IS-19910G
Service Bulletin Details
Public Details for: IS-19910G
Revision : mention added stating to disable prime.
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Instruction Sheet IS-19910G ELECTRIC FAN DRIVE COOLING SYSTEM CONVERSION WITH DELCO REMY ALTERNATOR H3 coaches (2PCH…) US10 to GHG17 incl. (B-1721 to J-0184) REVISION : G Jan 24, 2020 THIS DOCUMENT SUPERSEDES PREVIOUS VERSION. Mention added stating to disable “Prime” IMPORTANT NOTE VEHICLES EQUIPPED WITH OPTIONAL PRIME ENERGY MANAGEMENT SYSTEM TO PREVENT OVERLOADING THE L.H. SIDE ALTERNATOR, IT IS VERY IMPORTANT TO DISABLE « PRIME » SYSTEM ON VEHICLES RECEIVING THIS CONVERSION. PLEASE CONTACT YOUR NEAREST PREVOST SERVICE CENTER TO HAVE THE PRIME SYSTEM DISABLED. A SOFTWARE TOOL IS NEEDED TO DO SO. Recommended Alternator Conversion Kits Take note that you can install a Delco Remy 55SI 24V-250A alternator on the engine curbside using one of the following recommended installation kit: Kit: IS19913 Applicable to: H3 Series, US10 Kit: IS19908 Applicable to: H3 Series, from D-2364 up to J-0184 Writer: ELMATERIAL Kit IS19910 contains the following parts: Qty Part No. DESCRIPTION 050195 FAN SUPPORT PANEL A1 1 050200 UPPER SHROUD TRANSITION A6 1 050201 LEFT SHROUD TRANSITION A7 1 050202 RIGHT SHROUD TRANSITION A8 1 050203 LOWER SHROUD TRANSITION A9 1 050204 UPPER LEFT SHROUD PANEL H3 US10+ A11 1 050229 ELECTRICAL CONNECTOR COVER A15 1 050206 UPPER RIGHT SHROUD PANEL H3 US10+ A12 1 050213 LOWER SHROUD PANEL H3 US10+ A14 1 050208 LH SIDE SHROUD PANEL H3 US10+ A10 1 050255 RH SIDE SHROUD PANEL & WURTH BOX SUPPORT H3 US10+ A13 1 012349 IDLER PULLEY Mechanical 1 Writer: EL IS-19910G Page 3 / 76 012941 PULLEY, DRIVE Mechanical 1 010090 L.H. ENGINE MOUNT Mechanical 1 011213 SUPPORT, IDLER + TENSIONER 069893 PULLEY, DELCO REMY ALTERNATOR 10PK 69 DOB Mechanical 1 453076 CAP, DUST Mechanical 1 506067 1x BELT 10PK1703 ARAMIDE 1x BELT 10PK1703 ARAMIDE (for your spare kit) Mechanical 2 510991 TENSIONER, BELT Mechanical 1 560720 DELCO REMY ALTERNATOR 55SI 24V-250A Mechanical 1 050286 CAC INLET PIPE H3 US10+ Pipe 1 050406 CAC OUTLET PIPE H3 US10+ Pipe 1 050414 RADIATOR INLET COOLANT PIPE H3 US10+ Pipe 1 050288 RADIATOR OUTLET PIPE H3 US10+ Pipe 1 EL Writer: Mechanical 1 IS-19910G Page 4 / 76 Fitting 1 Fitting 1 Fitting 1 Fitting 1 HOSE 3/8 ID X 61'' LONG hose 1 HOSE, FLEXIBLE - CHARGE AIR Hose 1 Hose 1 Hose 1 Hose 1 Hose 1 Hose 3 501027 FITTING, SAE 45º #4FL-Mx1/4NPT-M BR 501308 ADAPTER / PIPE FITTING / 1/4NPT-Fx1/4NPT-M BR 501329 ELBOW 45º / PIPE FITTING / 1/4NPT-Mx1/4NPT-F BR 501332 ELBOW 90º / PIPE FITTING / 1/4NPT-Mx1/4NPT-F BR 052366 030096 Location: engine intake 550095 HOSE, FLEXIBLE - CHARGE AIR Location: turbo outlet 531469 HOSE, FLEXIBLE - CHARGE AIR Location: CAC outlet 531471 HOSE, FLEXIBLE - CHARGE AIR Location: CAC inlet 052889 HOSE, SILICONE 2 1/2" ID Location : coolant pipes 053617 HOSE, SILICONE Location : coolant pipes EL Writer: IS-19910G Page 5 / 76 21490616 CLAMPS, SPRING LOAD - CHARGE AIR Clamps 8 Clamps 4 Clamps 16 Clamps 4 Location: CAC outlet & inlet 21490630 CLAMP, SPRING LOAD - CHARGE AIR Location: turbo outlet & engine intake 992089 HOSE CLAMP CT CAILLAU 60mm-80mm Location : coolant pipes 992081 HOSE CLAMP CT CAILLAU 12-22 Location : coolant filter 21185073 MOUNT, ANTI-VIBRATION Support /bracket 1 050305 BRACKET, RADIATOR INLET PIPE Support /bracket 1 050265 COOLANT FILTER SUPPORT H3 Support /bracket 1 050303 ALTERNATOR TELLTALE BRACKET Support /bracket 1 050214 UPPER RADIATOR SUPPORT H3 Support /bracket 1 069890 LH LOWER ALTERNATEUR SUPPORT Support /bracket 1 EL Writer: IS-19910G Page 6 / 76 069891 LH UPPER ALTERNATEUR SUPPORT Support /bracket 1 069205 DECAL, WARNING Misc. 2 010111 DECAL, BELT Misc. 1 391028 INSERT, ALTERNATOR TELLTALE Misc. 1 506025 RUBBER EXTRUSION, BLACK Misc. 8 ft 380360 GROUND STUD Misc. 1 506040 TAPE, ADHESIVE AD1 EPDM CC GY 5/16"X3/4"X25' Misc. 1 562113 TELLTALE LIGHT MODULE Misc. 1 21937327 FILTER, COOLANT Misc. 1 012921 GROUND STUD Electrical 1 561610 CONNECTOR HOUSING, PED WEATHER-PACK 4 WIRES Electrical 1 561783 CAVITY PLUG, CONNECTOR Electrical 4 22722850 I/O-B MULTIPLEX MODULE Electrical 1 23499009-EFD MCM, PROGRAMMED Electrical 1 EL Writer: IS-19910G Page 7 / 76 563593 CONNECTOR, WITH END-OF-LINE 120 OHMS RESISTOR Electrical 2 563750 FUSE HOLDER, AMG TYPE Electrical 1 564520 FUSE, AMG 300A Electrical 1 564612 CIRCUIT BREAKER BOX, WURTH Electrical 1 565191 FAN, ELECTRIC Electrical 8 563533 HAND GUARD, FAN Electrical 8 23498721 FAN DRIVE POWER CABLE, 4600mm Harness 1 23524934 L.H. ALTERNATOR POWER CABLE – DELCO REMY Harness 1 23498450 MASTER RELAY TO 300A FUSE CABLE, 300mm Harness 1 23445869 MCM TO I/O-B INTERFACE HARNESS Harness 1 23488790 FAN TO RJB INTERFACE HARNESS H3 Harness 1 23490553 VEHICLE INTERFACE HARNESS Harness 1 068820 HARNESS, FAN DRIVE Harness 1 069246 GROUND CABLE, FAN DRIVE Harness 1 EL Writer: IS-19910G Page 8 / 76 0610037 CONTROL HARNESS, LEFT ALTERNATOR Harness 1 0610035 