04TS-43REV4

No.: 04 TS-43Rev4
February 2021
TO:
Service Locations
FROM:
Technical Support Development
SUBJECT:
Series 60® and Series 50® Camshaft Timing Specifications
ISSUE
Camshaft timing, valve lash, injector height, and Jake Brake® lash are all very important
specifications that must be followed closely in order to optimize the performance and service life
of any Detroit Diesel engine. We have assembled four charts that bring together essential and
current information for servicing the Series 60 and Series 50 diesel and gas engines. Most of
the models listed in the attached charts are on-highway applications, but there are a few listed
for off-highway. The attached camshaft timing charts should prove very helpful when servicing
these engines.
Note: If the valve cover option label is missing, illegible or incorrect you will need to check to
see what camshaft is in the engine. To determine the camshaft that is used in the engine check
the part number stamped on the rear face of the camshaft or use DDCSN to enter the engine
serial number. DDCSN will retrieve the model number which will provide the correct injector and
valve adjustments.
CONTACT INFORMATION
Please contact the Detroit Diesel Customer Support Center at 800-445-1980 or email
[email protected] if you have any questions.
Detroit Diesel 13400 Outer Drive, West / Detroit, Michigan 48239-4001
SERIES 60 DIESEL VALVE LASH, JAKE BRAKE LASH AND CAM TIMING SPECS
Model
Engine
Year
DDEC
WU
WU
Model
Digit 5
11.1
11.1
EDGM
14B07
88-89
90-93
Model
Digit 6
II
II
Block
SK
11.1
94-97
III
WK
11.1
94-97
III
EK
11.1
1998
IV
LK
11.1
1999
IV
GU
GU *
12.7
12.7
88-89
90-93
II
II
GK
12.7
94-97
III
GK
12.7
1998
III
PK, TK
12.7
1998
IV
MK, BK
12.7
1999
IV
MK, BK **
12.7
2000
IV
MK, BK
BK
MK
MK_E
MV_E
Daewoo
TK6K
Marine-TK
12.7
12.7
12.7
12.7
12.7
2000-02
2002
2002
2002-03
2004-06
IV
IV
IV
IV
V
12.7
2000-04
IV
12.7
Vary
IV
HK
14.0
1999
IV
HK
14.0
2000
IV
HK
HK_E
HV_E
HK62
HK62
HK62
Marine-HK
HG_E
14.0
14.0
14.0
14.0
14.0
14.0
14.0
14
2000-02
2002-03
2004-06
2000
2000-03
2004-06
Vary
2007
IV
IV
V
IV
IV
IV
IV
IV
Camshaft/Assembly Part
Number
Injector Height mm
(inches)
BMSI
EDTA 06M06
06X01B / Rear Cam Stamp
06X01B Model
8929484 / 485
78.2 (3.079)
8929484 / 485
78.2 (3.079)
23518717 / 718
78.8 (3.102)
23524899 / 900
23513563 / 562 25324897 / 898
78.8 (3.102)
23522199 / 200
81.0 (3.189)
23524903 / 904
23524654 / 655
81.0 (3.189)
23524913 / 914
8929472 / 473
78.2 (3.079)
23505194 / 195
78.2 (3.079)
23513565 / 564
78.8 (3.102)
23524905 / 906
23521680 / 681
80.3 (3.161)
23524907 / 908
23521680 / 681
80.3 (3.161)
23524907 / 908
23524291 / 292
81.0 (3.189)
23524911 / 912
23524291 / 292
81.0 (3.189)
23524911 / 912
23528308 / 309
82.1 (3.230)
23528308 / 309
82.1 (3.230)
23528605 / 606
82.1 (3.230)
23531130
82.1 (3.230)
23533694
***See Service Manual
23523982 / 983
80.3 (3.161)
23524917 / 918
23525525 / 526
