PRODUCT SUPPORT PROGRAM FOR REPLACING MASTER LINKS ON CERTAIN D11T, D11R, AND D11N TRACK-TYPE TRACTORS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REPLACING MASTER LINKS ON CERTAIN D11T, D11R, AND D11N TRACK-TYPE TRACTORS

Usage:

REBE8465-01

Show/hide table

12Feb2013

(Revised 26Feb2013)

U-51

A-40

D-45

O-49

Show/hide table

*After Failure Only*	PRODUCT SUPPORT PROGRAM FOR REPLACING MASTER LINKS ON CERTAIN D11T, D11R, AND D11N TRACK-TYPE TRACTORS
4150 4169 4170 4176 4171		PS52391

Show/hide table

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 "PS52391" as the Part Number and "7755" as the Group Number. Use "96" as the Warranty Claim Description Code and use "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


NOTE:	This Revised Service Letter replaces the 12Feb2013 Service Letter. Changes have been made to the Affected Product and Rework Procedure Image1.3.2.

Show/hide table

TERMINATION DATE

28Feb2015

PROBLEM

Show/hide table

The existing master links may develop fatigue cracks at the root of the 1st tooth or in the bushing strap transition area. Failure of the master links may result in less than acceptable service life being achieved on certain D11T, D11R, and D11N Track-Type Tractors.

AFFECTED PRODUCT

Show/hide table

Model	Identification Number
D11N	4HK00361-00635, 75001-75008, 78001 74Z00188, 235-1152, 2631, 5277, 75235-75278, 75280, 75282-75290, 75293-75302, 75727, 77001
D11R	7PZ00002, 286-1705, 50013, 75001-75028, 75030-75044, 75046-75047, 75050, 77001 8ZR00297-00471, 75001-75006 9TR00197-00473, 75002-75004, 75006, 76001-76005, 76007
D11R CD	9XR00149-00189, 75001-75002 AAF00132-00290, 75001-75004, 75006-75008, 75010
D11T	AMA00140-00485 GEB00161-01021 JEL00153-00314 JNS00130-00133 MDG00160-00169
D11T CD	TPB00160-00211

PARTS NEEDED

Show/hide table

Qty	Part Number	Description
1	5P3931	COMPOUND-THREAD
1	3537393	LINK-BUSH END RH
1	3537394	LINK-BUSH END LH
1	3586555	LINK-PIN END RH
1	3586556	LINK-PIN END LH
2	3602472	BOLT-TRK MASTER
2	3602473	BOLT-TRK MASTER
1	3602872	SHOE-TRK MASTER - (AS REQUIRED)
1	3602873	SHOE-TRK MASTER - (AS REQUIRED)
1	3602874	SHOE-TRK MASTER - (AS REQUIRED)
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 5% 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

Show/hide table

Caterpillar will participate to assure acceptable master link performance as long as certain guidelines and criteria are met. This program is intended to address dealer and user concerns for failures on machines operating in normal applications, equipped with proper track shoes, and not being abused.

Show/hide table

SERVICE CLAIM ALLOWANCES

Show/hide table

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%
0-6000 hrs, 0-36 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%

Show/hide table

NOTE: This is a 8.0-hour job If there has been a previous repair, part age/hours will apply. Retain a copy of the previous repair invoice in the dealer's records for audit purposes, and specify repair date and machine hours in the "Additional Comments" section of the warranty claim.
NOTE: Parts Needed and Service Claim Allowances are for one track. NOTE: An additional 0.5 hour per track is allowed to modify a standard track shoe in to a Joint 2 shoe, if required. NOTE: No labor allowed if replacing master links at bushing turn or reseal. NOTE: Bushing turn or reseal will be considered a complete track disassembly. At bushing turn or reseal, no participation for track seals, rubber stoppers, plastic facing rings, retaining rings (PPR), thrust rings, or plastic plugs will be considered for master joints since they are considered normal customer expense at bushing turn or reseal.

Show/hide table

PARTS DISPOSITION

Show/hide table

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

Rework Procedure

Show/hide table

Repair master joints at the dealer track shop using the Shop Repair Procedure for Positive Pin Retention Track SEBF8546 and Shop Disassembly and Assembly of Single Tooth Master Links SEBF8621 for proper repair procedures. Use Guideline for Reusable Track Parts SEBF8558 to determine the necessary parts to replace.

After repairing the master joints at the dealer track shop, the tracks should be returned with new master link bolts, thread compound, and proper instructions for installing the tracks on the machine. Use the following procedure to install the master link bolts when the tracks are installed on the machine:

1. Use compressed air and, if necessary, a pick to clean all dirt, debris, paint, and rust from the tooth profile and bolt holes in each split master link.
2. Clean the threads in the master links of dirt and debris using 423-8713 M36 x 4 thd tap.
3. The mating surfaces of both the pin and bushing end master link halves will become fully engaged with one another. There must be no more than 2.0 mm (0.079 inch) of misalignment between the sides of the forged surfaces of the pin and bushing end master link halves. If there is more than 2.0 mm (0.079 inch) of misalignment, the misalignment must be corrected before proceeding.
4. Apply 5P-3931 compound on the threads, body, and washer face of each master bolt before installation.
5. Install the master link track shoe.
6. Install the bolts in order to hold the master links together. Best practice is to start the bolts BY HAND to avoid cross threading. If the bolts do not turn freely, the binding or misalignment must be corrected before proceeding.
7. The new bolts use an M55 socket (136-5189). Pre-tighten all bolts to a torque of 1500 +/- 150 N?m (1100 +/- 110 lb ft) in the pattern shown in Image 1.1.1. Then turn each bolt an additional 90? +/- 5? using the same pattern. NOTE: To ensure proper master link life and bolted joint integrity, the specific torque plus turn must be properly followed.

Image1.1.1

The track shoes used with the new single tooth master links have changed. The new single tooth master link shoe (shoe B) has a different bolt hole diameter and pattern than the former master shoe. Also, the shoe adjacent to the bushing end master links (shoe C) has wider mud notches than the other standard track shoes (shoe A) to prevent interference with the wider single tooth master links (link D). This shoe is referred to as the Joint 2 shoe. See Image 1.2.1.