GROUND CABLE, LEFT ALTERNATOR Harness 1 N37749 TIE, NYLON, DOUBLE hardware 15 509491 TIE, NYLON LARGE EXTRA STRONG 250 LBS hardware 38 504016 TIE, NYLON BLACK (LARGE) hardware 58 504013 MOUNT, TIE HOLE 1/4" hardware 25 504751 MOUNT, TIE SWIVEL hardware 4 504750 MOUNT, TIE TREE hardware 1 509490 MOUNT, TIE DOUBLE GRAY hardware 15 562679 MOUNT, SQUARE SELF-ADHESIVE BLACK hardware 4 500411 WSH FL SS .260X.697X.05 (M6,1/4) hardware hardware 1 1 hardware 1 hardware 4 500449 WASHER, FLAT SS .687X1.5X0.078 (M16,5/8) 500482 WASHER, SPLIT LOCK Z050 .506X.873X.125 (M12,1/2) 500942 WASHER, SPLIT LOCK N500 8.1X14.8X2 (M8,5/16,#18) EL Writer: IS-19910G Page 9 / 76 502570 WASHER, SPLIT LOCK SS 6.1X11.8X1.6 (M6,#12) 502573 WASHER FL SS 6.4 X 12.0 X 1.6 (M6,1/4) 507657 5001137 WASHER, BANJO FITTING M14 WSH FL SS .203X.438X.06 (M5,#10) 5001341 WASHER, FLAT SS 8.4X17X1.6 (M8,5/16) 5001737 WASHER, SPLIT LOCK N500 10.2X18.1X2.2 (M10,3/8) 5001751 WASHER, FLAT N500 10.5X26X2 (M10,3/8) 5001833 WASHER, BELLEVILLE SPR SS 301 6.65X17.4X1.27(M6,1/4 5001868 WASHER, BELLEVILLE SS 8.4X18X2 (M8,5/16) 5001935 WASHER, FLAT SS 10.5X18X1.6 (M10,3/8) 5002008 WASHER, FLAT HARD N500 13X35X5 (M12,1/2) 500998 NUT HEX BR 1/2-13 502837 NUT HEXF STO N500 M8-1.25 502859 NUT HEX NYRT NX500 M10-1.5 G10 5001180 NUT HEX NYRT SS 10-24 5001182 NUT HEX NYRT SS M6-1 5001665 NUT HEX NYRT NX500 M22-2.5 5001761 NUT HEXF NYRT NX500 M12-1.75 G8 5001930 NUT HEXF NYRT NX500 M10-1.50 PC 10 5001983 500685 NUT HEX NYRT NSS M8-1.25 NUT HEX NYRT SS 5/16-18 500119 500658 SCREW, CAP HEX SS NSS M8X1.25X20 SCREW TC PAN PH Z050 10-24X3/4 502719 SCREW, CAP HEX SS NSS M10X20 G8.8 502686 SCREW, CAP HEX SS NSS M6X30 502804 SCREW, CAP HEX N500 M10-1.5X25 G8.8 502848 SCREW TC HEX F N500 1/4-20X3/ 5001296 5001308 SCREW, CAP HEXFN500 M12-1.75 X 80 CL10.9 PT SCR CAP HEXF N500 M10-1.5X40 G10.9 EL Writer: hardware 62 hardware 1 hardware 8 hardware hardware 2 7 hardware 4 hardware 10 hardware 32 hardware 4 hardware 1 hardware 1 hardware 1 hardware 2 hardware 4 hardware hardware 2 1 hardware 1 hardware 2 hardware 2 hardware 3 hardware 1 hardware hardware 4 11 1 hardware 33 hardware 8 hardware 22 hardware 6 hardware 4 hardware IS-19910G Page 10 / 76 hardware 3 hardware 62 hardware 4 hardware 2 hardware 1 hardware 4 hardware 2 SCR CAP HEXF N500 M10-1.5X120 G10.9 hardware 504379 RIVET, POP DOME SS OE 3/16X1/4 hardware 4 41 504610 RIVET MGL PRDG SS 1/4X5/8 hardware 14 IS-19910 INSTRUCTION SHEET 5001643 SCREW, CAP HEXF G500 M8-1.25X25 G8.8 PT 5001697 SCREW, CAP HEX SS NSS M6X16 5001738 SCREW, CAP HEX N500 M8X30 G8.8 FT 5001745 SCREW, CAP HEX N500 M8-1.25X25 G8.8 5001786 SCREW, CAP HEXF AD N500 M12-1.75X30 G8.8 5001799 SCREW, CAP HEXF N500 M10-1.5 X 70 G10.9 5001940 SCREW CAP HEX N500 M12X1.75X140 5002091 1 Other parts or products that may be required: Part No. DESCRIPTION 680459 Loctite 404, INSTANT ADHESIVE 9.3gr 680098 LOCTITE 567 THREAD SEALANT 250ML 680038 LOCTITE 243, BLUE THREADLOCKER 50ML NOTE Material can be obtained through regular channels. EL Writer: IS-19910G Page 11 / 76 PROCEDURE DANGER Park vehicle safely, apply parking brake, stop engine. Prior to working on the vehicle, set the ignition switch to the OFF position and trip the main circuit breakers equipped with a trip button. EL Writer: IS-19910G Page 12 / 76 ELECTRICAL CABLES & HARNESSES DIAGRAM EL Writer: IS-19910G Page 13 / 76 HOSE CLAMP TORQUE (coolant lines and charge air cooler) HOSE CLAMPS No DESCRIPTION 1 (Ø 2 ½ ” or lower) 2 (Ø 4 ¼ ”) EL TORQUE Constant-Torque hose clamps - coolant lines 90-100 lbf-in Oetiker hose clamps – Green spring - coolant lines 12-18 lbf-in Oetiker hose clamps – unpainted spring - coolant lines 8-9 lbf-in Caillau hose clamps - coolant lines 30 lbf-in Constant-Torque hose clamps 4.25in - charge air cooler (CAC) Writer: 4.5-5.5 lbf-ft IS-19910G Page 14 / 76 EL Writer: 1. In the main power compartment, place the battery master switch to the OFF position. Trip all the main breakers that have a manual trip (CB2, CB4, CB6, lever or button etc…depending on the year model). 2. Remove L.H. side rear fender. FIGURE 1 Drain the cooling system 3. Connect the coolant extractor. Use the coolant extractor to drain the coolant from the engine. An alternate method is to drain the coolant into a suitable container using the drain hose. FIGURE 2 Writer: EL IS-19910G Page 16 / 76 4. Unfasten cap screws and remove access panel located behind tag axle L.H. side wheel. FIGURE 3 5. Open radiator door to access radiator assembly. Unfasten upper arm assembly. FIGURE 4 6. Remove radiator sealing frame. FIGURE 5 EL Writer: IS-19910G Page 17 / 76 7. Remove clamps and then break hoses from the front coolant and charge air pipes. FIGURE 6 8. Remove rear coolant and charge air hose clamps then break hoses loose. FIGURE 7 9. Remove the upper radiator assembly support bracket. Keep the three small (3) rectangular plates for reuse FIGURE 8 EL Writer: IS-19910G Page 18 / 76 10. Remove the lower radiator assembly protector tube. FIGURE 9 11. Disconnect the radiator vent hose on top of the radiator. 