PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND POSSIBLY REPLACING THE 7N-2326 LIFTING EYES ON CERTAIN 785C, 785D, 793D OFF-HIGHWAY TRUCKS, G3508B, G3516B, G3516J, AND G3520B ENGINES, 3512B, 3512B HD, 3512C, 3512C HD, 3516, 3516B, 3516C, 3516E, G3516H Caterpillar

PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND POSSIBLY REPLACING THE 7N-2326 LIFTING EYES ON CERTAIN 785C, 785D, 793D OFF-HIGHWAY TRUCKS, G3508B, G3516B, G3516J, AND G3520B ENGINES, 3512B, 3512B HD, 3512C, 3512C HD, 3516, 3516B, 3516C, 3516E, G3516H

Usage:

TEBE6672-01

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28Sep2017

(Revised 12Oct2017)

U-512

A-365

D-422

O-426

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Safety Parts stock action needed	PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND POSSIBLY REPLACING THE 7N-2326 LIFTING EYES ON CERTAIN 785C, 785D, 793D OFF-HIGHWAY TRUCKS, G3508B, G3516B, G3516J, AND G3520B ENGINES, 3512B, 3512B HD, 3512C, 3512C HD, 3516, 3516B, 3516C, 3516E, G3516H, AND G3520H HD GENERATOR SETS, 3512C HD LOCOMOTIVE ENGINES, 3512C, 3512C HD, 3512E HD, 3516C HD, AND 3516E HD MARINE ENGINES, 3512B, 3512C HD, AND 3516C HD MARINE AUXILIARY ENGINES, 3512, AND 3512C HD PETROLEUM ENGINES
1122 1000		PI11125

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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 as soon as possible. When reporting the repair, use "PI11125" 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 "PI11125" 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:

When submitting claim for Parts Stock Action, Use the appropriate 99Z as the s/n, the appropriate Service Letter Program Number as the Part number in the Part Causing Failure field, "7751" as the Group Number, "56" as the Description Code.

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NOTE:	This Revised Service Letter replaces the 28Sep2017 Service Letter. Changes have been made to the Title, Problem, and Affected Product.

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PROBLEM

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The engine lifting eyes need to be inspected and possibly replaced on certain 785C, 785D, and 793D Off-Highway Trucks, G3508B, G3516B, G3516J, and G3520B Engines, 3512B, 3512B HD, 3512C, 3512C HD, 3516, 3516B, 3516C, 3516E, G3516H, and G3520H HD Generator Sets, 3512C HD Locomotive Engines, 3512C, 3512C HD, 3512E HD, 3516C HD, and 3516E HD Marine Engines, 3512B, 3512C HD, and 3516C HD Marine Auxiliary Engines, 3512, and 3512C HD Petroleum Engines. The existing lifting eye dowel pin holes could have been manufactured oversized. The oversized holes can allow the press fit pin to slide out of position. Please note that an out of position lifting eye pin may result in a reduced lifting ability and may, in conjunction with other factors or circumstances, result in a risk of personal injury or death.

AFFECTED PRODUCT

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Model	Identification Number
*****Group 1*****
785C	APX02402
785D	MSY00696
793D	FDB01915

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*****Group 2*****
3512	LN200106-00107, 109
3512B	ED200122 JM300111-00112 LY800196-00218
3512B HD	LY900100
3512C	LYH00164-00168, 170, 172 PXW00286-00291
3512C HD	F2X00380 LYP00110 MXP00252-00253 PXF00326-00332 PXG00292-00294 WF300602-00604 WF500964-00965, 968-970, 972-985, 988, 990-998
3512E HD	MR800201-00202
3516	YAS01014
3516B	GZT00178 ZAR01034
3516C	AL200147-00148, 150-151, 154 SBJ02141-02145, 2149-2150 SBK02476-02480
3516C HD	MXT00215-00216 PXH00487-00488 PXJ00461-00464
3516E	JH800126
3516E HD	MRC00225-00226
G3508B	N8C00149-00152
G3516B	N6E00496-00502
G3516H	NWH00133-00136
G3516J	N6W00241-00260, 262, 264
G3520B	TPC01203-01206
G3520H HD	GFR00191

PARTS NEEDED

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Qty	Part Number	Description
*****Group 1*****
1	7N2326	EYE-LIFTING (if needed)
1	7N2328	DOWEL (if needed)
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 45% 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	7N2326	EYE-LIFTING (if needed)
1	7N2328	DOWEL (if needed)
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 45% 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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****Parts Stock ****

Inspect all 7N-2326 Lifting Eyes in dealer parts stock if they were purchased from May 2017 through August 2017. Measure the diameter of the pin bore to ensure that the diameter meets a print specification of 25.367 +/- 0.020 mm. Replace any 7N-2326 Lifting Eyes that have holes that are out of tolerance.

