PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE ACCUMULATOR COVER, BASE, AND FASTENERS ON CERTAIN H75ES HYDRAULIC HAMMERS Caterpillar

PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE ACCUMULATOR COVER, BASE, AND FASTENERS ON CERTAIN H75ES HYDRAULIC HAMMERS

Usage:

TEBE5407-00

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15Feb2017

D-68

O-71

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Priority	PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE ACCUMULATOR COVER, BASE, AND FASTENERS ON CERTAIN H75ES HYDRAULIC HAMMERS
5077 6333		PI32732

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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 "PI32732" 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 "PI32732" 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
31Aug2017	28Feb2018

PROBLEM

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The accumulator cover is flexing during operation. This contributes to fatigue of the mounting bolts on certain H75ES Hydraulic Hammers. If the existing cover, base, or fasteners fail, it will cause a hydraulic leak.

AFFECTED PRODUCT

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Model	Identification Number
H75E S	X9K00100, 102-143, 146-149, 151-159, 161, 163, 169-172, 176

PARTS NEEDED

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Qty	Part Number	Description
1	3J7354	SEAL-O-RING-STOR
1	3K0360	SEAL-O-RING
4	6V5686	BOLT-HEX HEAD
4	1984768	WASHER-HARD
1	3226274	FILM-NITROGEN
1	3867076	MEMBRANE-ACCUM
1	3943905	SEAL-O-RING
1	5152846	BASE-ACCUM
1	5152847	COVER-ACCUM
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 40% 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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The accumulator base, cover, fasteners, membrane, and seal must be replaced with new parts. Refer to the attached Rework Procedure.

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OWNER NOTIFICATION

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

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%

NOTE: This is a 4.0-hour job
If there has been a previous repair, part age/hours will apply. Retain a copy of the previous repair invoice in the dealer's records for audit purposes, and specify repair date and machine hours in the "Additional Comments" section of the warranty claim.

PARTS DISPOSITION

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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EXAMPLE COPY OF OWNER NOTIFICATION

XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999

PRIORITY - PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE ACCUMULATOR COVER, BASE, AND FASTENERS

MODELS INVOLVED - CERTAIN H75ES HYDRAULIC HAMMERS

Dear Cat Product Owner:

The accumulator needs to be replaced on the products listed below. The existing accumulator can leak. 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. Please refer the dealer to their Service Letter dated 15Feb2017 when scheduling this service.

We regret the inconvenience this may cause you, and urge you to have this service performed as soon as possible to prevent unscheduled downtime.

Caterpillar Inc.

Identification #(s)

Attached to 15Feb2017 Service Letter

Rework Procedure

Start by removing the power cell from the hammer housing. Refer to the service manual for more information.

Disassembly:
Step 1: Discharge high pressure accumulator. Keep 9S-8005 Plug and 355-3779 Plug.

Step 2: Remove 4 6V-8201 Bolts and 9X-8399 Washers.

Step 3: Remove 369-1024 Cover and 368-7076 Membrane.

Step 4: Remove 488-1108 Base using appropriate tooling.

Assembly:
Step 1: Lubricate and install 394-3905 Seal onto 515-2846 Base.

Step 2: Install 515-2846 Base into 382-2743 Valve Body.

Step 3: Lubricate and install 368-7076 Membrane onto 515-2846 Base.

Step 4: Install 515-2847 Cover using 6V-5686 Bolts and 198-4768 Hard Washers. Tighten 6V-5686 Bolts to 240 +/- 40 Nm.

Step 5: Replace the 3K-0360 Seal on the 9S-8005 Plug.

Step 6: Replace the 3J-7354 Seal on the 355-3779 Plug.

Step 7: Install 322-6274 Decal onto 515-2847 Cover.

Step 8: Recharge high pressure accumulator to specifications using appropriate tooling.

End By:

Reinstall power cell into housing.