12. Cut the cable tie and disconnect electrical connector from the fan clutch. The remaining connector on the chassis cable will be capped and left in place. 13. Remove fan drive shaft fasteners at the fan clutch. FIGURE 10 EL Writer: IS-19910G Page 19 / 76 14. Open the secondary lock of connector #561610. Insert a cavity plug #561783 in each of the four (4) cavities with the smallest end protruding as shown on the example at right. Close the secondary lock. 15. Cap the chassis fan clutch cable with this connector. Secure the connector on the inner wall above the radiator using: • • 1x tree mount #504750 1x nylon tie #504016 FIGURE 11 FIGURE 12 FIGURE 13 16. Remove the fan drive casting. FIGURE 14 EL Writer: IS-19910G Page 20 / 76 17. Unscrew all lower radiator assembly mounting fasteners (2 bolts on R.H. side, 2 bolts on L.H. side). FIGURE 15 18. Position a forklift under the radiator assembly that is capable of safely lifting the radiator. With assistance, slide radiator assembly out and onto the forklift. Transfer radiator assembly to a secure location. FIGURE 16 EL Writer: IS-19910G Page 21 / 76 19. Remove the tripod from the radiator/CAC assembly. FIGURE 17 FIGURE 18 20. Remove the fan shroud. FIGURE 19 EL Writer: IS-19910G Page 22 / 76 21. The new cooling pack arrangement requires being located four inches closer to the engine to give the needed clearance for the electric fans. For this reason, rotate both the radiator/CAC assembly mounting supports 180° and reinstall. BEFORE FIGURE 20: MOUNTING SUPPORT IN INITIAL POSITION AFTER FIGURE 21: MOUNTING SUPPORT AFTER 180° ROTATION 22. Remove the rear bumper (undo three nuts and one attachment plate each side). FIGURE 22 EL Writer: IS-19910G Page 23 / 76 23. On the engine hot side, remove the following pipes: • • radiator inlet & outlet pipes CAC inlet and outlet pipes Keep the hose clamps, the flexible hoses for later reuse Keep the fittings found on the pump inlet pipe for later reuse FIGURE 23 FIGURE 24 24. Remove all the drive belts mounted on the crank pulley. FIGURE 25 EL Writer: IS-19910G Page 24 / 76 25. Remove the drive pulley. Discard the 6 bolts. FIGURE 26 26. Remove the rust, clean and prepare the surface on the vibration damper as shown. Make a smooth surface for the pulley that will be reinstalled later on. FIGURE 27 FIGURE 28 EL Writer: IS-19910G Page 25 / 76 27. Properly support the engine as one of the engine support will be interchanged. FIGURE 29 28. Remove the two (2) coolant hoses shown on the image. Keep the two (2) banjo fittings for later use. BANJO FITTING FIGURE 30 29. Remove the L.H. rear engine support on which the coolant filter is installed (10 bolts). Keep the hardware for reuse. Take note that the water pump belt idler/tensioner assemble will be reused as is. Do not take apart tensioner or idler. FIGURE 31: L.H. REAR ENGINE SUPPORT EL Writer: IS-19910G Page 26 / 76 30. Cut the engine cradle rail as shown to increase the clearance between the cradle and the alternator. Carefully work the edge to achieve a smooth finish and contour. Wear appropriate equipment. personal protection Protect engine and area with blankets. Blow area clean when completed. Apply paint to protect the bare metal FIGURE 32 31. Remove the water pump idler/tensioner assembly from the former engine mount. To do so, unscrew three (3) bolts at the back of the engine mount. FIGURE 33 EL Writer: IS-19910G Page 27 / 76 32. Reinstall the idler/tensioner assembly as a unit on the new L.H. engine mount #010090. Mount the idler/tensioner assembly using three (3) cap screws #5001643 Tighten to 14-17 lb-ft FIGURE 34 FIGURE 35 EL Writer: IS-19910G Page 28 / 76 33. Install the new engine mount #10090 using seven (7) M14 screws saved from the former engine support with the exception of: • Ground stud #012921 (1x) and nylon insert NYRT nut #5001665 (1X) • • Isolator cap screw #5001940 (2X) Nut #5001761 (2X) FIGURE 36 Seven (7) mounting screws torque : 90-94 lb-ft (128 Nm) FIGURE 37 Tighten ground stud to 94 lb-ft Tighten stud nut to 94 lb-ft EL Writer: IS-19910G Page 29 / 76 FIGURE 38 Tighten isolator screws to 60 lb-ft 34. Install the new crank pulley using six new bolts #5001296. Use blue Loctite on the bolt threads. Torque to 26 lb-ft in the numerical order 1, 2, 3, 4, 5, 6, 1 Once done perform a final tightening to the value of 66 lbf-ft. FIGURE 39 35. Reinstall the water pump drive belt. FIGURE 40: WATER PUMP DRIVEBELT 36. Reinstall the AC compressor drive belts. 