PRODUCT SUPPORT PROGRAM FOR REPLACING THE MAIN HYDRAULIC PUMP ON CERTAIN 345C AND 345C L EXCAVATORS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REPLACING THE MAIN HYDRAULIC PUMP ON CERTAIN 345C AND 345C L EXCAVATORS

Usage:

REBE4411-00

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17Mar2009

U-110

A-96

D-91

O-95

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*After Failure Only*	PRODUCT SUPPORT PROGRAM FOR REPLACING THE MAIN HYDRAULIC PUMP ON CERTAIN 345C AND 345C L EXCAVATORS
5070		PS51636

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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 "PS51636" 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

31Mar2011

PROBLEM

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The main hydraulic pump may fail due to piston shoe failure on certain 345C and 345C L Excavators. If the main pump fails, the pump should be replaced with a new updated pump. The new pump includes an improved piston shoe assembly.

AFFECTED PRODUCT

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Model	Identification Number
345C	BWY00102-00205, 207-213 DHP00248-00449, 452, 459-460 ESD00168-00229 GPH00130-00372 JAR00280-00320 MDC00217-00235 PJW00350-01992, 1994-1996, 1998-2000, 2002-2005, 2008, 2010-2013, 2015-2016 RFN00143-00177 SPC00221-00263 TBA00133-00347, 349-354, 356-362 TDG00250-00372 WDE00142-00162
345C L	ELS00151-00179 FPC00101-00145 GBH00162-00195 GCL00161-00274 LYS00133-00184 S5M00221-00252, 254 TAJ00210-00307
345C MH FCR	M2R00151-00207, 209
345C MH HCR	D3S00171-00174
345C OEM	B6N00103, 111-131 NRF00100-00104

PARTS NEEDED

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Qty	Part Number	Description
7	8T5360	WASHER-HARD
7	8T8916	BOLT
4	0998111	PIN-SPRING
4	1718971	BOLT
1	2724648	COUPLING GP-BSC
1	3228732	PUMP GP-2PS-C-V
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 1% 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 new main hydraulic pump group is available for direct replacement of the former main hydraulic pump group. 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%
0-6000 hrs, 0-36 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%
6001-10000 hrs, 37-60 mo	33.3%	50.0%	0.0%	0.0%	50.0%	50.0%

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NOTE: This is a 40.0-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. Place the machine in the service position and release the hydraulic oil pressure in the system. Refer to the affected machines Disassembly and Assembly manual, "Hydraulic System Pressure - Release".

2. Remove the failed main hydraulic pump and pump coupling. Refer to the affected machines Disassembly and Assembly manual, "Main Hydraulic Pump and Pump Drive Coupling - Remove".

3. Install the new main hydraulic pump and new coupling. Refer to the affected machines Disassembly and Assembly manual, "Main Hydraulic Pump and Pump Drive Coupling - Install".

NOTE: After replacement of the main pump, be sure to completely release air from the main pump and fill the hydraulic tank with hydraulic oil to the proper level in accordance with the following procedure.

(1) With the engine stopped, remove the plug on the oil filling port located at the top of each main pump and fill each pump with hydraulic oil. After making sure that each pump is properly filled with oil, tighten the plug and run the engine at low idle.

Image1.5.1

(2) With the engine running at low idle, place the boom at its maximum reach position and shut off the engine.

(3) Slowly move the boom control lever toward boom-down position until the bucket is lowered to the ground. This will allow the oil remaining in the boom cylinder to return to the hydraulic tank, pressurizing the hydraulic tank.

NOTE: It is allowed to use an air-compressor to pressurize the hydraulic tank. When doing so, never try to use compressor pressure exceeding 0.7kgf/cm2. Failure to do so may result in damage to the hydraulic tank.

(4) Slowly loosen the plug on the oil filling port until oil starts to flow out. Repeat this step several times until air has been completely released from the pumps.

(5) Tighten the plug to a torque of 48+/-10 N/m.

(6) Start the engine and activate the machine for 10 to 15 minutes by slowly and evenly moving each implement control lever toward both directions several strokes.

(7) Place the machine in the specified parking position, as shown below, and shut off the engine.

Image1.12.1

(8) Replace the hydraulic return filter and fill the hydraulic tank with hydraulic oil to the proper level (within High and Low ranges indicated by the level gage on the tank).
A = High temperature level
B = Low temperature level

Image1.13.1

NOTE: Be sure to add same brand hydraulic oil as that actually used when filling. Mixing with hydraulic oil other than actually used will not only decrease the maintenance interval but shorten the hydraulic oil life.

NOTE: Starting the engine with incomplete release of air may cause serious damage and/or shorten the lives of hydraulic pumps.