PRODUCT SUPPORT PROGRAM FOR INSPECTING AND POSSIBLY REPLACING THE 333-9185 PUSHRODS IN CERTAIN C175 GENERATOR SETS Caterpillar

PRODUCT SUPPORT PROGRAM FOR INSPECTING AND POSSIBLY REPLACING THE 333-9185 PUSHRODS IN CERTAIN C175 GENERATOR SETS

Usage:

REBE8283-00

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20Apr2012

U-222

A-176

D-186

O-202

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*Before/After*	PRODUCT SUPPORT PROGRAM FOR INSPECTING AND POSSIBLY REPLACING THE 3339185/">333-9185 PUSHRODS IN CERTAIN C175 GENERATOR SETS
1102 1121 1123 1209		PS43575

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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 "PS43575" 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

30Apr2014

PROBLEM

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The push rod cup diameter on certain C175 Generator Sets may have been manufactured to the incorrect dimensions. The existing push rods may fail if the rocker arm adjusting screw is not properly seated in the bottom of the push rod cup. A failure could result in a broken push rod, significant resultant damage, and considerable downtime. The push rods needs to be inspected on engines with service hours between 50 and 500 hours

AFFECTED PRODUCT

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Model	Identification Number
C175-16	WYB00251, 253, 255, 260, 262-264, 266, 270-271, 273-274, 276-302, 304-308, 311-318

PARTS NEEDED

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Qty	Part Number	Description
4	3339185	PUSHROD (AS REQUIRED)
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 22% 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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Perform the steps detailed in the attached Rework Procedure only on units with hours BETWEEN 50 and 500 hours. The minimum run time is required to allow for clear wear patterns to form at the contact location between the rocker arm adjusting screw and the pushrod cup.

NOTE: If a failure has not occurred before 500 hours, the risk of a failure is extremely low.

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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%
0-49 hrs, 0-24 mo	0.0%	0.0%	0.0%	0.0%	100.0%	100.0%
50-500 hrs, 25-60 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%

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NOTE: This is a 12.0-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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1. Refer to the "Valve Cover - Remove and Install" and "Rocker Shaft and Push Rods - Remove" sections of the C175 Disassembly and Assembly.

2. Remove the valve cover, rocker shaft assembly, and push rods.

3. Inspect the push rod cup and ball-end of the rocker arm adjusting screw. Check the location of the contact area on both the push rod and adjusting screw. Ensure that the contact area is at the bottom of the adjusting screw and cup as shown in the left side of Image1.1.1, marked GOOD.

- If the contact area is at the bottom of the cup and end of the adjusting screw (GOOD), reuse the push rod.

- If the contact area is around the top of the adjusting screw and the rim of the push rod cup (BAD), replace the existing push rod with a new 3339185/">333-9185 Push Rod.

Image1.1.1

4. Install the rocker shaft assembly and appropriate pushrods based on inspection results. Refer to the "Rocker Shaft and Push Rods - Install" section of the C175 Disassembly and Assembly for assembly instructions.

NOTE: Lubricate the valve bridges and the pockets with clean engine oil before assembly.

NOTE: Ensure that the push rods are seated in the bores. Use a flashlight in order to ensure that the push rods are in the lifter cups.

5. Repeat removal and inspection process for all cylinders.

6. Adjust the valve lash. Refer to Testing and Adjusting, "Engine Valve Lash - Inspect/Adjust".

7. Install the valve covers.