PRODUCT SUPPORT PROGRAM FOR REPLACING DIFFERENTIAL COVER RETAINING RINGS ON CERTAIN PS-150B, PS-150C, AND PS-200B PNEUMATIC COMPACTORS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REPLACING DIFFERENTIAL COVER RETAINING RINGS ON CERTAIN PS-150B, PS-150C, AND PS-200B PNEUMATIC COMPACTORS

Usage:

REBE3259-00

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22Jan2008

U-42

A-37

D-34

O-38

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Before/After Parts stock action needed	PRODUCT SUPPORT PROGRAM FOR REPLACING DIFFERENTIAL COVER RETAINING RINGS ON CERTAIN PS-150B, PS-150C, AND PS-200B PNEUMATIC COMPACTORS
3278 3284 3258 3283		PS42607

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NOTE:

This Program must be administered either before or after failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS42607" as the Part Number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and "T" as the SIMS Description code. If administered after failure, use "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.

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NOTE:

Although this Program is to be administered as described above on the Affected Product, parts should be removed form parts stock as soon as possible.

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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.

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TERMINATION DATE

31Jan2009

PROBLEM

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The existing retaining ring can disengage from the ring groove on certain PS-150B, PS-150C, and PS-200B pneumatic compactors. If the ring disengages from the groove the differential cover will leak hydraulic fluid.

AFFECTED PRODUCT

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Model	Identification Number
PS-150B	3XR00624-00804
PS-150C	FPS00150-00714
PS-200B	5JR00393-00487

PARTS NEEDED

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Qty	Part Number	Description
4	9X7683	SEAL-O RING
4	3134918	RING-RETAINING
In Order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 9% of dealership population. This is an initial order recommendation only, and the ultimate responsibility for ordering the total number of parts needed to satisfy the program lies with the dealer.

ACTION REQUIRED

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****Parts Stock ****

Remove all 1368638 Retaining Rings from dealer parts stock.

****Affected Product****

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Replace the 1368638 Retaining Ring with the improved 3134918 Retaining Ring. Replace the 9X7683 Seal if the cover has been dislodged or is leaking. Use sufficient o-ring lubrication on the seal before reinstalling into the housing. Do not remove the cover if only replacing the retaining ring.

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SERVICE CLAIM ALLOWANCES

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****Parts Stock****

Submit one claim for all parts removed from dealer parts stock.

****Affected Product****

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Product smu/age whichever comes first	Caterpillar		Dealer Suggested		Customer Suggested
Product smu/age whichever comes first	Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
0-2000 hrs	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%

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NOTE: This is a 2.0-hour job

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PARTS DISPOSITION

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****Parts Stock****

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

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****Affected Product****

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

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Rework Procedure

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Inspect all four differential covers for leaking to determine which covers must be removed to replace the seal. Any cover that has moved because the retaining ring is missing or failed should have the seal replaced in addition to the retaining ring. Any leaking cover should be removed to replace the seal. If the retaining ring is seated in the groove and no leaks are observed, do not remove the cover. Replace only the retaining ring.

Use this procedure for a differential requiring removal of the cover to replace the seal.

1. Disconnect and cap supply and return lines to the differential in order to drain the differential. May disconnect upper hose either at the differential or most accessible location.
2. Drain the differential from the lower hose fitting (4) in image 1.1.1 or drain plug on the cover. Use a suitable container to collect oil from the differential.
3. Remove cover and replace seal 9X7683. Coat seal with o-ring lube around entire circumference of cover.

Image1.1.1

4. Confirm thrust button (6) in image 1.2.1 is intact and in the cover center. Refer to KENR7076 "Remove and Install Axle."
5. Install cover and retaining ring. See Image 1.3.1 for further detail.
6. Reattach hoses to the differential and tighten hose at the tank.
7. Replace hydraulic oil as required.

Image1.2.1

For differentials requiring only retaining ring replacement.

1. Relieve hydraulic pressure on the differential by loosening the supply hose fitting. This may be accomplished either at the differential or most accessible location.

2. Tap cover inwards slightly to relieve pressure on the retaining ring.

3. Remove and replace retaining ring with 3134918 ring.

4. Confirm the retaining ring is fully seated into the groove and the ring ends are not binding. See image 1.3.1. If the ring is not fully seated into the groove, file one end to allow the ring to fit. Gap between the ring ends must be maintained as minimal as possible.

5. Tighten hose used to relieve pressure.