MANIFOLD 3533440 - Caterpillar

PROBLEM
The existing centering springs in the main control valve may fail on certain 824K Wheel Dozers, 825K Soil Compactors, and 826K Landfill Compactors.
AFFECTED PRODUCT
Model Identification Number
824K 23400258, 4001-4011
RWB00100-00135
825K 23300257, 5001-5023
SEE00200-00213
826K 23200256-00257, 6001-6047, 6200-6307
SET00300-00311, 500-515
PARTS NEEDED
Qty
Part Number Description
1 5297729 SPRING-SPOOL
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 20% of dealership population. This is an initial order recommendation only, and the ultimate responsibility for ordering the total number of parts needed to satisfy the program lies with the dealer.
ACTION REQUIRED
Refer to UENR3817, Disassembly and Assembly, 826K Landfill Compactor, 825K Soil Compactor and 824K Wheel Dozer Machine Systems, "Main Control Valve - Disassemble and Assemble".
Refer to the table in Image1 for the main control valve part numbers.
Refer to Image2 for an example of a typical main control valve cross-section.
If the existing centering spring fails, replace the failed spring with a new 529-7729 Spool Spring.
1. Access the main control valve and clean the area. Do NOT remove the main control valve from the machine.
2. Remove the cap from the main control valve.
3. Remove the directional stem from the main control valve.
Use a clean, lint-free, towel to handle the directional stem assembly. Do NOT damage the directional stem running surfaces.
4. Disassemble the directional stem. Replace the failed broken spring with a new 529-7729 Spool Spring.
5. Assemble the directional stem assembly. Tighten to a specified torque of 8 +/- 0.5 N.m (5.9 +/- 0.4 lb. ft).
6. Clean the directional stem assembly as needed and install in the main control valve.
7. Install the end cap on the main control valve. Tighten the bolts to a specified torque of 8 +/- 0.5 N.m (5.9 +/- 0.4 lb. ft).
Ensure proper orientation and alignment of the directional stem assembly and end cap. Refer to Image2.
Image1
Image2
SERVICE CLAIM ALLOWANCES
Product smu/age whichever comes first Caterpillar Dealer Suggested Customer Suggested
Parts % Labor Hrs% Parts % Labor Hrs% Parts % Labor Hrs%
0-6000 hrs,
0-36 mo 100.0% 100.0% 0.0% 0.0% 0.0% 0.0%
6001-8000 hrs,
37-48 mo 33.0% 50.0% 0.0% 0.0% 50.0% 50.0%
This is a 4.0-hour job
If there has been a previous repair, part age/hours will apply. Retain a copy of the previous repair invoice in the dealer's records for audit purposes, and specify repair date and machine hours in the "Additional Comments" section of the warranty claim.
Note: Up to $100 US Dollars is allowed for lost oil.
PARTS DISPOSITION
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.