Usage:
January 9, 2002
(Revised February 2002)
U-8
A-7
AU-2
S-2
H-2
O-10
After failure only |
PRODUCT SUPPORT PROGRAM FOR REPLACING THE SERVICE BRAKE PEDAL VALVE THAT MAY BE NOISY ON CERTAIN 966G AND 972G WHEEL LOADERS |
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4265 |
PS50387
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NOTE: The information supplied in this service letter may not be valid after the termination date of this program. Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.
NOTE: This Revised Service Letter replaces the January 9, 2002 Service Letter. Changes have been made to the Affected Product.
TERMINATION DATE
January 31, 2003PROBLEM
The service brake pedal valve may be noisy and needs to be replaced on certain 966G and 972G Wheel Loaders. The service brake pedal valve may make a loud noise during the application of the service brakes. Unlike normal oil flow noise or a noise that can be corrected by purging any air from the brake lines, this is a very loud squawk noise from the 1693504 or 2013199 Service Brake Pedal Valve.
AFFECTED PRODUCT
Model | Identification Number |
966G | 3SW859-1444 3PW822-Up 9RS1068-Up 3ZS507-767 8XW391-811 AAH360-516 |
972G |
1EW523-Up AAW208-401 9GW307-518 |
966G-II | AXJ1-453 AWY1-303 |
972G-II |
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PARTS NEEDED
2 - 3J1907 Seal - O-Ring5 - 3K0360 Seal - O-Ring
2 - 6V8398 Seal - O-Ring
2 - 1268306 Tee
1 - 2105587 Valve Group - Brake
ACTION REQUIRED
Replace the 1693504 or 2013199 Service Brake Pedal Valve with a 2105587 valve. Replace the two 1702453 Tee - Orifice at the valve output ports with two 1268306 Tee - Standard. Purge any air in the lines by bleeding all four service brakes. Check the valve for full release. Calibrate integrated braking system (IBS) if equipped with IBS.SERVICE CLAIM ALLOWANCES
Product smu/age whichever comes first |
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Parts |
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/ 0-24 mo |
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25-36 mo |
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