CORE AS-OCLR 9Y3604 - Caterpillar

The 145-9278 Bolts need to be inspected on both front wheels of certain 793F Off-Highway Trucks. The existing 145-9278 Bolts could be loose from factory due to an improper torque being applied.
AFFECTED PRODUCT
Model Identification Number
793F SSP00923-00924, 932-936, 938-943, 946, 952-955, 967, 972-974, 976-977, 980-982, 984-985, 989, 993, 997, 1000-1002
PARTS NEEDED
Qty
Part Number Description
2 4S5879 SEAL-O RING
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 40% 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 the Service Manual if/as necessary.
The conformance to the torque of the tightening procedure can be evaluated by a static inspection check after assembly. The static inspection check will help inspect the joint for looseness.
Begin by, parking the machine on a dry, level, solid surface that is free of any debris. Next, refer to media for "Use of Wheel Chocks" for the machine you are working on.
Drain the front wheel bearing oil low enough to allow the wheel bearing cover to be removed. Save the oil for reuse.
Remove the wheel bearing cover.
Apply a torque of 450 Nm (332 lb-ft) to each 145-9278 Bolt. If they do not move, then proper torque was applied from factory.
If a bolt moves then the truck needs to have the front wheel properly jacked up. Please refer to media for "Jacking Locations" for the machine you are working on.
Next, remove the loose bolt. Make sure there is no damage to the bolt. Apply Loctite? 242 (blue) to the bolt threads and reinstall it. Tighten the reinstalled bolt to a torque of 520 +/- 70 Nm (384 +/-52 lb-ft). Continue this procedure for all 14 bolts then proceed to do the opposite side front wheel.
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OWNER NOTIFICATION
Owners in the following countries will receive the attached Owner Notification:
US
Canada
SERVICE CLAIM ALLOWANCES
Caterpillar Dealer Suggested Customer Suggested
Parts % Labor Hrs% Parts % Labor Hrs% Parts % Labor Hrs%
100% 100% 0% 0% 0% 0%
This is a 3.0-hour job
This is a 3.0-hour job to inspect both wheels.
PARTS DISPOSITION
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM AS SOON AS POSSIBLE.
XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999
PRIORITY - PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING THE FRONT WHEEL RETAINER BOLTS ON CERTAIN 793D AND 793F OFF-HIGHWAY TRUCKS
MODELS INVOLVED - 793D and 793F Off-Highway Trucks
Dear Cat Product Owner:
The front wheel retainer bolts need to be inspected on the products listed below. The existing front wheel retainer bolts can be loose. You will not be charged for the service performed.
Contact your local Cat dealer immediately to schedule this service. The dealer will advise you of the time required to complete this service.
If you are no longer the owner of this product(s), please contact your local Cat dealer so that our records can be updated. Please refer the dealer to their Service Letter dated 22Apr2014 when scheduling this service.
We regret the inconvenience this may cause you, but urge you to