WRENCH-SPANNER 9U5120 - Caterpillar

This Revised Service Letter replaces the 13Jun2012 Service Letter. Changes have been made to the Termination Date.
TERMINATION DATE
30Apr2015
PROBLEM
The inlet to the brake system suction tube may be positioned too close to the bottom of the hydraulic tank. This condition results in significant flow restriction which may cause brake pump cavitation, system heating and system instability. Inspection of all in house tanks and three in the field have resulted in 17% having this issue. Caterpillar recommends that priority be placed upon any 793F Off-Highway Trucks which have previously experienced brake pump or brake filter failures (filter element may melt and deform). Any truck which has experienced a brake pump, filter failure or other indications of brake system instability should be inspected and corrected as soon as possible. All other trucks can be scheduled for this inspection at the dealer?s discretion.
AFFECTED PRODUCT
Model Identification Number
793F SSP00112-00641
793F CMD RBT00111-00118
793F XQ SND00100-00115
PARTS NEEDED
Qty
Part Number Description
1 5D6176 COVER (after inspection, if required)
4 8T4192 BOLT-HEX HEAD (after inspection, if required)
1 2352476 SEAL-RECTANGULAR (after inspection, if required)
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 7% 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
Perform inspection and rework procedure defined in Special Instruction REHS7586 "Procedure to Inspect and Repair the Hydraulic Tank Tube As on the 793 Off-Highway Truck".
SERVICE CLAIM ALLOWANCES
Product smu/age whichever comes first Caterpillar Dealer Suggested Customer Suggested
Parts % Labor Hrs% Parts % Labor Hrs% Parts % Labor Hrs%
0-18000 hrs,
0-36 mo 100.0% 100.0% 0.0% 0.0% 0.0% 0.0%
This is a 2.0-hour job
This is a 2 hour job for the inspection portion. If the inspection reveals the need for rework we will allow an additional 6 hours of labor.
PARTS DISPOSITION
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.