PRODUCT IMPROVEMENT PROGRAM FOR REWORKING THE CAB HARNESS ON CERTAIN 336E AND 349E EXCAVATORS Caterpillar

PRODUCT IMPROVEMENT PROGRAM FOR REWORKING THE CAB HARNESS ON CERTAIN 336E AND 349E EXCAVATORS

Usage:

REBE7659-00

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28Oct2011

U-471

A-386

O-417

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*Priority*	PRODUCT IMPROVEMENT PROGRAM FOR REWORKING THE CAB HARNESS ON CERTAIN 336E AND 349E EXCAVATORS
1408 7301		PI31943

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NOTE:

This Program must be administered as soon as possible. When reporting the repair, use "PI31943" 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 "PI31943" 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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COMPLETION DATE	TERMINATION DATE
30Apr2012	31Oct2012

PROBLEM

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The cab harness needs to be reworked on certain 336E and 349E Excavators. The existing cab harness can open circuit.

AFFECTED PRODUCT

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Model	Identification Number
336E L	BZY00135-00795, 797-810 YCE00191-00196 YEP00124-00224
349E L	MPZ00206-00338 TFG00211-00407
349E LC-VG	DGE00228-00259 KCN00191-00221

PARTS NEEDED

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No parts needed for this program

ACTION REQUIRED

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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 1.0-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 REWORKING THE CAB HARNESS ON CERTAIN EXCAVATORS

MODELS INVOLVED - 336E and 349E Excavators

Dear Caterpillar Product Owner:

The cab harness needs to be reworked on the products listed below. The existing cab harness can open circuit. 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 28Oct2011 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 28Oct2011 Service Letter

Rework Procedure

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Flowchart for the Rework Procedure

Image1.1.1

1. Turn off the battery disconnect switch. The battery disconnect switch is located inside the service door at the left front part of the machine. Refer to Image1.2.1.

Image1.2.1

2. The machine ECM harness is located behind the driver?s seat. Remove the 5 screws M6 (L=13) 128-2135, M6 (L=16) 128-2136 and remove covers 327-6486 and 327-6487. Refer to Image1.3.1. Machine ECM harness can be confirmed after the cover is removed. Refer to Image1.3.2.

Image1.3.1

Image1.3.2

3. Please confirm the four items as follows. Refer to Image1.4.1.

(1) Confirm fuse base harness is rear side of machine ECM harness.
(2) Confirm harness green tape position is fixed above ladder clip by strap cable.
(3) Confirm harness is tightly fixed by strap and not loose.
(4) Confirm harness does not interfere with machine ECM or ECM bracket.

(Case 1) If four items are not applied, please rework. Proceed to Step 4.

(Case 2) If four items are applied, skip Steps 4-13 and proceed to Step 14.

Image1.4.1

4. Remove the black and brown ECM Machine connectors. Refer to Image1.5.1.

Image1.5.1

5. Remove the bracket supporting the service connector. Refer to Image1.6.1.

Image1.6.1

6. Cut the strap cable fixed to the ladder clip. Refer to Image1.7.1.

Image1.7.1

7. Inspect all loose harnesses for wire damage. Refer to Image1.8.1.

The damage level of the harness is classified into three cases.

(Case 1-1) In the case of a serious damage, the wire inside the harness can be seen, proceed to Step 8.

(Case 1-2) In the case of a minor damage, the wire inside the harness can not be seen, skip Step 8, and proceed to Step 9.

(Case 1-3) If there is no damage to the harnesses, skip Steps 8-9, proceed to Step 10.

Image1.8.1

8. Please refer to REHS7215, Special Instruction, "Repair Procedure for Damaged Harness Wiring", ?Type 2 Damage Repair? (Butt Splice). Repair the serious damage. Skip Step 9, proceed to Step 10.

9. Please refer to REHS7215, Special Instruction, "Repair Procedure for Damaged Harness Wiring", ?Type 1 Damage Repair?, and repair the minor damage. Proceed to Step 10.

10. Layout machine ECM harness to the front side of fuse base harness. Refer to Image1.11.1.

Image1.11.1

11. Layout machine ECM harness to the front side of fuse base harness. Refer to Image1.12.1.

Pull the ECM harness around both of the 12 pin attachment connectors and the fuse base harness, such that the ECM harness is on top.

Image1.12.1

12. Affix the ECM harness with black and brown connectors by using 3S-2093 Strap Cable at the green tape, the harness should route above the ladder clip. Refer to Image1.13.1.

Image1.13.1

13. Connect the black and brown connectors to the machine ECM. Refer to Image1.14.1.

Image1.14.1

14. Affix the bracket supporting the service connector. Refer to Image1.15.1.

Image1.15.1

15. Before closing the cover, confirm there is no interference of the cab harness and machine ECM, bracket, and Product Link controller. If clearance is not good, push harness to rear side and make clearance or fix harness by adding additional 7K-1181 Straps in order to make clearance as needed. Refer to Image1.16.1.