PRODUCT SUPPORT PROGRAM FOR REWORKING THE LIFT CYLINDER HOSES AND SPACER ON CERTAIN 236B2 AND 236B3 SKID STEER LOADERS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REWORKING THE LIFT CYLINDER HOSES AND SPACER ON CERTAIN 236B2 AND 236B3 SKID STEER LOADERS

Usage:

REBE6481-00

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10Sep2010

U-368

D-317

O-322

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*Before/After*	PRODUCT SUPPORT PROGRAM FOR REWORKING THE LIFT CYLINDER HOSES AND SPACER ON CERTAIN 236B2 AND 236B3 SKID STEER LOADERS
5057		PS43158

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NOTE:

This Program must be administered either before or after failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS43158" as the Part Number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and "T" as the SIMS Description code. If administered after failure, use "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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TERMINATION DATE

30Sep2012

PROBLEM

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The existing lift cylinder hoses can rub against the openings in the lift cylinder tower on certain 236B2 and 236B3 Skid Steer Loaders. Also, the existing lift cylinder head end fitting can rub on the outer tower plate. If the existing hose or cylinder fails, it will result in a hydraulic leak.

AFFECTED PRODUCT

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Model	Identification Number
236B	HEN09795, 9797-9804
236B 3	A9H00309, 312-314, 351, 363, 365, 415, 423, 431, 435, 437, 439-440

PARTS NEEDED

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Qty	Part Number	Description
6	6V8398	SEAL-O-RING-ORFS (After Failure Only)
2	2185739	HOSE AS (After Failure Only)
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 32% 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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Refer to the attached Rework Procedure.

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SERVICE CLAIM ALLOWANCES

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Product smu/age whichever comes first	Caterpillar		Dealer Suggested		Customer Suggested
Product smu/age whichever comes first	Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
0-1500 hrs, 0-12 mo	100.0%	100.0%	0.0%	0.0%	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.

Rework Procedure

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Inspect the right and left side lift hoses for contact with the vertical reinforcement plate and the horizontal opening in the lift tower. Contact with the vertical reinforcement plate can be observed with the loader frame in the raised position. Refer to Image 1.1.1. Contact with the horizontal opening in the fender can be observed with the loader frame in the down position. Refer to Image 1.1.2. If contact in either location is noted, perform the following rework procedure to repair the damaged hoses.

Image1.1.1

Image1.1.2

Perform all steps of this rework procedure with the arms in the full down position.

Place oil absorbent mats under the lift cylinders and on the battery to minimize oil cleanup.

1. Remove the damaged lift hose(s).

2. Disconnect the undamaged lift hose(s) at the cylinder end and cap in order to prevent contamination.

3. Loosen the fitting at the tubes in the engine compartment. Refer to Image 1.2.1. Do not disconnect the hose.

Image1.2.1

4. Install the new hose.

5. In the engine compartment, orient the hose that is towards the front of the machine at a 12:00 position and tighten to a torque of 65 +/- 7 Nm (48 +/- 5 ft.lb). Orient the hose that is towards the rear of the machine at a 11:00 position and tighten to a torque of 65 +/- 7 Nm (48 +/- 5 ft.lb). Refer to Image 1.3.1.

Image1.3.1

6. Connect the hoses to the lift cylinders. Use a back up wrench to position the hoses so they do not contact the vertical reinforcement plate in the tower. Tighten to a torque of 65 +/- 7 Nm (48 +/- 5 ft.lb). Refer to Image 1.4.1.

Image1.4.1

7. Cycle the loader frame from fully down to fully raised and inspect the right and left lift hoses for contact with the vertical reinforcement plate and the horizontal opening in the lift tower. Adjust if necessary.