155020-8720 ZEXEL 9 421 610 383 BOSCH DIAPHRAGM 9421610383 1550208720 9813112170

Problem
The fuel injection nozzles used in certain D3C, D4C, D4H, D5C, and D5C LGP Tractors; D4H Track Skidders; 931C, 935C, 943, And 953 Loaders; 916 and 926E Loaders; and IT18B and IT28B Tool Carriers may not have had the orifices machined at the correct spray angle. The fuel nozzles in question are 4W7015 Nozzles with a date code of D91, E91, or F91.
Affected Product
Model & Identification Number
D3C (5CJ552-751; 4HJ443-573; 8DG67-105; 7JG76-90; 5ZG48-51)
D4C (7KG469-597; 9BG197-303)
D4H (2AC4156-5522; 3AC4196-4217; 8PB4997-5566; 9DB4798-5058)
D5C (6PJ183-339)
D5C LGP (3MK189-223)
D4H TSK (8ZF53-56)
931C (9AG36-39; 2AK62-66; 6AJ87-101)
935C (5DJ108-151)
943 (19Z1901-1904)
953 (20Z4305-4355; 44Z758-763)
IT18B (2NJ344-390)
IT28B (1JK457-548; 1HF2397-2420)
916 (5KC1832-1924)
926E (4NB3675-3703; 8NB2464-2625)
Parts Needed
1 - 7C7955 Gasket1 - 4W7015 Nozzle AssemblyUse as required (1 to 4 Nozzles May Be Needed)
Action Required
Parts Stock
Remove all 4W7015 Nozzles, that have a date code of D91, E91, or F91, from parts stock.
Affected Product
If excessive quantities of black smoke are noticeable when operating at high idle or under full load conditions, remove and inspect all four of the nozzles. Replace any 4W7015 Nozzle that has a date code of D91, E91, or F91. One or more of the four nozzles may have these date codes.
Service Claim Allowances
Parts Stock
Submit one claim for all 4W7015 Nozzles removed from parts stock.
Affected Product
This is a 3-hour job.
Parts Disposition
U.S. And Canadian Dealers
Return all 4W7015 Nozzles and a copy of the claim to:
Caterpillar Inc.
Attn: Supplier Recovery Supervisor
Warehouse #4 Docks 7 thru 10
8201 N. University
Peoria, IL 61615
CofA
Return all 4W7015 Nozzles and a copy of the claim to:
Caterpillar of Australia
Warranty Claims Area
1 Sharps Rd.
Tullamarine Vic 3043
All Other Dealers
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.