TORQUE CONVERTER GP 1512709 - Caterpillar

This Program can be administered eitherbefore or after failure. In either case the decision whether to apply theProgram is made by the dealer. When reporting the repair, use "PS42020"as the Part number and "7755" as the Group Number. If administered beforefailure, use "56" as the Warranty Claim Description Code and use "T" asthe SIMS Description Code. If administered after failure, use "96" as theWarranty Claim Description Code and use "Z" as the SIMS Description Code. The information supplied in this serviceletter may not be valid after the termination date of this program. Donot perform the work outlined in this Service Letter after the terminationdate without first contacting your Caterpillar product analyst.TERMINATION DATE
June 30, 2008PROBLEM
The 218-0426 Press Ring that is responsible forretaining the 2141639/">214-1639 Magnet Ring, has been known to disengage duringmachine operation on certain 988G Wheel Loaders that have been modifiedfor use in a steel mill operation. Once the press ring is disengaged, erroneousposition sensing can occurr. Also, severe internal damage to the positionsensor and/or cylinder assemblies may occurr.AFFECTED PRODUCT
Model Identification Number
988G BNH411, 665, 680, 936, 1009, 1038, 1111, 1317, 1418, 1420, 1461, 1474PARTS NEEDED
Qty
Part Number Description
2 2141639 MAGNET
1 2300915 ROD ASSEMBLY
1 2309985 ROD ASSEMBLY
1 2295549 SEAL KIT
1* 2295546 or 2623721 SEAL KIT
2 2433177 RETAINER-MAGNET* Order the 229-5546 Seal Kit if youhave a 9-Bolt Head cylinder assembly. Order the 262-3721 Seal Kit if youhave a 12-Bolt Head cylinder assembly.ACTION REQUIRED
In order to simplify the process, theexisting cylinder assemblies will be modified by replacing the entire rodin each cylinder utilizing the existing cylinder head, piston and pistonnut. This decision eliminates the need to machine the existing rods inthe field in order to accommodate the new threaded magnet retainer. Performthe following steps below:
Refer to the machine Disassembly and AssemblyManual, RENR2173, for cylinder removal instructions. Remove the 217-6565Lift Cylinder-RH and 217-5072 Tilt Cylinder from the machine.
Refer to Special Instruction, REHS2808,"Process for Removal and Installation of the Position Sensor in the LiftCylinder", for position sensing cylinder assembly and disassembly instructions.Remove the rod assembly from the lift and the tilt cylinder.
Install the 2141639/">214-1639 Magnet and the 243-3177Retainer in the end of each of the new rod assemblies.
Inspect the cylinder head, piston andpiston nut. Replace worn or damaged components.
Install the new 230-0915 Rod Assemblyin 217-5072 Tilt Cylinder. Stamp "XXX-XXXX" over the 217-5072 part numberand stamp 230-7913 under the former part number.
Install the new 230-9985 Rod Assemblyin 217-6565 Lift Cylinder. Stamp "XXX-XXXX" over the 217-6565 part numberand stamp 230-7914 under the former part number.
Install both the lift and tilt cylinderon the machine. Refer to the Disassembly and Assembly Manual, RENR2173,for the complete assembly instructions.
SERVICE CLAIM ALLOWANCES
Product smu/age whichever comes first Caterpillar Dealer Suggested Customer Suggested
Parts Labor Hrs Parts Labor Hrs Parts Labor Hrs
0-10000 100% 16.0 0 0 0 0
This is a 16.0?hr job.PARTS DISPOSITION
Handle the parts in accordance with your WarrantyBulletin on warranty parts handling.