Drill Oil Passage In Retarder Housing Needs To Be Drilled To The Correct Size On Certain 627F And 637E Wheel Tractor Scrapers Caterpillar

NOTE: This Program must be administered as soon as possible. When reporting the repair, use "PI3258" as the Part Number, "7751" as the Group Number, "56" as the Warranty Claim Description Code and "T" as the SIMS Description Code. Exception: If the repair is done after failure, use "PI3258" as the Part Number, "7751" as the Group Number, "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.

Completion Date

Termination Date

Problem

The oil drain hole in the retarder may not have been drilled to correct dimension on certain 627F and 637E Wheel Tractor Scrapers. If the passage is not the correct size, oil in the retarder valve group will not drain off.

Affected Product
Model & Identification Number

627F (1DL541, 1DL542, 1DL548, 1DL570, 1DL584, 1DL585, 1DL589, 1DL590, 1DL598, 1DL602, 1DL604, 1DL606, 1DL607, 1DL608, 1DL611, 1DL612, 1DL613, 1DL614)

637E (1FB744, 1FB747, 1FB749, 1FB750, 1FB751, 1FB753, 1FB755, 1FB756, 1FB757)

Parts Needed

Dealers will need to order parts for this Program.

1 - 8M4431 SEAL-O-RING

2 - 8M4987 SEAL-O-RING

1 - 8M5010 SEAL-O-RING

1 - 8M8281 SEAL-O-RING

1 - 9M7539 SEAL-O-RING

Action Required

See the attached procedure.

Owner Notification

U.S. and Canadian owners will receive the attached Owner Notification.

Service Claim Allowances

NOTE: This is a 5-hour job.

NOTE: U.S. and Canadian Dealers Only - Eligible dealers may enter a Type 2 SIMS Report.

Parts Disposition

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

NOTE: MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM AS SOON AS POSSIBLE.

Attach.

(1-Owner Notification)

(2-Rework Procedure)

Copy Of Owner Notification For U.S. And Canadian Owners

Rework Procedure

Refer to Service Manual as necessary. Take all necessary precautions to immobilize vehicle.

Remove scraper retarder control valve group (2P5802 Valve Group).

Refer to manual instructions as necessary.

Refer to drawing 1 for location of hole.

Use a 4.8mm drill bit that has a flute length of 180mm that will allow filings to discharge. Place a magnet (preferably circular) around the drill hole.

Complete the drill hole until it intersects with the oil gallery in the case. Regularly clear the filings by withdrawing the drill until the passage is completed. A small amount of grease can be applied to the drill bit to retain filings

Refer Illustration 2. The correct dimension for depth of the hole is 180mm (minimum)

Clean away any filings.

Install the retarder valve.

Illustration 1

Illustration 2