81.0 (3.189)
23524291 / 292
81.0 (3.189)
23524911 / 912
23524291 / 292
81.0 (3.189)
23524911 / 912
23528308 / 309
82.1 (3.230)
23531130
82.1 (3.230)
23533694
***See Service Manual
23524911 / 912
81.0 (3.189)
23528308 / 309
82.1 (3.230)
23528308 / 309
82.1 (3.230)
23529007 / 008
81.0 (3.189)
23535545 / 153J
***See Service Manual
Intake Valve
Exhaust Valve
Lash mm
Lash mm (inches)
(inches)
Jake Brake Jake Brake Lash
Model
mm (inches)
Cam Timing Range
mm (inches)
a
a
BMSI
06X03
760A
760A
0.660 (0.026)
0.660 (0.026)
4.39-5.46 (0.173-0.215)
4.39-5.46 (0.173-0.215)
0.660 (0.026)
a
760A
0.660 (0.026)
4.95-6.53 (0.195-0.257)
0.660 (0.026)
a
760A
0.660 (0.026)
4.95-6.53 (0.195-0.257)
0.203 (0.008)
0.660 (0.026)
a
760B
0.584 (0.023)
5.46-6.71 (0.215-0.264)
0.203 (0.008)
0.660 (0.026)
a
760B
0.584 (0.023)
5.21-6.27 (0.205-0.247)
0.203 (0.008)
0.203 (0.008)
0.508 (0.020)
0.660 (0.026)
a
a
760A
765
0.660 (0.026)
0.660 (0.026)
4.39-5.46 (0.173-0.215)
4.39-5.46 (0.173-0.215)
0.203 (0.008)
0.660 (0.026)
a
765
0.660 (0.026)
4.95-6.53 (0.195-0.257)
0.203 (0.008)
0.660 (0.026)
a
765
0.660 (0.026)
5.36-6.76 (0.211-0.266)
0.203 (0.008)
0.660 (0.026)
a
765A
0.584 (0.023)
5.36-6.76 (0.211-0.266)
0.203 (0.008)
0.660 (0.026)
a
770
0.584 (0.023)
5.03-6.10 (0.198-0.240)
0.203 (0.008)
0.660 (0.026)
a
790
0.660 (0.026)
5.03-6.10 (0.198-0.240)
0.203 (0.008)
0.203 (0.008)
0.203 (0.008)
0.203 (0.008)
0.203 (0.008)
0.660 (0.026)
0.508 (0.020)
0.660 (0.026)
0.508 (0.020)
0.508 (0.020)
a
b
a
a
a
795
797A
797
797
797
0.813 (0.032)
0.508 (0.020)
0.508 (0.020)
0.508 (0.020)
0.508 (0.020)
6.527-7.594 (0.257-0.299)
6.527-7.594 (0.257-0.299)
5.893-6.960 (0.232-0.274)
6.452-7.214 (0.254-0.284)
6.655-7.214 (0.262-0.284)
0.203 (0.008)
0.660 (0.026)
a
797A
0.508 (0.020)
5.11-6.17 (0.201-0.243)
0.203 (0.008)
0.660 (0.026)
a
N/A
N/A
6.17-6.78 (0.243-0.267)
0.203 (0.008)
0.660 (0.026)
a
770
0.584 (0.023)
5.03-6.10 (0.198-0.240)
0.203 (0.008)
0.660 (0.026)
a
790A
0.660 (0.026)
5.03-6.10 (0.198-0.240)
0.203 (0.008)
0.203 (0.008)
0.203 (0.008)
0.203 (0.008)
0.203 (0.008)
0.203 (0.008)
0.203 (0.008)
0.203 (0.008)
0.660 (0.026)
0.508 (0.020)
0.508 (0.020)
0.660 (0.026)
0.660 (0.026)
0.508 (0.020)
0.660 (0.026)
0.508 (0.020)
a
a
a
a
a
a
a
a
795
797
797
790C
795
797A
N/A
797B
0.813 (0.032)
0.508 (0.020)
0.508 (0.020)
0.660 (0.026)
0.813 (0.032)
0.508 (0.020)
N/A
0.508 (0.020)
6.527-7.594 (0.257-0.299)
6.452-7.214 (0.254-0.284)
6.655-7.214 (0.262-0.284)
5.03-6.10 (0.198-0.240)
6.527-7.594 (0.257-0.299)
6.527-7.594 (0.257-0.299)
6.12-7.19 (0.241-0.283)
6.17-6.73 (0.243-0.265)
EDVL 06X03
EDVL 06X03
0.203 (0.008)
0.203 (0.008)
0.508 (0.020)
0.660 (0.026)
0.203 (0.008)
0.203 (0.008)
*GU40 is equipped with a Model 760A Jake Brake. Use 760A lash specs when servicing
**MK and BK models with 0712 Valve mech are equipped with a Model 770 Jake Brake. Use 770 lash specifications when servicing.
