PRODUCT IMPROVEMENT PROGRAM FOR REWORKING THE 1T-2083 TORQUE CONVERTER ON CERTAIN D7R SERIES II, D7R XR SERIES II, AND D7R LGP SERIES II TRACK-TYPE TRACTORS Caterpillar

PRODUCT IMPROVEMENT PROGRAM FOR REWORKING THE 1T-2083 TORQUE CONVERTER ON CERTAIN D7R SERIES II, D7R XR SERIES II, AND D7R LGP SERIES II TRACK-TYPE TRACTORS

Usage:

REBE2495-00

Show/hide table

02Nov2007

U-554

A-454

D-450

O-482

Show/hide table

*Priority*	PRODUCT IMPROVEMENT PROGRAM FOR REWORKING THE 1T-2083 TORQUE CONVERTER ON CERTAIN D7R SERIES II, D7R XR SERIES II, AND D7R LGP SERIES II TRACK-TYPE TRACTORS
3101		PI31389

Show/hide table

NOTE:

This Program must be administered as soon as possible. When reporting the repair, use "PI31389" as the Part Number and "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 "PI31389" as the Part Number, "7751" as the Group Number, "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.

Show/hide table

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.

Show/hide table

COMPLETION DATE	TERMINATION DATE
31May2008	30Nov2008

PROBLEM

Show/hide table

The 1T-2083 Torque Converter needs to be reworked on certain D7R Series II, D7R XR Series II, and D7R LGP Series II Track-Type Tractors. The existing 179-9579 Bearing can fail prematurely resulting in damage to the torque converter and contamination of the power train oil system.

AFFECTED PRODUCT

Show/hide table

Model	Identification Number
D7R II	AEC01500-01812
D7R II LGP	ABJ01500-01606
D7R II XR	AGN01500-01780

PARTS NEEDED

Show/hide table

Qty	Part Number	Description
8	0S1588	BOLT
1	1T0069	RING-METAL SEAL
1	1T2070	RETAINER-BEARING
1	1T2095	CARRIER AS.
6	4H1440	PIN-SPRING
8	5M2894	WASHER-HARD
1	9H0846	SEAL-O RING
1	1362216	SEAL-LIP TYPE
1	3049651	BEARING-SPL BALL

ACTION REQUIRED

Show/hide table

Reference RENR5626 "Dissassembly and Assembly for D7R Series II Track-Type Tractors Power Train" for detailed steps in performing this rework.

1. Remove the torque converter from the machine.
2. Remove the planetary carrier from the torque divider.
3. Remove the torque converter from the housing.
4. Remove the center shaft from the torque converter.
5. Remove the impeller assembly from the rotating housing.
6. Remove stator assembly from the impeller assembly.
7. Remove carrier assembly from the impeller.
8. Remove dowel retaining the outer race of the 179-9579 Bearing to the impeller
9. Remove bearing retainer and bearing from the impeller
10. Check the clearance between the impeller and stator and the turbine and stator.
11. Install the 304-9651 Bearing into the new 1T-2070 Retainer.
12. Install the bearing and retainer into the impeller.
13. Install dowel between outer race of bearing and impeller.
14. Bolt bearing retainer to impeller.
15. Install seal ring and spring pins onto the 1T-2095 Carrier Assembly.
16. Install carrier into impeller assembly.
17. Install stator onto carrier assembly.
18. Install impeller onto rotating housing.
19. Reinstall torque converter shaft.
20. Reinstall the torque converter into housing.
Note: The 0S-1588 Bolts must be used because the 1T-2095 Carrier Assembly has standard threads.
21. Reinstall torque divider planetary.
22. Install the torque converter assembly into the machine.

Show/hide table

OWNER NOTIFICATION

Show/hide table

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

SERVICE CLAIM ALLOWANCES

Show/hide table

Caterpillar		Dealer Suggested		Customer Suggested
Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
100%	100%	0%	0%	0%	0%

Show/hide table

NOTE: This is a 24.0-hour job

Show/hide table

PARTS DISPOSITION

Show/hide table

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

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

Show/hide table

COPY OF OWNER NOTIFICATION FOR U.S. AND CANADIAN OWNERS

XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999

PRIORITY - PRODUCT IMPROVEMENT PROGRAM FOR REWORKING THE 1T-2083 TORQUE CONVERTER ON D7R SERIES II, D7R XR SERIES II, AND D7R LGP SERIES II TRACK-TYPE TRACTORS

MODELS INVOLVED - D7R Series II, D7R XR Series II, AND D7R LGP Series II Track-type Tractors

Dear Caterpillar Product Owner:

The torque converter needs to be reworked on the products listed below. The existing 179-9579 Bearing can fail prematurely resulting in damage to the torque converter and contamination of the power train oil system. You will not be charged for the service performed.

Contact your local Caterpillar dealer immediately to schedule this service. The dealer will advise you of the time required to complete this service.

Please refer the dealer to their Service Letter dated 02Nov2007 when scheduling this service.

We regret the inconvenience this may cause you, but urge you to have this service performed as soon as possible to prevent unscheduled downtime.

Caterpillar Inc.

Identification #(s)

Attached to 02Nov2007 Service Letter