PRODUCT SUPPORT PROGRAM FOR REPLACING THE FRONT WHEEL BEARINGS ON CERTAIN 793D, 793F, AND 793F CMD OFF-HIGHWAY TRUCKS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REPLACING THE FRONT WHEEL BEARINGS ON CERTAIN 793D, 793F, AND 793F CMD OFF-HIGHWAY TRUCKS

Usage:

TEBE4680-00

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19May2016

U-255

A-196

D-226

O-222

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After Failure Only	PRODUCT SUPPORT PROGRAM FOR REPLACING THE FRONT WHEEL BEARINGS ON CERTAIN 793D, 793F, AND 793F CMD OFF-HIGHWAY TRUCKS
4251 4006		PS53223

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NOTE:	Caterpillar’s obligations under this Service Letter are subject to, and shall not apply in contravention of, the laws, rules, regulations, directives, ordinances, orders, or statutes of the United States, or of any other applicable jurisdiction, without recourse or liability with respect to Caterpillar.
NOTE:	This Program can only be administered after a failure occurs. The decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS53223" as the Part Number and "7755" as the Group Number. Use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.

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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.

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TERMINATION DATE

31May2018

PROBLEM

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The front wheel bearing can fail on certain 793D, 793F, and 793F CMD Off-Highway Trucks before planned component rebuild. The bearings can fail due to a factory setting issue that put them in excessive preload.

AFFECTED PRODUCT

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Model	Identification Number
793D	FDB01819-01820, 1822-1823, 1827-1828, 1834-1838
793F	D3T00142 SSP00919-00920, 922, 925-931, 937, 944-945, 947-951, 956-960, 962, 968-971, 975, 978-979, 983, 990-992, 998, 1004-1009, 1011-1017, 1019, 1023-1025, 1027-1032, 1034-1040, 1046-1047, 1049-1063, 1065-1071, 1081, 1093-1094, 1100, 1102, 1111-1112, 1116-1121, 1126-1133
793F CMD	RBT00165-00171

PARTS NEEDED

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Qty	Part Number	Description
2	5B3265	GASKET-COPPER
1	6V3689	SEAL-O RING
1	6V3967	SEAL-O-RING
2	7I5617	SHIM (PACK)
1	7X1548	SEAL-O RING
1	8M4436	SEAL-O-RING
1	1744504	BEARING-CUP
1	1839519	CUP-SPL TAPERED
1	1839520	CONE- SP T R BRG
1	2125027	BEARING-CONE
1	2979546	SEAL GP-DUO CONE
1	3780592	SEAL GP-DUO CONE
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 6% 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

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Replace the existing wheel bearings, seals and shims according to the existing D&A media. Immediate action is not required and failures can be identified by regularly monitoring the magnetic plugs for bearing debris. Once bearing debris is identified the machine should be scheduled to have the wheel rebuilt as soon as possible. If there has been a previous repair to the front wheel then no action is necessary because the issue was only on factory built front wheels in the population listed above in the Affected Product.

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SERVICE CLAIM ALLOWANCES

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Product smu/age whichever comes first	Caterpillar		Dealer Suggested		Customer Suggested
Product smu/age whichever comes first	Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
0-10000 hrs, 0-36 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%
10001-15000 hrs, 37-60 mo	33.0%	50.0%	0.0%	0.0%	50.0%	50.0%

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NOTE: This is a 56.0-hour job
NOTE: If there has been a previous repair to the wheel then no action is necessary because only factory wheel bearing setting was incorrect.

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