37. Install alternator #069891. brackets #069890 and Note: Install the upper bracket #069891 with short end towards bumper and long end towards turbo. Use: 4x cap screws #5001308 Apply blue Loctite Tighten to 48 lb-ft FIGURE 41 EL Writer: IS-19910G Page 30 / 76 38. Installing the LH alternator pulley. Place #560720 alternator flat on a bench with the shaft horizontal. Required tools: • • 15-16” crowfoot adapter 8mm hex bit Clean shaft and pulley with brake cleaner. Slide pulley #069893 on shaft by hand. Hand thread nut on shaft until snug. Using thin wall15/16”adapter and 8mm hex bit to block shaft rotation, tighten to 70-80 lbf-ft. Never use power tools to install pulley and nut. FIGURE 42 Note: Do not apply any pressure to end of the shaft. Internal damage may occur if the shaft is pushed back and turned. 39. Install alternator on support with four (4) #5002091 M10x120 screws. Apply blue Loctite Tighten to 48 lb-ft FIGURE 43 40. Install the idler support #011213 using: 3x screws #5001799 Tighten to 48 lb-ft FIGURE 44 EL Writer: IS-19910G Page 31 / 76 41. Install the new idler #012349 with screw #5001786 and washer #5002008. Tighten to 59 lb-ft FIGURE 45 42. Install the dust cap #453076. FIGURE 46 FIGURE 47 EL Writer: IS-19910G Page 32 / 76 43. Install the new alternator tensioner #510991. Secure with one screw #5001799 on which blue Loctite is applied. FIGURE 48: Tensioner mounting screw torque : 48 lb-ft 44. Install belt #506067. To do so, rotate the automatic belt tensioner using a ½ square drive breaker bar. FIGURE 49 45. Remove former belt routing decal and replace with decal #010111. FIGURE 50 EL Writer: IS-19910G Page 33 / 76 46. Install control harness #0610037 on alternator. Connect circuit I to Indicator (I) post. Connect circuit S to Sense (S) post. Use the following hardware: • • 2x nylon lock nut #5001180 2x washer #5001137 Tighten to the following torque values: Sense (S): 25-45 lb-in Indicator (I): 25-45 lb-in Apply Color Guard Rubber Coating on the connections. FIGURE 51 FIGURE 52 47. Perform the “Multiplex Modules Disconnection Procedure Prior to Welding” found in your vehicle Maintenance Manual, Section 00: General. 48. Weld the new coolant filter support #050265 on the engine cradle. 23 ½ inches from the end of the cradle FIGURE 53 EL Writer: IS-19910G Page 34 / 76 FIGURE 54 FIGURE 55 FIGURE 56 EL Writer: IS-19910G Page 35 / 76 49. As a preparation to welding, buff the paint to reach bare metal. Weld the ground stud #380360 centered in the beam and at 14 inches from the beam end. FIGURE 57 FIGURE 58: GROUND STUD #380360 50. Apply black paint to the area surrounding the ground stud and also on the ground stud circular base. DO NOT apply paint on the electrical contact surfaces. FIGURE 59: GROUND STUD #380360 51. Install a tie mount #504013 with one screw #502686 at the back of the L.H. engine mount. FIGURE 60 EL Writer: IS-19910G Page 36 / 76 52. Install the alternator ground cable #0610035. Use the ground screw and lock washer supplied with alternator with the addition of a flat washer #500411. torque: 50-60 lbf-in 53. Secure the alternator ground cable to the previously installed tie mount using one (1) nylon tie #509491. FIGURE 61 FIGURE 62 54. Secure the alternator ground cable to the previously installed ground stud on the L.H. engine mount. Use screw #502719 & washer #5001935 Tighten to 20 lbf-ft Protection against corrosion. Apply Color Guard rubber coating on the ground stud once the ground cable is hooked up. FIGURE 63 55. To the previously installed coolant filter support, install the filter holder recovered from the former installation. FIGURE 64 56. Install the new coolant filter onto the filter holder. Check the clearance between the filter and the close hose clamps of the coolant pipe leading to the transmission oil cooler. EL Writer: IS-19910G Page 37 / 76 57. Transfer the drain plug and the coolant extractor quick connect fitting saved from the old pump inlet pipe. Apply Loctite 567 Thread installation of the fittings Sealant prior 58. Install the new radiator outlet pipe #050288. Reinstall with the flexible hose #053617 and the four (4) hose clamps #992089. Use steel wire to hold the end of the pipe until the radiator is installed if required. A: # 992089 hose clamp (4x)torque: 30 lbf-in FIGURE 65 B: drain plug C: coolant extractor quick connect valve D: # 053617 silicone hose 59. Reinstall the elbow between the copper heater line and the new radiator outlet pipe. For proper clamp torque, refer to HOSE CLAMP TORQUE on page 12. FIGURE 66 60. Using blue flexible hose #052366, prepare two new short hoses for the coolant filter. a) Cut two sections of blue flexible hose, one 22 inches long and a second 38 inches long. A : hose clamp #992081 (4x) B: banjo fitting copper washer #507657 (6x) FIGURE 67 b) Use the banjo fittings recovered from the previous installation. hose clamp torque: 30 lbf-in FIGURE 68 EL Writer: IS-19910G Page 38 / 76 61. Install the 22” long and 38” long hoses prepared at the previous step as shown on the images. FIGURE 69 FIGURE 70 62. Connect the DEF injector coolant line return hose to the radiator outlet pipe. Use two (2) new banjo fitting copper washer #507657 FIGURE 71: DEF INJECTOR COOLANT LINE RETURN HOSE EL Writer: IS-19910G Page 39 / 76 63. Connect the coolant line coming from the surge tank to the radiator outlet pipe. TORQUES: