PRODUCT IMPROVEMENT PROGRAM FOR REMOVING TWO PLUGS FROM THE HYDRAULIC OIL COOLER FAN MOTOR ON CERTAIN 385C EXCAVATORS Caterpillar

PRODUCT IMPROVEMENT PROGRAM FOR REMOVING TWO PLUGS FROM THE HYDRAULIC OIL COOLER FAN MOTOR ON CERTAIN 385C EXCAVATORS

Usage:

REBE1200-01

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07Nov2006

(Revised 23Oct2007)

U-716

A-688

D-673

O-700

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*Priority*	PRODUCT IMPROVEMENT PROGRAM FOR REMOVING TWO PLUGS FROM THE HYDRAULIC OIL COOLER FAN MOTOR ON CERTAIN 385C EXCAVATORS
1386		PI31179

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NOTE:

This Program must be administered as soon as possible. When reporting the repair, use "PI31179" 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 "PI31179" as the Part Number, "7751" as the Group Number, "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 07Nov2006 Service Letter. Changes have been made to the Affected Product and Rework Procedure.

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COMPLETION DATE	TERMINATION DATE
31May2007	30Nov2007

PROBLEM

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Two plugs need to be removed from the hydraulic oil cooler fan motor on certain 385C Excavators. The existing 4B-3665 Bearings can fail due to lack of lubrication of the fan drive shaft.

AFFECTED PRODUCT

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Model	Identification Number
385C	JCM00175-00176 KBC00201-00240 KKK00123-00140
385C FS	EAM00264-00269 MMA00245-00250 T2F00181-00188
385C OEM	MSF00101-00102, 104
385CL	EDA00189-00347 KGB00275-00294 SBE00168-00205 T2E00291-00341
385CL MH	WAW00211-00214
CIPI	0EM01404, 1539, 1839, 1887, 1891

PARTS NEEDED

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Qty	Part Number	Description
2	4B3665	BEARING-BALL
1	4M0189	SEAL-O RING
2	8T4194	BOLT
1	1373751	SEAL-LIP TYPE
1	1398753	LOCKWASHER

ACTION REQUIRED

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Removing the two 137-3780 Plugs from the hydraulic oil cooler fan motor insures proper lubrication of the drive shaft. The two existing 4B-3665 Bearings need to be replaced with two new 4B-3665 Bearings. Refer to the attached Rework Procedure.

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OWNER NOTIFICATION

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

SERVICE CLAIM ALLOWANCES

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

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NOTE: This is a 2.0-hour job

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PARTS DISPOSITION

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

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

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

XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999

PRIORITY - PRODUCT IMPROVEMENT PROGRAM FOR REMOVING TWO PLUGS FROM THE HYDRAULIC OIL COOLER FAN MOTOR

MODELS INVOLVED - 385C EXCAVATORS

Dear Caterpillar Product Owner:

Two plugs need to be removed from the hydraulic oil cooler fan motor on the products listed below. The existing 4B-3665 Bearings can fail due to lack of lubrication of the fan drive shaft. 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 07Nov2006 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 07Nov2006 Service Letter

Rework Procedure

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1) Put air vacuum tooling on the hydraulic tank.
2) Remove the 236-9401 Cover.

Image1.1.1

3) Remove the 225-4614 or 200-3252 Hydraulic Oil Cooler Fan Motor.
4) Clean the 209-6063 Shaft and remove the two 137-3780 Plugs.

Image1.2.1

5) Remove the top fan guard.
6) Remove the fan fixed to the fan drive.
7) Take out the 200-3313 Fan Drive.
8) Remove and replace the two 4B-3665 Bearings by removing the two 6V-5590 and 095-7424 Rings.
9) Clean and lube before reassembly.
10) Change the 137-3751 and 4M-0189 Seal.
11) Reassemble fan and fan drive using three 8T-4139 Bolts and a new special folded 139-8753 Lockwasher. Tighten to a torque of 100 +/-20 Nm.
12) Fix fan drive and motor using two NEW 8T-4194 Bolts and 8T-4223 Washers. Tighten to a torque of 100 +/-20 Nm.
13) Fix the fan guard using five 8T-4195 Bolts and 7X-7729 Washers. Tighten to a torque of 55 +/-10 Nm.
14) Fix the 236-9401 Cover six 135-8573 Bolts. Tighten to a torque of 100 +/-20 Nm.
15) Remove the air vacuum tooling.