PRODUCT SUPPORT PROGRAM FOR REPLACING THE SLOW RETURN CHECK VALVE ON CERTAIN 345D L EXCAVATORS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REPLACING THE SLOW RETURN CHECK VALVE ON CERTAIN 345D L EXCAVATORS

Usage:

REBE5733-00

Show/hide table

15Dec2009

U-434

Show/hide table

*Before/After*	PRODUCT SUPPORT PROGRAM FOR REPLACING THE SLOW RETURN CHECK VALVE ON CERTAIN 345D L EXCAVATORS
5057		PS43005

Show/hide table

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 "PS43005" 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.

Show/hide table

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.

Show/hide table

TERMINATION DATE

31Dec2011

PROBLEM

Show/hide table

The existing slow return check valve may crack due to the bolts being over tightened during assembly on certain 345D L Excavators. If the existing slow return check valve cracks, it may result in a hydraulic oil leak.

AFFECTED PRODUCT

Show/hide table

Model	Identification Number
345D L	EEH00586, 589-591, 594-597, 602-604, 609-611, 618

PARTS NEEDED

Show/hide table

Qty	Part Number	Description
1	4J0527	SEAL-O-RING
1	6J2680	SEAL-O RING
4	1708553	BOLT-SOCKET HEAD
1	3350374	VALVE GP-CHECK-C
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 17% 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

Show/hide table

Replace the slow return check valve with a new slow return check valve. Refer to the attached Rework Procedure.

Show/hide table

SERVICE CLAIM ALLOWANCES

Show/hide table

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%
0-3000 hrs, 0-24 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%

Show/hide table

NOTE: This is a 2.0-hour job

Show/hide table

PARTS DISPOSITION

Show/hide table

Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.

Rework Procedure

Show/hide table

Prior to starting any work on the machine, please review, understand and adhere to all safety and environmental warnings in the appropriate disassembly and assembly manual.

Image1.1.1

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".

Image1.2.1

2. Remove the platform over the main control valve.

Image1.3.1

3. Remove the molded air inlet hose to gain access to the rework area.

Image1.4.1

4. Remove the two bolts from the oil cooler return tube mounting bracket.

Image1.5.1

5. Disconnect the swing motor drain line from the bottom of the valve and remove four 8T-5092 Bolts from the manifold.

Image1.6.1

6. Remove the four 170-8553 Bolts holding the slow return check valve to the main valve and remove the slow return check valve.

Image1.7.1

7. Use a hydraulic ram or hydraulic wedge in order to move the manifold back from the valve by 1/2 inch. This is required to allow clearance to remove the valve as the internal components of the valve extend into the manifold.

8. Install the new 335-0374 Slow Return Check Valve.

9. Remove the hydraulic tooling from the manifold.

10. Connect the swing motor return line to the bottom of the slow return check valve.

11. Install the four bolts to the oil cooler return tube.

12. Install the air inlet hose.

13. Remove the suction from the hydraulic tank. Check the hydraulic oil level and add oil if required.

14. Start the machine and increase the hydraulic oil temperature to 55C +/- 5C, and check for leaks.

15. Clean up the rework area and install the platform over the main control valve.