PSP FOR MODIFYING SINGLE PIECE PIVOT SHAFTS TO ACCEPT REPLACEABLE SPINDLES AND ADDING SEALS FOR MAJOR BOGIE BEARINGS ON CERTAIN CHALLENGER 65 TRACTORS - PS4544 - MAILED US AND CANADA, CACO, COFA, COSA Caterpillar

U-257
A-178
AU-161
O-198
7216   PS4544
NOTE: This Program can be administered either before or after a
failure. In either case the decision whether to apply the
Program is made by the dealer. When reporting the repair, use
"PS4544" as Part Number, "7755" as Group Number, and "96" as
Description Code.

December 31, 1991

Inability to retain grease and dirt entry leads to short pivot shaft, major
bogie, and bearing life. Modification of major bogie arm assemblies to
accept seals lessens this problem (GROUP 2). Also, the installation of a new
support group allows for use of bolt-on spindle replacements on certain
Challenger 65 tractors (GROUP 1).

Model Identification Number
GROUP 1
Challenger 65 7YC 1-613
GROUP 2
Challenger 65 7YC 1-1689

GROUP 1
2 - 8R9754 Plate
GROUP 2
*2 - 4E2164 Spindle
*2 - 4E2713 End Plate
4 - 8R7697 Bearing
4 - 8R7698 Bearing
* Reuse existing parts, if undamaged.

GROUP 1: Modify single piece pivot shaft to accept replaceable spindles per
instructions in January 29, 1990 issue of Service Magazine.
GROUP 2: Replace spindles and modify major bogie arm assemblies to accept
seals per instructions in July 9, 1990 issue of Service Magazine.

Product Caterpillar Dealer Suggested Customer Suggested
smu/age Parts Labor Hrs. Parts Labor Hrs. Parts Labor Hrs.
whichever (D/N) (Cost)  (C/L) (Sell)
comes
first
GROUP 1
0-5000 100% 10 0 5 0 0
0-48 mo
GROUP 2:
0-5000 100% 8 0 0 0 0
0-48 mo
NOTE: This is a 15-hour job for Group 1 and an 8-hour job for Group 2.

Any parts removed (with the exception of cores used for Caterpillar
Remanufactured parts) can be rendered useless and scrapped immediately upon
completion of the repair.