++ References: a[04TS43Rev3], b[06R2003113]
https://parts.jacobsvehiclesystems.com/files/support/docs-pdfs/24770_DDC_App_Guide.pdf
https://parts.jacobsvehiclesystems.com/files/support/docs-pdfs/797-797A-797B-Jacobs-Tune-Up-Kit-00-032159-Rev-C.pdf
The following is from the Series 60 Service Manual (6SE483).
*** Adjust the valves and N3 fuel injector settings as follows:
1. Disconnect starting power for engine.
2. Remove the engine valve rocker cover as outlined. Refer to "Removal and
Cleaning of One-piece Rocker Cover for Diesel Engines Only" for one-piece,
refer to "Removal and Cleaning of Two-piece Rocker Cover for Diesel Engines
Only" for two-piece rocker cover, and refer to "Removal and Cleaning of
Threepiece Rocker Cover" for three-piece rocker cover.
3. Insert a 3/4 in. drive breaker bar or ratchet into the square hole in the center of
the crankshaft pulley.
4. Bar the engine in the direction of rotation and observe a cylinder where the
injector rocker arm is just beginning to depress the injector plunger, both the
intake and exhaust valves should be closed.
a. Stop turning the engine and mount a magnetic base dial indicator so you
can monitor the upward lift of travel of that injector lobe.
b. Set the pedestal of the dial indicator on the top of the injector cam roller.
Adjust the pedestal so it can travel the entire upward movement of the
lobe.
c. Continue to slowly bar the engine over in the direction of rotation until the
dial indicator shows no more upward lift. The needle of the dial indicator
will stop moving indicating maximum lift.
d. This is the point of maximum injector roller lift, the injector can now be
set.
e. If you rotate the engine beyond this point you will have to bar the engine
over in the opposite direction at least 1/4 turn and then bar the engine
over in the direction of rotation until maximum injector roller lift is
obtained.
5. Stop engine rotation and note which cylinder this is, and follow the sequence
listed in Table 1 to correctly set injector and valves.
Max. injector lobe travel on
Cylinder No.
Adjust Injector on
Cylinder No.
Adjust Valves on
Cylinder No.
6
6
2
2
2
4
4
4
1
1
1
5
5
5
3
3
3
6
Table 1. Valve Lash and N3 Injector Setting Adjustment Sequence
6. This injector can now be set using this procedure:
a. Loosen the locknut on the adjusting screw at least two full turns.
b. Tighten the adjusting screw until the injector plunger bottoms out; torque
value should be 4.51 N·m (40 in·lbs).
c. Back the adjusting screw off 3/4 of a turn 0.75 mm ± 0.25 mm (0.03 in.±
0.01 in.) and tighten the locknut to 41-47 N·m (30-35 lb·ft).
d. The injector is now adjusted.
The following is from the EPA07 Series 60 Service Manual (6SE2007).
**** Valve Lash Adjustments and E3 Fuel Injector Setting
1. Exhaust Valve Rocker Arm Assembly 4. Rocker Arm Shaft
2. Fuel Injector Rocker Arm Assembly
5. Cylinder Head
3. Camshaft 6. Intake Rocker Arm Assembly
Figure 1. Valve Overlap Period
Adjust the valves and fuel injector settings as follows:
1. Disconnect starting power for engine.
2. Remove the engine valve rocker cover as outlined. Refer to "Removal and
Cleaning of Two-piece Rocker Cover for Diesel Engines Only" for two-piece
rocker cover, and refer to "Removal and Cleaning of Three-piece Rocker Cover"
for three-piece rocker cover.
3. Insert a 3/4 in. drive breaker bar or ratchet into the square hole in the center of
the crankshaft pulley.
4. Bar the engine in the direction of rotation and observe a cylinder where the
injector rocker arm is just beginning to depress the injector plunger, both the
intake and exhaust valves should be closed. See Figure 1.
a. Stop turning the engine and mount a magnetic base dial indicator so
you can monitor the upward lift of travel of that injector lobe.
b. Set the pedestal of the dial indicator on the top of the injector cam roller.
Adjust the pedestal so it can travel the entire upward movement of the
lobe.
c. Continue to slowly bar the engine over in the direction of rotation until
the dial indicator shows no more upward lift. The needle of the dial
indicator will stop moving indicating maximum lift.
d. This is the point of maximum injector roller lift, the injector can now be
set.
e. If you rotate the engine beyond this point you will have to bar the engine
over in the opposite direction at least 1/4 turn and then bar the engine
over in the direction of rotation until maximum injector roller lift is
obtained.
5. Stop engine rotation and note which cylinder this is, and follow the sequence
listed in Table "Valve Lash and Injector Setting Adjustment Sequence" to
correctly set injector and valves.
Max. injector lobe travel on
Cylinder No.
Adjust Injector on
Cylinder No.
Adjust Valves on
Cylinder No.
6
6
2
2
2
4
4
4
1
1
1
5
5
5
3
3
3
6
Table 1. Valve Lash and Injector Setting Adjustment Sequence
6. This injector can now be set using this procedure:
a. Loosen the locknut on the adjusting screw at least two full turns.
b. Tighten the adjusting screw until the injector plunger bottoms out; torque
value should be 4.51 N·m (40 in·lbs).
c. Back the adjusting screw off 3/4 of a turn 0.75 mm ± 0.25 mm (0.03 in.±
0.01in.) and tighten the locknut to 41-47 N·m (30-35 lb·ft).
d. The injector is now adjusted.
7. Adjust the valves on the corresponding cylinders listed in Table "Valve Lash and
Injector Setting Adjustment Sequence”.
NOTICE:
Never set the valves and injector of the same cylinder at the same time. Doing
this will result in engine damage.
8. To adjust the intake valves, insert a 0.203 mm (0.008 in.) feeler gage between
the tip of the valve stem and the valve button at the end of the rocker arm. See
Figure 2.
1. Intake Valve
4. Locknut
2. Valve Button
5. Feeler Gage
3. Intake Rocker Arm Assembly
6. Tip of Intake Valve
Figure 2. Intake Valve Adjustment
9. Loosen the locknut, and turn the adjusting set screw until the feeler gage
produces an even smooth pull between the valve stem and valve button.
10. Torque the locknut to 41 - 47 N·m (30 - 35 lb·ft) and remove the feeler gage.
Reinsert the feeler gage to ensure that the adjustment did not change when the
locknut was tightened. Readjust as necessary.
11. The exhaust valves are adjusted the same way as the intake valves, except use
a 0.508 mm (0.020 in.) feeler gage. See Figure 3.
1. Location of Identification Groove 5. Locknut
2. Valve Button
6. Exhaust Rocker Arm Assembly
3. Allen Wrench
7. Feeler Gage
4. Adjusting Screw
8. Tip of Exhaust Valve
Figure 3. Exhaust Valve Adjustment
12. Repeat steps 4-11 until all injectors and valves have been set.
13. Install the engine rocker cover. Refer to "Installation of Two-Piece and
ThreePiece Rocker Covers" for two and three-piece rocker covers.
14. Reconnect starting power to the engine.
SERIES 50 DIESEL VALVE LASH, JAKE BRAKE LASH AND CAM TIMING SPECS
Model
Engine
Year
DDEC
Camshaft/Assembly
Part Number
Injector Height
mm (inches)
Intake Valve Lash
mm (inches)
Exhaust Valve Lash
mm (inches)
Jake Brake
Model
Jake Brake Lash
mm (inches)
Cam Timing Range
mm (inches)
GU
8.5
1993-97
II
23511364 / 785
23524895 / 896
78.2 (3.078)
0.203 (0.008)
0.508 (0.020)
750
0.660 (0.026)
5.21-6.27 (0.205-0.247)
GK
8.5
1993-97
III
23511364 / 785
23524895 / 896
78.8 (3.103)
0.203 (0.008)
0.660 (0.026)*
750
0.660 (0.026)
5.21-6.27 (0.205-0.247)
GK
8.5
1993-97
III
23519870 / 871
78.8 (3.103)
0.203 (0.008)
0.660 (0.026)*
750
0.660 (0.026)
5.21-6.27 (0.205-0.247)
TK
8.5
1998-99
IV
23522197 / 198
23524893 / 894
80.3 (3.161)
0.203 (0.008)
0.660 (0.026)*
750A
0.584 (0.023)
5.54-6.60 (0.218-0.260)
MK,MK_E
8.5
1999-02
IV
23524421 / 422
23524915 / 916
81.0 (3.190)
0.203 (0.008)
0.660 (0.026)**
750B
0.584 (0.023)
4.92-5.99 (0.194-0.236)
MK_E
8.5
2003-04
IV
23527028 / 029
81.0 (3.190)
0.203 (0.008)
0.508 (0.020)
750B
0.584 (0.023)
5.02-6.09 (0.198-0.240)
* May be equipped with newer replacement cylinder head 23529994 or R23529994 containing Pyromet exhaust valves that require a 0.508 mm (0.020 in) lash setting. Check cylinder
head
part number before servicing exhaust valve lash.
** Models MK and MK_E with serial numbers after 04R39213 were built with cylinder head 23529994, which contains Pyromet exhaust valves requiring a
0.508 mm (0.020 in) lash setting.
SERIES 50 GAS VALVE LASH AND CAM TIMING SPECS
Model
Engine
Year
DDEC
Camshaft/Assembly Part
Number
Intake Valve Lash
mm (inches)
Exhaust Valve Lash
mm (inches)
Service Cam Timing Range
mm (inches)
GKG
8.5
1994-98
III
23519143 / 144
23524891 / 892
0.279 (0.011)
0.914 (0.036)
2.18-2.87 (0.086 -0.113)
TKG
8.5
1998-02
IV
23519143 / 144
23524891 / 892
0.279 (0.011)
0.914 (0.036)
2.18-2.87 (0.086 -0.113)
MKG
8.5
2002-04
IV
23530959 / 919
0.279 (0.011)
0.914 (0.036)
2.18-2.87 (0.086 -0.113)
SERIES 60 GAS VALVE LASH AND CAM TIMING SPECS
Model
Engine
Year
DDEC
Camshaft/Assembly Part
Number
Intake Valve Lash
mm (inches)
Exhaust Valve Lash
mm (inches)
Service Cam Timing
Range mm (inches)
TKG
12.7
1995-98
III
23520286 / 627
23524909 / 910
0.279 (0.011)
0.914 (0.036)
2.18-2.87 (0.086 -0.113)
TKG
12.7
1998-04
IV
23520286 / 627
23524909 / 910
0.279 (0.011)
0.914 (0.036)
2.18-2.87 (0.086 -0.113)