13723 20 Mercruiser DECAL, CARBURETOR COVER (175 ALPHA ONE)

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 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 "PS5287" 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
June 30, 1998Problem
There have been a few bending failures of 3046 Engine crankshafts installed in D3C, D4C, and D5C Track-Type Tractors, 933 and 939 Track-Type Loaders, and 315 and 315L Excavators. This program provides support for 3046 Engine crankshafts with bending failures. Bending failures are caused by forces exerted by the piston to the connecting rod to the crankshaft. See the Illustration below for a typical bending failure.
Eligibility For U.S. Dealers
For U.S. dealers to be reimbursed through this program, broken cranks must be returned to Caterpillar. Refer to the "Parts Disposition" section of this letter for details.
Affected Product
Model & Identification Number
Group 1
D3C (6SL1-Up 7XL1-Up 8DL1-Up )
D4C (6YL1-Up 7SL1-Up )
D5C (6ZL1-Up 9DL1-Up )
933 (8FL1-Up 9EL1-Up )
939 (9GL1-Up)
Group 2
315 (4YM1-Up 6XM1-Up )
315L (7NM1-Up 6YM1-Up )
Parts Needed
Group 1
1 -5I4993 O-Ring 1 -2M3340 Seal-O-Ring 1 -1R0734 Filter Assembly 1 - 0951521 O-Ring 1 - 1032835 Seal Assembly 1 - 1039280 Gasket-Rear 2 - 1039279 Seal12 - 1039683 Bearing 1 - 1041229 Seal-Oil 1 - 1070973 Gasket 1 - 1070991 Bearing Set 1 - 1070992 Crankshaft Assembly 1 - 1074906 GasketGroup 2
1 -5I4993 O-Ring 1 -5I7561 Gasket 1 -5I7658 Gasket 1 -5I7666 Gasket 1 -5I7689 Gasket 1 -5I7742 Gasket 1 -1R0734 Filter Assembly 1 - 0951521 O-Ring 1 - 1039280 Gasket-Rear 2 - 1039279 Seal12 - 1039683 Bearing 1 - 1041229 Seal-Oil 1 - 1070991 Bearing Set 1 - 1074906 Gasket 1 - 1172830 Crankshaft Assembly 1 - 1175015 Seal AssemblyAction Required
For 3046 Engines refer to the Disassembly and Assembly Manual SENR55431.
1. Remove the engine from the chassis.2. Remove the crankshaft assembly.3. Install a new crankshaft assembly and bearings.4. Install oil pump suction tube, oil dipstick tube and oil pan.5. Install engine on dynamometer and check for any leaks or unusual noises.6. Install engine assembly into chassis.7. Fill with 14.5 liters (4 U.S. gallons) of oil.Service Claim Allowances
If it is more economical to replace the engine instead of the crankshaft, appropriate charges will be considered. The above hours for the repair are based on 14 hours to remove and replace the engine and 14 hours to replace the crankshaft.
Parts Disposition
For U.S. dealers to be eligible for this program, broken cranks must be returned to:
Caterpillar Inc.
Service Claims Room
Attn: Dennis Belcher - PS5286
8201 N. University
Peoria, Illinois 61615
Returned parts must be clearly marked with identifying vehicle serial number and any other pertinent claim data.
U.S. dealers should return crankshafts by surface freight using normal method of "return iron" to the address above.
All Other Dealers
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.