PRODUCT SUPPORT PROGRAM FOR REWORKING THE MASTER PIN PROTRUSION ON CERTAIN 320, 320 GC, AND 323 EXCAVATORS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REWORKING THE MASTER PIN PROTRUSION ON CERTAIN 320, 320 GC, AND 323 EXCAVATORS

Usage:

TEBE7255-01

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09Feb2018

(Revised 22Oct2018)

U-69

A-56

D-67

O-67

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Before/After	PRODUCT SUPPORT PROGRAM FOR REWORKING THE MASTER PIN PROTRUSION ON CERTAIN 320, 320 GC, AND 323 EXCAVATORS
4169 4171		PS45785

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NOTE:

Caterpillar’s obligations under this Service Letter are subject to, and shall not apply in contravention of, the laws, rules, regulations, directives, ordinances, orders, or statutes of the United States, or of any other applicable jurisdiction, without recourse or liability with respect to Caterpillar.

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 "PS45785" 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:

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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NOTE:	This Revised Service Letter replaces the 09Feb2018 Service Letter. Changes have been made to the Affected Product.

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TERMINATION DATE

29Feb2020

PROBLEM

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The existing 6Y-8185 Track Master Pin can have inconsistent protrusion on certain 320, 320 GC, and 323 Excavators.

AFFECTED PRODUCT

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Model	Identification Number
320	HEX00111-00112, 115-120, 122-200, 202-2712, 2714-2745, 2747-2775, 2780-2800, 2802-2822, 10001, 10003-10004
320 GC	KTN00103-00105, 107-595, 597-603, 607-623, 10001-10012
323	RAZ00121, 123-153, 155-170, 172-1220, 1222-1335, 1337-1370, 1372-1402, 1404-1416, 1418-1428, 1430-1434, 10001-10004, 10007-10008, 10010-10028, 10030-10035

PARTS NEEDED

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Qty	Part Number	Description
2	6Y8185	PIN-TRACK (After Failure Only)
1	9W3137	LINK-TRACK (RH) (After Failure Only)
1	9W3138	LINK-TRACK (LH) (After Failure Only)
4	1584381	SEAL-TRK(MASTER) (After Failure Only)
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 7% 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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Rework the master pin protrusion. Refer to the attached Rework Procedure.

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SERVICE CLAIM ALLOWANCES

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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%
0-1500 hrs, 0-12 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%

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NOTE: This is a 2.0-hour job
Note: 2.0 hours labor is allowed per one side.

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PARTS DISPOSITION

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

Rework Procedure

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NOTE: Ensure that all safety information, warnings, and instructions are read and understood before any operation or any maintenance procedures are performed. Refer to the Operation and Maintenance Manual "Safety Section".

Refer to the Service Manual if/as necessary.

1. Park the machine on a hard level surface, and ground the bucket/tool. Refer to the Operation and Maintenance Manual.

2. Stop the engine and lock the hydraulic lockout control. Ensure that all residual pressure is removed. Refer to Disassembly and Assembly, "System Pressure Release", for additional information.

3. Check the 6Y-8185 Track Master Pin protrusion. Refer to Image1.3.1.

Image1.3.1

4. If the track master pin protrusion does not meet the specification 2.7mm +/- 0.7mm, adjust the protrusion. Refer to the Disassembly and Assembly, "Track - Separate and Connect", for additional information.

5. If the 158-4381 Track Master Seal and/or the link is damaged, replace with new one(s). Refer to the Disassembly and Assembly, "Track - Separate and Connect", for additional information.

6. If the pin insert force is lower than 130kN, replace the track master pin and the track link with new ones.