PUMP GP-AUX -A 20R5191 - Caterpillar

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 "PS5766" 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.
Termination Date
December 31, 2000Problem
The service life of the horn may not be as long as desired on certain D3C III, D4C III, and D5C III Tractors; also 933C and 939C Loaders. A new horn is available that is more reliable than the previous one.
Affected Product
Model & Identification Number
D3C III (4KS410-749 4TS368-829 5GS285-538 )
D4C III (6BS333-557 8CS490-937 4LS264-443 )
D5C III (5HS378-683 7PS533-1060 6CS378-663 )
933C (4MS294-434 5JS337-367 )
939C (6DS509-883)
Parts Needed
1 - 1796289 HORN AS-12VAction Required
Refer to the Service Manual as required.
Remove the radiator grill.
Replace the existing 6S7339 Horn with a new 179-6289 Horn.
Replace the radiator grill.
Service Claim Allowances
This is a 1-hour job.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.