Constant-Torque with spring washers clamps : 90-100 lbf-in Oetiker clamps – green spring : 12-18 lbf-in FIGURE 72 Oetiker clamps – unpainted spring : 8-9 lbf-in Caillau clamps : 30 lbf-in 64. Secure the coolant hoses together using nylon ties. A : handcuff nylon tie #N37749 (3x) FIGURE 73 FIGURE 74 EL Writer: IS-19910G Page 40 / 76 65. Secure the coolant hose near the engine block «push-lok» fitting as shown. B : nylon tie #504016 (1x) FIGURE 75 EL Writer: IS-19910G Page 41 / 76 66. Hook up the “L.H. alternator power cable” #234524934 to the alternator positive (+) post. Place the flash washer between the cable lug and the nut. 1x nut #500685 torque: 80-125 lbf-in 1x flat washer #5001341 Apply Color Guard rubber coating at the alternator ground ( ) and positive (+) connections. IMPORTANT NOTE FIGURE 76 Early alternators are provided with a shorter positive stud. With the short stud, nut #500685 does not thread fully to allow the locking nylon insert to grip on the threads. In this case, DO NOT use nut #500685. Use the nut and lock washer provided with the alternator instead. Tighten to: 80-125 lb-po (9.0-14.0 N-m). FIGURE 77: EL Writer: - NUT #500685 DOES NOT THREAD FULLY TO ALLOW THE LOCKING NYLON INSERT TO GRIP ON THE THREADS (UPPER IMAGE) - HARDWARE TO USE WITH SHORT STUD (LOWER IMAGE) IS-19910G Page 42 / 76 67. Connect the “fan drive ground cable” #069246 to the ground stud previously welded to the chassis. A: split lock washer #500482 B: brass nut #500998 C: fan drive ground cable #069246 FIGURE 78 FIGURE 79 68. Apply Color Guard rubber coating on the ground stud connection. FIGURE 80: GROUND STUD WITH RUBBER COATING EL Writer: IS-19910G Page 43 / 76 69. Install a tie mount #509490 at the location shown on the picture. Secure the tie mount with a rivet. A: tie mount #509490 B: rivet #504610 (hole diameter: Ø 17/64) C: nylon tie #509491 D: fan drive power cable #23498721 FIGURE 81 70. Secure the “fan drive power cable” #23498721 onto the tie mount using a nylon tie. Make sure to leave 26 inches long from the tie mount up to the end of the “fan drive power cable” red connector. FIGURE 82 FIGURE 83 FIGURE 84 71. Install six (6) tie mounts to secure the “fan drive power cable” and the “L.H. alternator power cable” as shown on the picture. EL Writer: IS-19910G Page 44 / 76 FIGURE 85 A: tie mount #509490 B: rivet #504610 C: nylon tie #509491 FIGURE 86 72. Route the “fan drive power cable” and the “L.H. alternator power cable” up to the main power compartment. Refer to the pictures at right as a guide for the installation. 73. Secure both cables using seven (5) tie mounts #509490 fixed with seven (5) rivets #504610 (hole diameter: Ø 17/64). Secure the cables on the tie mounts as previously done with fourteen (10) nylon ties # 509491. A: tie mount #509490 B: rivet #504610 (hole diameter: Ø 17/64) C: nylon tie #509491 EL Writer: FIGURE 87 IS-19910G Page 45 / 76 FIGURE 88 EL Writer: IS-19910G Page 46 / 76 74. INSTALLATION OF THE “FAN TO RJB INTERFACE” HARNESS #23488790 a) Route the “fan to RJB interface” harness #23488790 up to the main power compartment. Secure this harness to the fan drive power cable using nylon ties #504016. b) This harness will be connected close to the fan drive power cable, thus it also requires 26 inches of free length. FIGURE 89 A: FAN TO RJB INTERFACE” HARNESS #23488790 B: FAN DRIVE POWER CABLE C: NYLON TIES #504016 (23x approx.) FIGURE 90 FIGURE 91 FIGURE 92 EL Writer: IS-19910G Page 47 / 76 75. Connect the new CAC outlet pipe #050406 to the engine intake elbow. NOTE: in case of interference between this pipe and the ping tank, rotate the ping tank. A: #030096 hose (1x) B: #21490630 spring loaded clamp (2X) (torque: 5 lbf-ft) FIGURE 93 FIGURE 94: CONNECTION AT THE ENGINE INTAKE ELBOW FIGURE 95 EL Writer: IS-19910G Page 48 / 76 76. If your vehicle is equipped with AFSS (Automatic Fire Suppression System), the new CAC outlet pipe #050406 is likely to come into interference with a AFSS extinguishing agent hose (see image) near the end of the pipe that connects with the Charge Air Cooler. If this is the case, move the hose the other side of the bracket shown, to prevent rubbing between the hose and the CAC outlet pipe. FIGURE 96 77. On the diagonal member, change the existing radiator inlet pipe bracket for the new one #050305. Use the existing hardware. FIGURE 97 78. Install the new radiator inlet pipe #050414. A: #052889 silicone hose B: # 992089 hose clamp (4x), torque: 30 lbf-in FIGURE 98 EL Writer: IS-19910G Page 49 / 76 79. Install the new CAC inlet pipe #050286. Use one new #550095 CAC flexible hose. Secure the hose using two (2) spring loaded clamps #21490630. A: #550095 hose B: #21490630 spring loaded clamp (2X), torque: 5 lbf-ft FIGURE 99: CONNECTION AT THE TURBO OUTLET ELBOW 80. Reinstall the cooling pack. FIGURE 100 81. Secure the cooling pack base with the following parts: A: 4x screw #502804 B: 8x washer #5001751 C: 4x nut #502859 FIGURE 101 EL Writer: IS-19910G Page 50 / 76 82. In case of interference between the charge air cooler and the DPF inlet pipe, loosen the pipe’s V-band clamps. Move the pipe in order to increase the clearance, then hold the pipe in place and tighten the V-band clamps. FIGURE 102 FIGURE 103 83. Using parts #501332, #501308, #501329, #501027, mount the brass fitting assembly shown on the image at right. Apply Loctite 567 Thread Sealant on the threads A: #501027 B: #501329 C: #501308 D: #501332 FIGURE 104: BRASS FITTING ASSEMBLY 84. Remove the vent hose fitting found on the radiator. FIGURE 105 EL Writer: IS-19910G Page 51 / 76 85. Install the brass fitting assembly in place of the former vent hose fitting and then connect the radiator vent hose to the radiator. 