BOOM AR 1545383 - Caterpillar

Caterpillar: Confidential Yellow
PRIORITY - THE PIVOT SHAFT SEAL NEEDS TO BE REPLACED ON CERTAIN D6H AND D6H LGP TRACTORS - PI3386 - MAILED US AND CAN ADA, 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.
(Revised April 1989) U-33 A-22 E-17 O-54 PRIORITY 4153 PI3386 This Revised Service Letter replaces the February 22, 1989 Service Letter, the March 16, 1989 Service Letter Supplement and the March 19, 1989 Service Letter Supplement. This Revised Service Letter includes the changes described in the above Service Letter Supplements and the addition of mail code "O" was added. COMPLETION DATE Termination Date
August 31, 1989 February 28, 1990
Problem
The pivot shaft seal may leak between the roller frame and the pivot shaft on certain D6H and D6H LGP Tractors. A new seal and spacer need to be installed.
Affected Product
Model Identification Number D6H 8KB501-503 4RC2244-2256, 2282, 2283, 2290, 2294, 2295, 2298, 2299, 2303, 2306, 2314, 2322 6CF451-554, 557 4LG634-786, 788-791, 793-795 1FJ442-464 3ZF770, 777, 791-800, 802-813, 815-817, 822, 824, 832, 835, 878, 880-883, 888, 889, 892, 908, 924 D6H LGP 6FC635, 636, 638-644, 647, 648, 653,