PRODUCT SUPPORT PROGRAM FOR REPLACING THE EXHAUST ROCKER ARM ON CERTAIN 24N MOTOR GRADERS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REPLACING THE EXHAUST ROCKER ARM ON CERTAIN 24N MOTOR GRADERS

Usage:

TEBE8984-00

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26Mar2019

U-182

A-152

D-159

O-165

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After Failure Only	PRODUCT SUPPORT PROGRAM FOR REPLACING THE EXHAUST ROCKER ARM ON CERTAIN 24N MOTOR GRADERS
4822		PS54021

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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 can only be administered after a failure occurs. The decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS54021" as the Part Number and "7755" as the Group Number. Use "96" as the Warranty Claim Description Code and use "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

31Mar2021

PROBLEM

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The existing number 12 exhaust lobe and or rocker roller can spall on certain 24N Motor Graders. If the existing rocker arm or camshaft spalls at number 12 position it can affect engine performance.

AFFECTED PRODUCT

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Model	Identification Number
24N	E9Z00201-00225 N9Z00102-00105, 201-210

PARTS NEEDED

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Qty	Part Number	Description
2	1R0716	FILTER AS-LUBE
2	5E8771	SEAL-O-RING
2	5P8429	SEAL-O-RING
6	8S9191	BOLT
1	20R1895	CAMSHAFT
1	20R8517	ARM GP-V ROCKER
6	0315085	BOLT-LOCKING
1	1090076	SEAL-O-RING
2	1178801	SEAL-O-RING
1	2314708	SEAL-O-RING
12	3565212	BOLT-12 POINT HD
1	OIL	ENGINE OIL See O&MM
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 2% 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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Before submission of a claim to this service letter, please attach records of valve lash and SOS history.

Reference appropriate Machine manual to identify proper procedure for removing machine components, as the camshaft may be removed from front or rear of engine.

Access to following tooling is required to remove camshaft:
177-8001 Pilot Sleeve
249-2936 Adapter
274-7932 Guide (Front Removal)
274-7933 Guide (Rear Removal)

Step 1: Gain access to right hand side Camshaft Covers and Valve Mechanism Covers, reference the engines Disassembly and Assembly Manual for instructions in removing necessary components.

Step 2: Remove right hand side valve mechanism covers. Refer to Dissemble and Assembly, "Valve Mechanism Cover - Remove and Install".

Step 3: Remove right hand side rocker arm and shafts. Refer to Disassembly and Assembly, "Rocker Arm and Shaft - Remove".

Step 4: Remove right hand side camshaft. Refer to Disassembly and Assembly, "Camshaft - Remove".

Step 5: Install new camshaft. Refer to Disassembly and Assembly, "Camshaft - Install".

Step 6: Replace rocker arms on rocker shaft. Refer to Disassembly and Assembly, "Rocker Arm - Disassemble" and "Rocker Arm - Assemble".

Step 7: Install rocker arm and shaft. Refer to Disassembly and Assembly, "Rocker Arm and Shaft - Install".

Step 8: Install valve mechanism covers. Refer to Dissemble and Assembly, "Valve Mechanism Cover - Remove and Install".

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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%
0-6000 hrs, 0-24 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%
6001-12000 hrs, 25-48 mo	33.0%	50.0%	0.0%	0.0%	50.0%	50.0%

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NOTE: This is a 37.5-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.

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