86. Prepare the cooling pack upper attachment with the three (3) rectangular plates (see image) recovered from the former installation and the following parts: A: anti-vibration mount #21185073 B: upper radiator support #050214 C: 2x screw #5001738 , 2x nut #502837 D: 2x screw #5001738 , 2x washer #500942 E: 2x screw #5001745 , 2x washer #500942 FIGURE 106 One end of the upper attachment is mounted on the radiator frame (image at right) FIGURE 107 Bolt the anti-vibration mount onto the vehicle chassis FIGURE 108 EL Writer: IS-19910G Page 52 / 76 87. Reinstall all the blue flexible hoses at the CAC and radiator (at the lower connections of the cooling pack). Install with the following parts: A: #21490616 clamp (4x) (torque: 5 lbf-ft) B: #531471 flexible hose C: #053617 silicone hose D: #992089 (4x) FIGURE 109 88. Reinstall all the blue flexible hoses at the CAC and radiator (at the upper connections of the cooling pack). Use the following parts:: A: 1x flex hose #531469 B: 1x silicone hose #053617 C: 4x clamp #21490616 (torque: 5 lbf-ft) D: 4x clamp #992089 FIGURE 110 For proper clamp torque, refer to HOSE CLAMP TORQUE on page 12 89. Reinstall the lower cooling pack protector tube with the following hardware: 4x Screw #502804 4x split lock washer #5001737 FIGURE 111 EL Writer: IS-19910G Page 53 / 76 90. Install the sealing element #050200. Screw it on the existing threaded holes on the upper part of the radiator. Secure with the following hardware: 6x bolt #5001697 6x lock washer #502570 FIGURE 112 FIGURE 113 91. Install the sealing element #050203. Screw it on the existing threaded holes on the bottom of the radiator. Secure with the following hardware: 6x bolt #5001697 6x lock washer #502570 FIGURE 114 92. Prepare the sealing elements #050201 and #050202. On both parts, apply foam tape #506040 on the edges as shown on the image. FIGURE 115 EL Writer: IS-19910G Page 54 / 76 93. Install the sealing elements #050201 and #050202. Screw them onto the upper and lower sealing elements installed at the previous steps. Secure with the following hardware: 8x bolt #5001697 8x lock washer #502570 A: #050201 B: #050202 FIGURE 116 94. Cut two pieces of 39 inches (990 mm) long of rubber extrusion #506025. 95. Using good industrial glue (Loctite 404 or similar product), glue the two pieces of rubber extrusion centered on the reinforcement angles of fan support panel #050195. FIGURE 117 FIGURE 118 EL Writer: IS-19910G Page 55 / 76 96. Install the fan support panel #050195. Secure with the following hardware: 19x bolt #5001697 19x lock washer #502570 FIGURE 119 97. Install the upper left #050204 and upper right #050206 sealing elements. Secure with the following hardware: 6x bolt #5001697 6x lock washer #502570 FIGURE 120 98. Install the lower sealing element #050213. Secure with the following hardware: 5x bolt #5001697 5x lock washer #502570 FIGURE 121 99. Install the L.H. side sealing element #050208. Secure with the following hardware: 4 bolts #5001697 4 lock washers #502570 FIGURE 122 EL Writer: IS-19910G Page 56 / 76 100. Install the R.H. side sealing element #050255. Secure with the following hardware: 4x bolt #5001697 4x lock washer #502570 FIGURE 123 101. With a paint marker, identify the fans from 1 to 8 with the corresponding number found on a label on their respective blue connector. 102. Install the fans and fan hand guards on the panel in the same arrangement shown on the image. Be sure to place the fan so that the cable is at the proper location, 3 O’clock, 6 O’clock or 12 O’clock. Refer to the image at right. FAN HAND GUARD FIGURE 124 Install with the following hardware: 32x bolts #502686 32x lock washers #5001833 Prescribed torque:30 lbf-in EL Writer: IS-19910G Page 57 / 76 103. Snap the fan blue connector in the holes punches on the panel for that matter. FIGURE 125 104. Route and secure the fan cables as shown on the images. Secure with the following parts: A= nylon tie mount #504013 + rivet #504379 + nylon tie #504016 B= nylon tie #504016 Do not tighten the nylon ties at this moment FIGURE 126 EL Writer: IS-19910G Page 58 / 76 FIGURE 127 105. Install the circuit breaker box #564512. Install with the following hardware: 4x bolt #500119 4x lock washer #5001868 FIGURE 128 A: 2x bolt #500119 + 2x lock washer #5001868 FIGURE 129 A: 2x bolt #500119 + 2x lock washer #5001868 EL Writer: IS-19910G Page 59 / 76 106. Connect each fan to the corresponding connection port on the circuit breaker box. FIGURE 130 107. Tighten the nylon ties previously installed while routing the fan cables. 