09104-21350 SPRING, RETURN Denso Cross

27Jul2006
(Revised 04Oct2006)
U-574
A-562
D-555
O-559
TM-505
Priority
PRODUCT IMPROVEMENT PROGRAM FOR ADDING VIBRATION DAMPERS TO AIR SHUT OFFS ON CERTAIN 3500 DIESEL ENGINES
1078 1435 PI31122
This Program must be administered as soon as possible.When reporting the repair, use "PI31122" as the Part Number and "7751" as the Group Number, "56" as the Warranty Claim Description Codeand "T" as the SIMS Description code. Exception: If the repair is done after failure, use "PI31122" as the Part Number, "7751" as the Group Number,"96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.
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 Revised Service Letter replaces the 24 July 2006 Service Letter. Changes have been made to Affected Product and rework procedure.
COMPLETION DATE
TERMINATION DATE
31Jan2007 31Jul2007
PROBLEM
Relative motion between the air shutoff gate and the housing may cause a wear-step in the housing. This wear can prevent the gate from closing and can lead to engine damage if the engine is operated with one gate opened and one gate closed.
AFFECTED PRODUCT
Model Identification Number
3508B 2HW00237, 239, 335-381
3DM00332, 334, 355, 358-359, 511-521
3DW00189
CBB00444-00537
S2A00123, 127
S2B00254, 258-260, 264, 269-270, 290-292, 305-309
3508C LLC00103-00116
LLE00101-00123
3512B 1PW00447
2AF00487-00488, 503-504, 545-562
4AW00174, 176-182, 200-201, 263, 269, 271, 275, 295, 307-310, 315, 317, 319, 439, 468-469, 472, 476, 478, 563, 590-593, 598-604, 606-608, 666-667, 670, 687-688, 696, 701, 733-737, 740-741, 744, 748, 750-752, 754-755, 757, 762, 767, 769, 773-774, 788, 790-791, 862, 1264-1663
8EM00267-00268, 272, 293, 520, 522-523, 532-533, 536-537, 554-555
PTF00170-00172, 175-180
S2H00195, 197-198, 208-209, 218, 221-223, 225-236
S2J00298, 301-302, 304, 334, 341-350
S2M00151-00154
3512C LLA00103-00150, 152-310
LLF00100-00133
3516B 2FW00391-00394
9AN00197, 219, 339, 341-343, 397-400, 403-405
CBN00381-00440
LEK00127-00130
S2R00187-00188, 190-196, 216-230
S2S00227-00230
S2W00106
S2X00364-00365, 395-396, 419, 449, 463-482
S2Y00109-00110
3516B HD S2Z00106-00123
PARTS NEEDED
Qty
Part Number Description
2 1790133 FILM-AIR SHUTOFF
2 2898498 DAMPER AS
ACTION REQUIRED
Refer to the attached Rework Procedure.
OWNER NOTIFICATION
U.S. and Canadian owners will receive the attached Owner Notification.
SERVICE CLAIM ALLOWANCES