PRODUCT SUPPORT PROGRAM FOR INSPECTING AND/OR REPLACING SWIVEL BOOT ON CERTAIN 365C L, 365C L MH, 365C L FS AND 365C OEM HYDRAULIC EXCAVATORS Caterpillar

PRODUCT SUPPORT PROGRAM FOR INSPECTING AND/OR REPLACING SWIVEL BOOT ON CERTAIN 365C L, 365C L MH, 365C L FS AND 365C OEM HYDRAULIC EXCAVATORS [REBE4023]

FRAME AND BODY

GEAR & BEARING GP

PRODUCT SUPPORT PROGRAM FOR INSPECTING AND/OR REPLACING SWIVEL BOOT ON CERTAIN 365C L, 365C L MH, 365C L FS AND 365C OEM HYDRAULIC EXCAVATORS

REBE4023-00

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01Jul2008

U-349

A-283

D-286

O-317

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*Before/After*	PRODUCT SUPPORT PROGRAM FOR INSPECTING AND/OR REPLACING SWIVEL BOOT ON CERTAIN 365C L, 365C L MH, 365C L FS AND 365C OEM HYDRAULIC EXCAVATORS
5060 7063		PS42738

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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 "PS42738" 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 AVSpare product analyst.

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TERMINATION DATE

31Jul2010

PROBLEM

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The existing 7y1106 Boot can fail on certain 365C Excavators due to possible misalignment of swivel and swing bearing axis. Excessive misalignment may imply breakage of the swivel boot which will allow contamination of the swing bearing grease box and possible premature wear of the swing gear.

AFFECTED PRODUCT

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Model	Identification Number
*****Group 1*****
365C L	ELC00156-00274 MCS00178-00191, 193-425 MCY00185-00339 MEM00171-00274
365C L FS	PAR00250-00264
365C L MH	GWC00226-00228

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*****Group 2*****
365C L OEM	GSZ00101-00103, 116-117
CIPI	0EM01312-01313, 1397, 1417, 1479, 1674-1675, 1682, 1960-1961, 1972-1973

PARTS NEEDED

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Qty	Part Number	Description
*****Group 1*****
1	7Y1106	BOOT (If Required)
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.
*****Group 2*****
1	7Y1106	BOOT (If Required)
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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Check the runout between swivel and swing bearing. If the runout is equal or more then 4 mm (runout), the cover assembly supporting the swivel has to be reworked and swivel boot must be replaced.
The following procedure explains how to measure the runout and rework the cover assembly to fix the problem when needed.

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SERVICE CLAIM ALLOWANCES

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Product smu/age whichever comes first	AVSpare		Dealer Suggested		Customer Suggested
Product smu/age whichever comes first	Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
*****Group 1*****
0-6000 hrs, 0-36 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%
6001-10000 hrs, 37-60 mo	33.0%	50.0%	0.0%	0.0%	50.0%	50.0%

NOTE: This is a 0.5-hour job for Group 1
Note: 0.5 hour is allowed for the inspection of the swivel runout. An additional 10 hours will be allowed for reworking the cover assembly and replacing the boot. 4 hours are included in these 10 hours for template fixture fabrication labor

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Product smu/age whichever comes first	AVSpare		Dealer Suggested		Customer Suggested
Product smu/age whichever comes first	Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
*****Group 2*****
0-6000 hrs, 0-36 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%
6001-10000 hrs, 37-60 mo	33.0%	50.0%	0.0%	0.0%	50.0%	50.0%

NOTE: This is a 0.5-hour job for Group 2
Note: 0.5 hour is allowed for the inspection of the swivel runout. An additional 10 hours will be allowed for reworking the cover assembly and replacing the boot. 4 hours are included in these 10 hours for template fixture fabrication labor

PARTS DISPOSITION

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

Rework Procedure

Runout measurement:
Runout between 2 boot retainers on frame and swivel must be measured on a full swing frame rotation (see Image 1.1.1). This gives the alignment error between swing bearing axis and swivel axis (see Image 1.1.2).
If runout is less then 4 mmn, no additional action is needed.
If runout is equal or greater then 4 mm the cover assembly must be reworked and swivel boot must be replaced.
Follow the procedure below.

Image1.1.1

Image1.1.2

Check the boot. If the boot is cracked, please check swing bearing grease box for contamination. In case of contamination and swing gear wear, contact Hydraulic Excavator Product Support, Olivier Dufour at Dufour_Olivier @ cat.com for further instructions.

Runout equal or greater then 4 mm:
Procedure to rework the cover assembly.
The cover assembly is welded on the carbody ring.
Fabricate the template fixture as shown in Image 1.2.1.
Swing the machine in order to align track roller frames and upper frame correctly.
Track motor must be at the rear of the machine in this aligned position.
Remove swing drives, swing drive lines, swivel, swivel lines and boot. Follow your Disassembly and Assembly manual to proceed.

Image1.2.1

Attach the template fixture on the boot bolt pattern on the bottom plate of the upper frame with three 8t4195 Bolts M10x1.5 used to attach the boot on the bottom plate of the upper frame.
Take care to place the template in the FRONT direction of the upper frame. See FRONT of template on Image 1.2.1. See boot bolt pattern on upper frame seen from the top
on Image 1.3.2.
Tighten these 3 bolts to a torque of 55 +/- 10 N.m.(See Image 1.3.1).

Image1.3.1

Image1.3.2

The 5 holes dia. 18 mm are the guides to drill the correct bolt pattern on the
cover assembly which is just below on the carbody.
Drill the 5 holes dia 18 mm into the cover assembly using the template fixture to position the drill bit correctly (see Image 1.4.1).

Image1.4.1

Grind the central hole of the cover to avoid interference with new correct bolt pattern (See Image 1.5.1) using the central hole of the template fixture as a guide.

Remove template fixture, reassemble new boot, swivel, swivel lines, swing drives and swing drive lines following your assembly manual.