PUMP GP-PS- 4557935 - Caterpillar

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.
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 "PS8719" as the Part Number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and use "T" as the SIMS Description Code. If administered after failure, use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.
Termination Date
July 31, 1997Problem
The Air Fuel Ratio Control level setting was improperly set at the factory and needs to be reset.
Affected Product
Model & Identification Number
Group 1
814F (9DM128)
815F (1GN222-224, 1GN226-230, 1GN232-2412BS2-4)
816F (5FN269-273)
966F (1SL1787-1791, 1SL1793-1800, 1SL1802, 1SL1803, 1SL1807-1874)
970F (7SK728, 7SK729)
65C (2ZJ2058-2070, 2ZJ2072-2089)
D6H (3YG6384-6399, 3YG6401-6406, 3YG6408-6424 3ZF6354-6359 , 3ZF6361-6371, 3ZF6373 4RC5903 , 4RC5905-5909 6CK412 6FC5615-5618 9KJ1284-1297 , 9KJ1299-1348)
D7H (4FG5649, 4FG5650 5BF6142 , 5BF6145, 5BF6147, 5BF6148, 5BF6150-6171, 5BF6176 79Z6001-6004 , 79Z6006-6014)
330 (5YM1950, 5YM1952, 5YM1953, 5YM1956, 5YM1958-1973, 5YM1975-1990, 5YM1992 , 5YM1994-1998, 5YM2001-2004 , 5YM2006-2011, 5YM2015, 5YM2016, 5YM2018-2101)
330B (6DR194, 6DR196, 6DR198-201, 6DR203, 6DR204)
14H (7WJ198-212, 7WJ214, 7WJ217, 7WJ218, 7WJ222, 7WJ224, 7WJ225, 7WJ229-245, 7WJ247 )
140H (2ZK771, 2ZK772, 2ZK778-782, 2ZK784-787, 2ZK790-794, 2ZK797-801, 2ZK804 , 2ZK806, 2ZK807, 2ZK809, 2ZK810, 2ZK812-815, 2ZK817, 2ZK818, 2ZK821, 2ZK824 , 2ZK825, 2ZK827, 2ZK829, 2ZK832-834, 2ZK838-843, 2ZK846, 2ZK850-857 , 2ZK859-863, 2ZK865, 2ZK869, 2ZK870, 2ZK872-874, 2ZK877, 2ZK879 , 2ZK880, 2ZK882-884, 2ZK886, 2ZK887, 2ZK889, 2ZK890, 2ZK891, 2ZK893, 2ZK895-899 , 2ZK904, 2ZK906, 2ZK964 9ZN86 , 9ZN90, 9ZN91)
143H (1AL133, 1AL137-155, )
160H (6WM339, 9EJ270-280, 9EJ282, 9EJ284-287)
163H (5AK71-73)
615C (9XG749, 9XG754-758, 9XG761-763, 9XG765, 9XG766, 9XG769, 9XG771, 9XG775-777)
627F (4YK267-274)
Group 2
966F (1SL1806, 1SL1852, 1SL1853)
65C (2ZJ2071)
140H (2ZK837, 2ZK858)
160H (9EJ283)
D6H (3YG6407, 2ZF6372)
D7H (5BF6143, 5BF6144)
330 (5YM2012)
615C (9XG767)
Parts Needed
Group 1
1 - 1287794 Bolt1 - 1287796 BoltGroup 2
1 - 1115162 Control Group1 - 1287794 Bolt1 - 1287796 BoltAction Required
Group 1
1. Drill and use an easy out to remove the tamper resistant bolts on the air fuel ratio control per the service magazine article dated January 22, 1996.2. Follow the procedure in the Service Manual on setting the air fuel ratio level setting to the performance specification stamped on the valve cover.Group 2
1. Drill and use an easy out to remove the tamper resistant bolts on the air fuel ratio control per the service magazine article dated January 22, 1996. 2. Install new air fuel ratio control assembly.3. Follow the procedure in the service manual on setting the air fuel ratio lever setting to the performance specification stamped on the valve cover.Service Claim Allowances
This is a 2-hour job.
If the machine is equipped with engine compartment doors, an additional .5 hour may be claimed.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.