Inspect all 150-7972 Lifting Eye Assemblies in dealer parts stock if they were purchased from May 2017 through August 2017. Follow the inspection process documented it the attached Rework Procedure section of this this letter since the pin is already pressed into the lifting eye for the 150-7972 assembly.

Follow the inspection process documented in the attached Rework Procedure section of this letter for the following engine serial numbers in dealer parts stock and/or dealer exchange inventory:

Engine Arrangement: 293-5407
1GZ09183

Engine Arrangement: 437-8263
1KZ05587

Engine Arrangement: 373-9862
8BR03193, 8BR03194

Engine Arrangement: 365-9313
B7F00874, B7F00878

Engine Arrangement: 286-5184
DDJ00666, DDJ00667

Engine Arrangement: 437-8263
ZN200130, ZN200131, ZN200135

Engine Arrangement: 286-5187
ZN700191, ZN700192

****Affected Product****

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Refer to the attached Rework Procedure. Image1 below identifies the holes that may be oversized.

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Image1

OWNER NOTIFICATION

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Owners in the following countries will receive the attached Owner Notification:
US
Canada
Australia
New Zealand

SERVICE CLAIM ALLOWANCES

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****Parts Stock****

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

7N-2326 lifting eyes inspected in dealer parts stock:
Labor allowance: 1 labor hour will be allowed per part inspected
Part allowance: 1 replacement 7N-2326 lifting eye will be provided for each part that fails the inspection procedure

150-7972 lifting eyes inspected in dealer parts stock:
Labor allowance: 1 labor hour will be allowed per part inspected
Part allowance: 1 replacement 150-7972 lifting eye will be provided for each part that fails the inspection procedure

Engines inspected in dealer parts stock:
Labor allowance: 1 labor hour will be allowed per engine inspected
Part allowance: 1 replacement 7N-2326 lifting eye and 1 7N-2328 dowel will be provided for each part that fails the inspection procedure

****Affected Product****

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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 for Group 1
The labor allowed above is to perform the inspection. 1 additional hour will be provided for each lifting eye that needs to be replaced.

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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 for Group 2
The labor allowed above is to perform the inspection. 1 additional hour will be provided for each lifting eye that needs to be replaced.

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PARTS DISPOSITION

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****Parts Stock****

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

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****Affected Product****

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

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EXAMPLE COPY OF OWNER NOTIFICATION

XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999

SAFETY - PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND POSSIBLY REPLACING THE 7N-2326 LIFTING EYES

MODELS INVOLVED - CERTAIN 785C, 785D, AND 793D OFF-HIGHWAY TRUCKS, G3508B, G3516B, G3516J, AND G3520B ENGINES, 3512B, 3512B HD, 3512C, 3512C HD, 3516, 3516B, 3516C, 3516E, G3516H, AND G3520H HD GENERATOR SETS, 3512C HD LOCOMOTIVE ENGINES, 3512C, 3512C HD, 3512E HD, 3516C HD, AND 3516E HD MARINE ENGINES, 3512B, 3512C HD, AND 3516C HD MARINE AUXILIARY ENGINES, 3512, AND 3512C HD PETROLEUM ENGINES

Dear Cat Product Owner:

The engine lifting eyes need to be inspected on the products listed below. The existing lifting eye dowel pin holes could have been manufactured oversized. The oversized holes can allow the press fit pin to slide out of position. Please note that an out of position lifting eye pin may result in a reduced lifting ability and may, in conjunction with other factors or circumstances, result in a risk of personal injury or death. You will not be charged for the service performed.

Contact your local Cat dealer immediately to schedule this service. The dealer will advise you of the time required to complete this service.

If you are no longer the owner of this product(s), please contact your local Cat dealer so that our records can be updated.

You may now search for open Safety Service Letters by entering your product serial number(s). Visit the CAT.COM/SAFETY website and click on SUPPORT, then SAFETY SERVICES for more information. Please refer the dealer to their Service Letter dated 28Sep2017 when scheduling this service.

We regret the inconvenience this may cause you, and urge you to have this service performed for your safety and satisfaction.

Caterpillar Inc.

Identification #(s)

Attached to 28Sep2017 Service Letter

Rework Procedure

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Engine lifting eyes are located at the front and rear of the engine.

The 7N-2328 pin is pressed into the 7N-2326 lifting eye. The 7N-2328 pin is designed to rotate in the 155-0726 bracket.

Use a punch and hammer to tap the pin that is pressed into the lifting eye. A 16 ounce ball peen hammer (CAT PN: 386-3351) is recommended for use. Limit travel of the hammer head to ~150mm to 200mm (~6 to 8 inches) when tapping the pin.

Image1.1.1

If the pin moves relative to the 7N-2326 Lifting Eye, replace the 7N-2326 Lifting Eye and 7N-2328 pin.

Note: The lifting eye pin will slide (~3mm) back and forth with relation to the 155-0726 bracket.

Note: Excessive striking force can move a pin with a proper press fit. Experience to date has been that pins move with minimal force in lifting eyes that were manufactured with oversized holes.