Product Improvement Program For Replacing The Pump Coupling On Certain 385C, 385C FS, 385CL, And 385CL MH Excavators Caterpillar

Product Improvement Program For Replacing The Pump Coupling On Certain 385C, 385C FS, 385CL, And 385CL MH Excavators [REBE1436]

HYDRAULIC SYSTEM

COUPLING GP

Product Improvement Program For Replacing The Pump Coupling On Certain 385C, 385C FS, 385CL, And 385CL MH Excavators

REBE1436-00

Show/hide table

17Nov2006

U-745

A-712

D-698

O-726

Show/hide table

Priority Parts stock action needed	PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE PUMP COUPLING ON CERTAIN 385C, 385C FS, 385CL, AND 385CL MH EXCAVATORS
5062 3252		PI31190

Show/hide table

NOTE:

This Program must be administered as soon as possible. When reporting the repair, use "PI31190" 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 "PI31190" 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 AVSpare product analyst.

Show/hide table

COMPLETION DATE	TERMINATION DATE
31May2007	30Nov2007

PROBLEM

Show/hide table

The 222-8374 and 266-6305 Pump Couplings need to be replaced on certain 385C, 385C FS, 385CL, and 385CL MH Excavators. The pump coupling can fail at spring tip causing engine rear gear train failure. The pump coupling needs to be replaced with the 196-8133 Pump Coupling.

AFFECTED PRODUCT

Show/hide table

Model	Identification Number
385C	JCM00175-00176 KBC00201-00240 KKK00123-00143
385C FS	EAM00264-00269 MMA00245-00252 T2F00181-00188
385CL	EDA00189-00258, 260-366 KGB00275-00297, 299-305, 308, 310 SBE00168-00209 T2E00291-00341
385CL MH	WAW00211-00215
CIPI	0EM01404, 1539, 1839, 1887, 1891

PARTS NEEDED

Show/hide table

Qty	Part Number	Description
1	1968133	COUPLING GP-BSC
1	3P0658	SEAL-O-RING
1	6V5043	SEAL-O-RING
1	6V5049	SEAL-O-RING
8	8T4835	BOLT

ACTION REQUIRED

Show/hide table

****Parts Stock ****

Remove all pump coupling 266-6305 from dealer parts stock.

****Affected Product****

Show/hide table

Follow your Disassembly and Assembly Manual to remove and replace the existing pump coupling with a new one. Correct installation of the pump coupling is with bolt head toward the flywheel side to leave more gap.

Show/hide table

OWNER NOTIFIAVSION

Show/hide table

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

SERVICE CLAIM ALLOWANCES

Show/hide table

****Parts Stock****

Submit one claim for all parts removed from dealer parts stock.

****Affected Product****

Show/hide table

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

NOTE: This is a 20.0-hour job

PARTS DISPOSITION

****Parts Stock****

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

****Affected Product****

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

Show/hide table

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

XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999

PRIORITY - 385C pump coupling change

MODELS INVOLVED - 385C - 385CL - 385CL MH - 385C FS

Dear AVSpare Product Owner:

New pump coupling 196-8133 need to be installed on the products listed below. Previous pump coupling 266-6305 and 222-8374 experience spring tip failure that migth damage the engine rear gear train, putting machine down. You will not be charged for the service performed..

Contact your local AVSpare 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 17Nov2006 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.

AVSpare Inc.

Identification #(s)

Attached to 17Nov2006 Service Letter

Rework Procedure

Refer to the 385B Service Manual (RENR5407) "Remove and Install Main Hydraulic Pumps" in order to access the coupling group.

Remove the flywheel and check the rear gear train. If the gears are damaged, replace all damaged parts, before installing the new coupling.

Reinstall the flywheel according to the disassembly and assembly procedure.

1. Clean and dry all parts of the new coupling.

2. Apply sealant on the 8T-4835 Mounting Bolt for the coupling. Recommended sealant for mounting bolt is Loctite Product 270 or 271.

Image1.3.1

3. Install the 196-8133 Coupling Group to the flywheel. Bolt tightening torque is 135 +/- 20Nm. Please take care the direction of coupling installation, and make sure to assemble the coupling so that the bolt head of coupling faces to flywheel side.

4. Reuse the 233-1155 Tube Assembly and pump mounting bolts. Do not reuse the existing main hydraulic pump housing seals, install one each of a 6V-5043, 3P-0658, 6V-5049 O-Ring Seals.

5. Install the hydraulic pump, and tighten the pump flange mounting bolt to 70 +/- 15Nm.

6. Fill hydraulic tank and engine with oil.

7. Before starting the engine to avoid cavitation that could cause serious damage to the pumps, refer to RENR5405, Test & Adjust "Main Hydraulic Pump Air - Purge" procedure to eliminate any air that may be trapped.

8. Start the engine and check oil level of hydraulic tank and engine again. Check any leakage and abnormal noise.

Addendum: At Engine overhaul, replace Pump Coupling Springs as a normal overhaul procedure.