BODY 6N1028 - 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 "PS0900" 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
March 31, 1997Problem
The transmission actual gear switch may make intermittent contact or become shorted due to contact wear on certain 621E, 621F, 623E, 623F, 627E, 627F, 631E, 637E, 651E, and 657E Wheel Tractor Scrapers; 768C, 772B, and 776C Tractors; and 769C, 771C, 773B, 775B, and 777C Trucks. When this condition exists the transmission fails to shift.
Affected Product
Model & Identification Number
621E (6AB1-1596, 05A9162-9163, 9321-9322, 9403, 9411, 9445, 9449-9452, 9482, 9497-9498, 9510-9513, 9586, 9588, 9610, 9648-9650 9653, 9664-9665, 9709-9710, 9761-9764, 9796-9800, 9805, 9841, 9865, 9880-9881, 9896, 9901, 9913-9920, 9926-9927, 9989, 10074, 10077, 1008810091, 10102, 1011710118- 10156-10157, 10173-10174, 10180-10186, 10193-10194, 10205)
621F (4SK1-319, 05A10224-10225, 10254, 10330, 10337-10340,10383, 10386, 10397, 10404, 10423-10425, 10439, 10450, 10503-10504, 10534, 10650010651, 10675, 10718-10721, 10724-10726, 10756,10784-10785, 10805, 10868, 10999)
623E (6YF1-441)
623F (6BK1-242)
627E (7CG1-941)
627F (1DL1-209)
631E (1AB1-1575, 05A8597-8599, 8970-8972, 9059, 9066, 9072-9073, 9076, 9114-9115, 9158, 9355-9358, 9393, 9421-9422, 9431-9432, 9550, 9556-9557, 9651-9652, 9666-9667, 9673, 9711-9712, 9750-9751, 9801, 9809, 9833-9836, 9855-9864, 9897-9900, 9904 9905, 9908-9912, 9935, 10059, 10110-10111, 10307-10308, 10438, 10638-10643, 10757, 10808, 10905)
637E (1FB1-630, 1FB660)
651E (89Z1-274, 05A8926-8927, 8935-8937, 8968, 9181-9182, 9306,9475, 9669-9672, 9808, 9811-9812, 9837, 10195, 10196)
657E (90Z1-225 91Z1-476 , 05A10247-10248, 10303-10304)
768C (02X350-403)
769C (01X2877-6964, 01X6970, 05A8945, 8985, 9094, 9120, 9348, 9447-9448, 9493-9494, 9543, 9545, 9547, 9549, 9582-9585, 9594-9597, 9661, 9704, 10030-10033, 10137, 10149, 10197, 10356, 10389, 10420, 10490, 10502, 10664, 10722, 10723, 10770, 10803)
771C (3BJ1-250)
772B (64W168-302, 05A10054)
773B (63W1221-4535, 63W4562, 05A9417-9418, 9423, 9633, 9713, 9817, 9964, 9978, 9979, 10406-10411, 10430)
775B (7XJ1-283, 7XJ287)
776C (2TK1-88)
777C (4XJ1-764, 4XJ766-793, 4XJ832)
Parts Needed
1 - 1188471 Control Gp.1 - 1209288 Harness As.1 - 1274872 Harness As.Action Required
See the attached procedure.
Service Claim Allowances
This is a 1-hour job.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
Attach.(1-Rework Procedure)Rework Procedure
Transmission Switch Retrofit Procedures For Small Off Highway Trucks And Scrapers.
Description
The new 118-8471 Switch is a direct replacement for the former 6V5828 Switch, however, the new switch requires a DC power source. The former 7T3418 Transmission Harness is replaced by a 120-9288 Harness. A retrofit harness (127-4872) will provide 24 volt power from a source located at or near the EPTC/EPTC II (trans control). The retrofit harness is inserted between the connectors for the transmission chassis harness and the transmission switch harness (located at the bulkhead connector on the transmission side manifold). A single lead (harness) is then routed parallel to the transmission chassis harness to the 24 volt power source at the transmission control. Do not use power from the transmission speed sensor harness for the transmission switch.
Installation Procedure
1. Disconnect the bulkhead connector between the transmission switch harness and the transmission chassis harness. Remove the old switch (6V5828) and harness (7T3418).2. Install the new switch (118-8471) and harness (120-9288).3. Install the 127-4872 retrofit harness. Connect one end of the "T" portion of the