Product Support Program For Replacing Turbocharger Cartridge On Certain E200B And EL200B Excavators; CP563 AND CS563 Compactors; and AP1050 Pavers Caterpillar

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.

NOTE: 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 "PS0478" as Part Number, "7755" as Group Number, and "96" as Description Code.

NOTE: This Revised Service Letter replaces the January 21, 1991 Service Letter. A change was made to the Termination Date.

Termination Date

Problem

The compressor side of the turbocharger cartridge may develop oil leaks on certain E200B and EL200B Excavators; CP563 and CS563 Compactors; and AP1050 Pavers. The existing cartridge group may be replaced with a new cartridge group.

Affected Product
Model & Identification Number

E200B (6KF1-611)

EL200B (7DF1-1434)

CP563 (1YJ1-Up)

CS563 (8XF1-Up)

AP1050 (1JG1--Up)

Parts Needed

1 - 7C7431 Gasket

1 - 4P4686 Cartridge Group

1 - 1S7057 Gasket

1 - 7W2398 Gasket

Action Required

The clearance between the compressor wheel and the bearing housing is less on the new cartridge group. The reduced clearance can eliminate the negative pressure behind the compressor wheel. Without the negative pressure, less oil will pass through the ring seal.

If the turbocharger leaks on the compressor side, replace the 7C5624 Cartridge Group with the parts listed using Service Manual disassembly and assembly procedure.

Service Claim Allowances

NOTE: This is a 2-hour job.

Parts Disposition

Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.