108. Use two (2) additional nylon ties #504016 to secure the extra-length of cables together close to the circuit breaker box as shown on the image at right. FIGURE 131 EL Writer: IS-19910G Page 60 / 76 109. Install the electrical connector cover # 050229. Fasten with the following hardware: 4x bolt #5001697 4x lock washer #502570 110. Using good industrial glue (Loctite 404 or similar product), glue three (3) pieces of rubber extrusion #506025 as shown on the connector cover. FIGURE 132 FIGURE 133 111. Complete the installation of the sealing elements. Screw the panels to the chassis threaded holes where shown on the image. Use the following hardware: 22x bolt #502848 FIGURE 134 EL Writer: IS-19910G Page 61 / 76 112. Complete the connection of the cables and harness to the fan circuit breakers box (three connectors: gray, black, red). A: fan drive ground cable (black connector) B: fan drive power cable (red connector) C: “fan to RJB interface” harness (gray connector) FIGURE 135 113. Secure the fan drive ground cable and the fan drive power cable connected to the fan drive circuit breakers box as shown on the pictures. A: rivet #504379 (6x) (hole diameter: Ø 13/64) B:tie mount #504013 (6x) C:nylon tie #504016 (6x) D: handcuff nylon tie #N37749 (1x) FIGURE 136 FIGURE 137 EL Writer: IS-19910G Page 62 / 76 114. Connect the alternator control harness connector C-ALT3 to connector C-ALT3 of the “fan to RJB interface” harness. Secure the extra length of harness as shown with nylon ties. A: handcuff nylon tie #N37749 (3x) B:nylon tie #504016 (4x) FIGURE 138 FIGURE 139 INSTALLATION OF ELECTRIC COMPONENTS AND HARNESS CONNECTIONS IN THE MAIN POWER COMPARTMENT EL Writer: IS-19910G Page 63 / 76 SCHEMATIC DIAGRAM OF ELECTRICAL CABLES & HARNESSES EL Writer: IS-19910G Page 64 / 76 115. In the battery compartment, disconnect the battery ground cable from the chassis ground stud. 116. Most of the electric components will be installed on the bulkhead at the right of master relay R1 (when facing it). Identify the master relay R1 on the image at right. FIGURE 140 117. If the situation applies to the vehicle on which you are working on, remove the two (2) useless studs found on the bulkhead and then sand to leave a smooth surface. FIGURE 141 EL Writer: IS-19910G Page 65 / 76 FIGURE 142 118. Make sure this is no voltage at the master relay R1 posts and then, remove the master relay R1 cover. FIGURE 143 119. Disconnect the four (4) cable lugs connected to the master relay R1 upper post. 120. Momentarily, connect the elbowed lug of the “master relay R1 to 300A fuse” cable #23498450. FIGURE 144 121. Find the best location where to install the fuse holder #563750 on the bulkhead. Take note that the fuse holder must be installed at the distance that allows cable #23498450 to reach it. 122. Drill two 11/64 pilot holes for the installation of the fuse holder on the main power compartment bulkhead. Secure with the following hardware: A: tapping screws #500658 (2x) + flat washer #5001341 (2x) FIGURE 145 EL Writer: IS-19910G Page 66 / 76 123. Reinstall the four (4) other cable lugs to the master relay R1 upper post. Being the largest lug at R1, the cable #23498450 lug should be placed first on the post (behind all the other lugs) (or second if rubbing is likely to happen). Master relay R1- Port 30 – M10-1.5 stud nut torque: 160-195 lb-in (18-22 Nm) FIGURE 146: ON THIS PICTURE, CABLE #23498450 LUG IS IN SECOND (2ND) POSITION BECAUSE IT WAS LIKELY TO RUB ON THE HEAD OF ONE OF THE FOUR SCREWS. 124. Reinstall the master relay R1 cover. FIGURE 147 125. Place the 300A fuse #564520 in the fuse holder underneath the cable lugs. 126. Connect to the free post of the fuse holder the two (2) following cables that are routed from the alternator and the fan drive circuit breakers box: • • Fan drive power cable #23498721 L.H. alternator power cable #23524934 A: nut #5001983 (2x) B: washer #5001341 (2x) Thread the nuts and tighten to a torque of 96 lbf-in (11Nm). EL Writer: FIGURE 148: TAKE NOTE THAT THE 300A FUSE IS NOT PRESENT ON THE PICTURE ABOVE BUT IT SHOULD BE INSTALLED AT THIS STEP IS-19910G Page 67 / 76 127. Secure the “fan drive power” cable and the “L.H. alternator power” cable as shown on the pictures at right using the following parts: A: tie mount #509490 (2x) B: rivet #504610 (2x) (hole diameter: Ø 17/64) C:nylon tie #509491 (3x) FIGURE 149 FIGURE 150 128. Install the MCM #23499009-EFD and the I/OB module #22722850 on the bulkhead. • • Spacing between the I/O-B and the MCM=1 inch Pilot holes diameter: 11/64” Install with the following hardware: Tapping screws #500658, 3x for the MCM 4x for the I/O-B module FIGURE 151: MAIN POWER COMPARTMENT EL Writer: IS-19910G Page 68 / 76 129. Depending on the coach configuration, an existing mounting plate may extend where the MCM should be installed and cause interference. If this mounting plate useless, cut it off along the red line shown on the image. IMPORTANT: Do not leave a sharp edge. Smooth down the edge. FIGURE 152 130. In the main power compartment, connect the “fan to RJB interface harness” to the “MCM to I/O-B interface harness” #23445869 by means of connector C-EFD1. 