INJECTOR GP- 5231645 - Caterpillar

TECHNICAL INFORMATION BULLETIN July 14, 2004
Caterpillar Products 3054C (3341-Up)
3054E (3041-Up)
3056E (3561-Up)
315C (ANF1-Up)
924G (DDA1-Up),(DFZ1-Up),
(RBB1-Up),(RTA1-Up),
(WGX1-Up),(WMB1-Up)
928G (DJD1-Up),(WAC1-Up),
(WLG1-Up)
AP-655C (CDG1-Up)
CB-434D (CNH1-Up)
CB-534D (EAA1-Up),(FGH1-Up)
CP-433E (ASN1-Up)
CP-563E (BWE1-Up),(CNT1-Up)
CP-573E (ASY1-Up),(ASZ1-Up)
CP-663E (ASF1-Up),(DAF1-Up)
CS-423E (AST1-Up)
CS-433E (ASR1-Up)
CS-533E (DAK1-Up)
CS-563E (ASA1-Up),(CNG1-Up)
CS-573E (CEB1-Up),(CNN1-Up)
CS-583E (CNX1-Up),(DAJ1-Up)
CS-663E (ASB1-Up),(DAG1-Up)
CS-683E (ASG1-Up),(DAD1-Up)
IT28G (DBT1-Up),(EWF1-Up)
M313C (BDR1-Up)
M315C (BDM1-Up)
M316C (BDX1-Up)
M318C (BCZ1-Up),(BEB1-Up)
M322C (BDK1-Up),(BDY1-Up)
TH220B (SLA1-Up)
TH330B (SLB1-Up)
TH340B (SLC1-Up)
TH460B (SLF1-Up)
TH560B (SLG1-Up)
Component Code 1206SUBJECT: Idler Gear Hub Failures on 3054C, 3054E, and 3056E Engines
PROBLEM:
Excessive wear on the idler gear hub and on the idler gear bushing has been reported.
SOLUTION:
An interim containment for this problem is available. If the bushing in the 232-3668 or the 216-8633 Idler Gear Assembly (1) and the 067-6897 Idler Gear Hub (2) exhibit excessive wear , replace the worn parts with the following newly introduced parts:
1 of the 251-4336 Idler Gear Assembly
1 of the 254-6029 Idler Gear Hub
1 of the 255-1209 Retaining Plate
3 of the 6I-0650 Bolts
The new 251-4336 Idler Gear Assembly contains a new solid brush and the 254-6029 hub material has also changed. A new retaining plate that has longer screws is also included.
Early identification of wear of the idler hub and bushing is possible through Scheduled Oil Sampling (S×O×S). If the level of copper (Cu) exceeds 100 ppm in any 250-hour period, further investigation should be carried out. Other symptoms of the wear problem may include hard starting and white smoke.
Note: The following table lists the commercial and machine engine serial numbers that are affected by this change.
Engine Sales Model Engine Type Affected S/N
3054C Commercial 33400382-01603
3054C Machine CRS00322-02033
3054E Commercial 3041-Up
3054E Machine CRX00330-01741
3056E Commercial 35600199-00634
3056E Machine CPT02266-06884
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ALL RIGHTS RESERVED