CYLINDER AS 1411975 - Caterpillar

Caterpillar: Confidential Yellow
PRIORITY - 6T4051 HUB NEEDS TO BE REPLACED IN THE STEERING CLUTCH AND BRAKE MODULES ON CERTAIN D6H AND D7H TRACTORS - PI3 381 - MAILED US, CANADA, CACO, CFEL, COSA
  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.
U-34 A-23 E-18 O-25 PRIORITY 4123 PI3381 COMPLETION DATE Termination Date
August 31, 1989 February 28, 1990
Problem
The 6T4051 Hub may have a heat treat crack on the inside radii on certain D6H and D7H Tractors.
Affected Product
Model Identification Number D6H 4RC2228, 2244-2256, 2282, 2283 6FC631-643, 647, 654 D7H 79Z2080-2091, 2093, 2096-2099, 2101, 2104, 2109, 2110, 2113-2115, 2117 80Z772-775
Parts Needed
Dealers will need to order parts for this Program. 2 - 6T4051 Hub Assembly
Action Required
Remove the steering clutch and brake modules and replace the 6T4051 Hub Assemblies with new ones. ****** IMAGE: SEBE3979.00001.001 CAPTION:
Service Claim Allowances
Caterpillar Dealer Suggested Customer Suggested Parts Labor Hrs. Parts Labor Hrs. Parts Labor Hrs. (D/N) (Sell) (C/L) (Sell) 100% 12 0 0 0 0 This is a 12-hour job.
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.