PSP FOR INSTALLING AN ENGINE OVERSPEED WARNING SYSTEM ON D11N TRACTORS - PS4505 - MAILED US AND CANADA, COFA, CFEL, COSA, LIM ITED CACO
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PSP FOR INSTALLING AN ENGINE OVERSPEED WARNING SYSTEM ON D11N TRACTORS - PS4505 - MAILED US AND CANADA, COFA, CFEL, COSA, LIM ITED CACO
NOTE: 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.
U-216 A-152.1 AU-137 E-131 O-168 1000, 7410 PS4505 NOTE: 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 "PS4505" as Part Number, "7755" as Group Number, and "96" as Description Code.
Termination Date
October 31, 1991
Problem
Operation on steep slopes and/or at high travel speed may lead to engine overspeed under certain conditions. Due to the sound proofing of the cabs, and the low level of track noise at high travel speeds, the operator is generally not aware that the engine is in an overspeed condition. Engine damage due to overspeed is cumulative in nature. Repeated incidents of moderate overspeed may ultimately be as damaging as a single case of severe overspeed.
Affected Product
Model Identification Number D11N 74Z1-828
Parts Needed
2 - 9B7237 Bolt 1 - 9D2867 Lens 1 - 9D3127 Base Assembly 1 - 8E3004 Plate Assembly 1 - 8E3006 Harness Assembly 1 - 8E4528 Cover As.(Req'd Without Fire Suppression Only) 1 - 8E4530 Cover As. (Req'd With Fire Suppression Only) 1 - 8E4533 Bracket Assembly (74Z1-318 Only) 2 - 2L8071 Splice 1 - 5F9757 Grommet 4 - 4M5282 Bolt 1 - 6N2944 Plug (Req'd With Fire Suppression Only) 1 - 7N5876 Lamp 1 - 7N8001 Switch Assembly 1 - 9N4653 Grommet 1 - 5P8438 Grommet 15 - 3S2093 Strap 3 - 5S7379 Bolt 2 - 3T3046 Clip Assembly 2 - 3T3048 Clip Assembly 3 - 3T6680 Seal 4 - 8T4205 Washer 3 - 8T4896 Washer 1 - 9X9827 Control Group 1 - 9X5393 Sensor 1 - 9X8715 Film
Action Required
Install the overspeed warning system as described in Special Instruction SEHS9257 Installation of Overspeed Monitoring System In D11N Tractors.
Service Claim Allowances
Product Caterpillar Dealer Suggested Customer Suggested smu/age Parts Labor Hrs. Parts Labor Hrs. Parts Labor Hrs. whichever (D/N) (Cost) (C/L) (Sell) comes first 0-10000 100% 4 0 0 0 0 0-48 mo NOTE: This is a 4-hour job.
Parts Disposition
All parts removed (with the exception of cores used for Caterpillar Remanufactured parts) should be rendered useless and scrapped immediately upon completion of the repair.
Caterpillar Information System:
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