131. Connect the MCM and the I/O-B module together using the “MCM to I/O-B interface harness” #23445869. 132. Connect the OEL resistors connector RES1F and RES2F (part #563593) to the “MCM to I/O-B interface harness”. See the image at right and the following pictures for reference. FIGURE 153 EL Writer: IS-19910G Page 69 / 76 FIGURE 154 A:nylon tie #504016 (3x) FIGURE 155 A:nylon tie #504016 (2x) FIGURE 156 A:nylon tie #504016 (3x) B:nylon tie #509491 (2x) C:swivel mount #504751 (1x) EL Writer: FIGURE 157 B:nylon tie #509491 (2x) C:swivel mount #504751 (1x) IS-19910G Page 70 / 76 133. In the main power compartment, connect the “vehicle interface harness” #23490553 to the “MCM to I/O-B interface harness” by means of connector C-EFD2. FIGURE 158 134. Connect circuit 24VI, 24VD & GND2 to post 1, 2 & 5 respectively of the junction block. FIGURE 159 135. Get the J1939 signal. To do so, locate connector C193 among the existing harnesses in the main power compartment. 136. Disconnect connector C193 and connect with C193FS and C193FP of the “vehicle interface harness” #23490553. FIGURE 160 EL Writer: IS-19910G Page 71 / 76 137. In the main power compartment, locate I/O-B module A52 (alternately named AE52). 138. At A52 (or AE52), remove existing circuit 291 and 292 from connector J1:1 (pin 1) and J1:2 (pin 2). 139. For each circuit, cut the terminal and put a heat shrinking sleeve at the end of the wire. Those circuits won’t be used anymore. 140. Insert circuit 291 and 292 of the “vehicle interface harness” #23490553 into connector J1 pin 1 and J1 pin 2 respectively. FIGURE 161 EL Writer: IS-19910G Page 72 / 76 141. On the bulkhead, install the alternator telltale bracket #050303. Fasten to the bulkhead using two (2) rivets #504379 (hole diameter: Ø 13/64). 142. Place the alternator telltale insert #391028 in the telltale light module #562113. 143. Connect the appropriate branch of the “fan to RJB interface harness” to the telltale light module. FIGURE 162 FIGURE 163 FIGURE 164 144. There are remaining nylon ties and tie mounts in the kit. Use them to secure the harnesses and cables that may seem loose. The goal is to prevent rubbing of the cables and harnesses. FIGURE 165 EL Writer: IS-19910G Page 73 / 76 145. Install one (1) warning decal #069205 as shown on the image. FIGURE 166 146. Install a second warning decal #069205 as shown on the radiator door. FIGURE 167 147. Fasten the assembly. radiator door upper arm FIGURE 168 EL Writer: IS-19910G Page 74 / 76 148. Refill the cooling system. Connect coolant extractor. Use coolant extractor to refill the coolant from the engine. FIGURE 169 149. Reinstall the rear bumper. FIGURE 170 150. Reinstall the access panel located behind tag axle L.H. side wheel. FIGURE 171 EL Writer: IS-19910G Page 75 / 76 151. Reinstall L.H. side rear fender. FIGURE 172 152. In the battery compartment, connect the battery ground cable to the chassis ground stud. FIGURE 173 153. In the main power compartment, set the battery master switch to the ON position. 154. Set the ignition switch to the ON position. 155. In the main power compartment, reset the circuit breakers and wait two (2) minutes for the new installer I/O-B module to be programed. IMPORTANT NOTE VEHICLES EQUIPPED WITH OPTIONAL PRIME ENERGY MANAGEMENT SYSTEM TO PREVENT OVERLOADING THE L.H. SIDE ALTERNATOR, IT IS VERY IMPORTANT TO DISABLE « PRIME » SYSTEM ON VEHICLES RECEIVING THIS CONVERSION. PLEASE CONTACT YOUR NEAREST PREVOST SERVICE CENTER TO HAVE THE PRIME SYSTEM DISABLED. A SOFTWARE TOOL IS NEEDED TO DO SO. EL Writer: IS-19910G Page 76 / 76 SYSTEM TEST 156. Start the engine to idle. 157. With the engine in idle (600 rpm), use the Diagnostics menu of the Driver Information Display to engage the fans in speed 1. Diagnostics > Vehicle Tests > Activate Radiator FAN Speed 1 The height (8) fans should run at 50% of the maximum speed. You need to evaluate the sound level and the power of the air stream to determine the speed. 158. Engage the fans in speed 2. Diagnostics > Vehicle Tests > Activate Radiator FAN Speed 2 The eight (8) fans should run at 75% of the maximum speed. 159. Set the engine to the fast idle, the fans should then engage at 100% of the maximum speed. 160. If the fans behave in accordance with the criterions of the previous steps, then they operate normally. PARTS / WASTE DISPOSAL Discard waste according to applicable environmental regulations (Municipal/State[Prov.]/ Federal) EL Writer: