SB1334
Service Bulletin Details
Public Details for: SB1334
To change "quick release valve" of front axle brakes.
- 9999 - 2021 - 2020 - 2019 - 2018 - 2017 - 2016 - 2015 - 2014 - 2013 - 2012 - 2011 - 2010 - 2009 - 2008 -
Models from 9999
9999 VAN HOOL TD925 |
9999 VAN HOOL TDX25 |
Models from 2021
2021 VAN HOOL TDX25 |
Models from 2020
2020 VAN HOOL TDX25 |
Models from 2019
2019 VAN HOOL TD925 |
2019 VAN HOOL TDX25 |
Models from 2018
2018 VAN HOOL TD925 |
2018 VAN HOOL TDX25 |
Models from 2017
2017 VAN HOOL TD925 |
2017 VAN HOOL TDX25 |
Models from 2016
2016 VAN HOOL TD925 |
2016 VAN HOOL TDX25 |
Models from 2015
2015 VAN HOOL TD925 |
2015 VAN HOOL TDX25 |
Models from 2014
2014 VAN HOOL TD925 |
2014 VAN HOOL TDX25 |
Models from 2013
2013 VAN HOOL TD925 |
Models from 2012
2012 VAN HOOL TD925 |
Models from 2011
2011 VAN HOOL TD925 |
Models from 2010
2010 VAN HOOL TD925 |
Models from 2009
2009 VAN HOOL TD925 |
Models from 2008
2008 VAN HOOL TD925 |
SERVICE BULLETIN SB1334 ADDRESSEES : ABC Customer Care and Parts Source Owners and operators of coaches listed under “Application” VEHICLE MODEL : TD925US MANUAL SECTION : 5.10 Brakes – Front axle brakes BULLETIN TYPE : Field Change Program DATE : March 17th, 2016 SUBJECT : To change “Quick release valve” of front axle brakes TERMS & CONDITIONS : Refer to the warranty section further in this Bulletin. APPLICATION: Model TD925US VIN 42814 Î 42820 42877 Î 42879 42881 42892 DESCRIPTION: • On the above mentioned units it is necessary to change the pre-assembled quick release valve VH11173539 (together with two-way valve VH637209080) of the front axle brakes by preassembled relay valve VH11480342. • To address this change, Van Hool is conducting a Field Change Program, to install the parts provided in kit # VH11493383. Terms and conditions of which are explained further on under “Warranty”. • Owners and operators of the affected units should follow the procedure below to change the quick release valve of the front axle brakes. PARTS: Conversion kit VH11493383 - Figure 1 VH reference 11480342 660229805 660209930 660636402 660625907 Description Pre-assembled relay valve Screw M8x1.25x25mm Self-locking nut M8x1.25mm Coil spring lock washer Washer Qty. 1 2 2 2 4 Continued on next page SB1334_USA_en_2016-03-17 Page 1 of 8 Figure 1: Van Hool conversion kit 11493383 PROCEDURE: If you do not have the expertise to perform this procedure, do not hesitate to go to your nearest ABC Customer Care & parts Source dealership. 1. General: This job should be executed by a technician experienced in air systems. 2. Special tools, equipment or services: No special tools, equipment or services are required. 3. Preparations: • Park the vehicle on a level-surfaced inspection pit with the front wheels straight. When using portable post lifts (always use 6 post lifts) instead of an inspection pit, always lower the suspension first. • Apply the parking brake and stop the engine. • Switch off all systems and turn off the battery master switch on the dashboard. • Open the mechanical battery switch. • Put a “DO NOT OPERATE” tag on the instrument panel before beginning any inspection or performing any repair. • Open the rear engine compartment door and push on the red button of the safety switch and equip it with a key lock. • Depressurize the compressed-air tank of the front-axle brakes by means of the tank drain valve. For the location of the air tanks, refer to chapter 13.17 of the maintenance manual. • Read the entire procedure before beginning to work. WARNING! Observe safe shop practices at all times. Continued on next page Page 2 of 8 SB1334_USA_en_2016-03-17 4. Pneumatics - safety rules and installation recommendations: To avoid personal injury when working on or around the air system and its components, the following precautions should be taken: • When lines are being disconnected, make sure to completely de-pressurize the system affected. • Unless you are certain that all system air pressure has been vented, never connect or disconnect a pressurized line. It may whip, as air escapes. Also, never remove a component or open a line unless you are certain that all system air pressure has been vented. • Keep hands away from the brake caliper; they may apply as the system pressure drops. Stay away from deflating air bellows. • Never exceed the recommended air pressure and always wear safety glasses, when working on air systems. Before installing a line, be sure to blow it out with compressed air to remove any dirt, which may have been allowed to enter while the tubing was in storage. Cap the line while routing it during installation. • Tubing should be installed free of strain, twist or torsion. Avoid acute bending and stretching. • When installed, check all tubing connections for tightness. • Make sure there is adequate clearance between the tubing and anything it might be able to contact. • Install tubing away from heat sources. 5. Raufoss fittings: Most of the air lines are connected with Raufoss fittings. Please find some extra information about these fittings. a. To separate fitting housing from nipple Step 1 Action Open the snap arms on the fitting housing by using an ordinary snap ring pliers. Figure 2 2 Pull the housing from the nipple. Continued on next page SB1334_USA_en_2016-03-17 Page 3 of 8 b. To separate air line from fitting housing Step 1 Action Push the air line to the bottom of the fitting housing. Figure 3 2 Apply the release tool to the air line by opening the slit. Figure 4 3 Close the slit when applied on the air line and press the release tool into the housing. Use silicone spray to ease the insert of the tool. Figure 5 4 Pull the air line out while pushing the tool. Turning the air line can easy the action. Figure 6 Continued on next page Page 4 of 8 SB1334_USA_en_2016-03-17 c. To connect air line Step Action 1 CAUTION! Never insert a damaged or dirty tube end into the fitting! Cut the air line at 90°. A maximum deviation of 10° is allowed. Secure the air line cutting process to avoid scratches, burrs, damage, or dirt. Figure 7 2 Insert the air line into the fitting housing by pushing and turning it simultaneously. Figure 8 3 Push the air line far enough until it has passed the main seal O-ring into the housing to avoid slipping out. The connection is sealed now. Figure 9 If the air line is not fully assembled, a local slot in the blue cone element will give space for a displacement of the environmental seal O-ring. When pressurized this will give a clear whistle sound. The air line can be re-pushed under pressure. When the whistle sound is gone, the air line is fully assembled. Figure 10: Local slot in the blue cone element Continued on next page SB1334_USA_en_2016-03-17 Page 5 of 8 d. To connect fitting housing to nipple Step Action 1 Never force the nipple into the housing with an obviously angled position. Enter the nipple in a straight position in the housing during press-in operation. Push the nipple far enough into the housing until you hear 2 ‘clicks’. Figure 11: Push the nipple far enough into the housing 6. To change quick release valve by relay valve from kit: Step 6.1 Action Remove underneath the vehicle the protection panel located below the driver seat to get access to the pneumatic components. Figure 12 6.2 Remove quick release valve 11173539 (together with the two-way valve 11480411) from the front axle brakes. Figure 13: Quick release valve + two-way valve Continued on next page Page 6 of 8 SB1334_USA_en_2016-03-17 6.3 6.4 Locate the already installed 5/8” air line marked with a red/green ring. Remove the plug of this line. Install pre-assembled relay valve 11480342 from the kit. Secure the valve to the bracket with screws 660229805 (2x), washers 660625907 (4x) coil spring lock washers 660636402 (2x) and nuts 660209930 (2x) from the kit. Figure 14: Fixation of preassembled relay valve 6.5 Connect the air lines to the pre-assembled relay valve 11480342 as follows: At the relay valve: 1. Red-green 5/8” sup 2. Green 1/2” 3. Green 1/2” At the two-way valve: 4. Green 5/8” 5. Green 1/4” 6. Green 3/8” 7. Green 1, 3/8” 6.6 Figure 15 Check the air system for air leaks. End of procedure. Continued on next page SB1334_USA_en_2016-03-17 Page 7 of 8 WARRANTY: 1. Terms and conditions: Van Hool will accept warranty claims for this repair as follows: Parts: parts will be supplied through regular channels, free of charge. Labor allowance: 13/4 hour for labor will be awarded per coach repaired. Campaign expiration date: Service Bulletin issue date + 1 year. 2. Claim references: • • Causal part: quick release valve 11173539 (together with two-way valve 11480411) Job code: O05021N Claim submission: Contact ABC Customer Care Warranty Department for guidance. INFORMATION HANDLING: Important supplements and modifications of technical information not yet included in the manual are communicated by means of Service Bulletins. VAN HOOL CUSTOMER PORTAL: Consult the Van Hool customer portal for the latest service documentation. Beside the maintenance manual, you will also find the operating manual and the spare parts catalogue of your vehicle on the customer portal. The customer portal is accessible through www.vanhool.be, and only with a code (password) from Van Hool. If you do not have a password yet, request it by using the link on the Van Hool website. Page 8 of 8 SB1334_USA_en_2016-03-17