2008/12/22 Caterpillar


An Improved Relief Valve is Available for Certain Series E Backhoe Loaders With All Wheel Steering {4322, 5067, 5264, 5479}

Usage:

432E BXE
Backhoe Loader:
432E (S/N: BXE1-UP)
434E (S/N: FSH1-UP)
442E (S/N: GKZ1-UP)
444E (S/N: LBE1-UP)

Description of Change: Certain Backhoe Loaders that are equipped with all wheel steering may experience gradual drift in the rear steering cylinder circuit. Drift may occur while roading the machine in either the front wheel steer mode or the circle steer mode.

Adaptable To: Fit the new 327-4315 Relief Valve Gp to the 256-3089 Steering Manifold Gp. The new 327-4315 Relief Valve Gp has a pressure setting of 223 ± 7 bar (3233.5 ± 101.5 psi).

Check other components. Refer to Special Instruction, REHS4075, "Troubleshooting the System for All Wheel Steering".

The improved relief valve is adaptable to the following machines:

  • 432E (S/N: BXE260-260)

  • 432E (S/N: BXE262-264)

  • 432E (S/N: BXE266-268)

  • 432E (S/N: BXE547-547)

  • 432E (S/N: BXE549-549)

  • 432E (S/N: BXE551-551)

  • 432E (S/N: BXE553-553)

  • 432E (S/N: BXE636-636)

  • 432E (S/N: BXE800-800)

  • 432E (S/N: BXE873-873)

  • 432E (S/N: BXE922-922)

  • 432E (S/N: BXE924-925)

  • 432E (S/N: BXE959-959)

  • 432E (S/N: BXE961-962)

  • 432E (S/N: BXE964-964)

  • 432E (S/N: BXE1096-1096)

  • 432E (S/N: BXE1498-1499)

  • 432E (S/N: BXE1504-1504)

  • 434E (S/N: FSH1-1612)

  • 442E (S/N: GKZ290-291)

  • 442E (S/N: GKZ293-295)

  • 442E (S/N: GKZ299-299)

  • 442E (S/N: GKZ302-302)

  • 442E (S/N: GKZ306-311)

  • 442E (S/N: GKZ316-324)

  • 442E (S/N: GKZ332-337)

  • 442E (S/N: GKZ341-343)

  • 442E (S/N: GKZ347-355)

  • 442E (S/N: GKZ362-363)

  • 442E (S/N: GKZ366-366)

  • 442E (S/N: GKZ369-371)

  • 442E (S/N: GKZ374-381)

  • 442E (S/N: GKZ387-390)

  • 442E (S/N: GKZ403-403)

  • 442E (S/N: GKZ414-414)

  • 442E (S/N: GKZ416-418)

  • 442E (S/N: GKZ420-430)

  • 442E (S/N: GKZ433-438)

  • 442E (S/N: GKZ440-440)

  • 442E (S/N: GKZ442-442)

  • 442E (S/N: GKZ444-447)

  • 442E (S/N: GKZ449-454)

  • 442E (S/N: GKZ456-456)

  • 442E (S/N: GKZ458-458)

  • 442E (S/N: GKZ465-469)

  • 442E (S/N: GKZ471-477)

  • 442E (S/N: GKZ481-485)

  • 442E (S/N: GKZ491-501)

  • 442E (S/N: GKZ506-508)

  • 442E (S/N: GKZ510-511)

  • 442E (S/N: GKZ600-602)

  • 442E (S/N: GKZ604-608)

  • 442E (S/N: GKZ611-618)

  • 442E (S/N: GKZ623-627)

  • 442E (S/N: GKZ634-634)

  • 442E (S/N: GKZ638-640)

  • 442E (S/N: GKZ646-646)

  • 442E (S/N: GKZ649-652)

  • 442E (S/N: GKZ654-660)

  • 442E (S/N: GKZ666-672)

  • 442E (S/N: GKZ674-674)

  • 442E (S/N: GKZ676-677)

  • 442E (S/N: GKZ684-684)

  • 442E (S/N: GKZ689-691)

  • 442E (S/N: GKZ695-695)

  • 442E (S/N: GKZ698-700)

  • 442E (S/N: GKZ711-711)

  • 442E (S/N: GKZ713-717)

  • 442E (S/N: GKZ720-722)

  • 442E (S/N: GKZ727-727)

  • 442E (S/N: GKZ729-729)

  • 442E (S/N: GKZ743-744)

  • 442E (S/N: GKZ747-758)

  • 442E (S/N: GKZ766-770)

  • 442E (S/N: GKZ772-772)

  • 442E (S/N: GKZ778-779)

  • 442E (S/N: GKZ783-784)

  • 442E (S/N: GKZ787-789)

  • 442E (S/N: GKZ795-798)

  • 442E (S/N: GKZ805-806)

  • 442E (S/N: GKZ811-811)

  • 442E (S/N: GKZ814-815)

  • 442E (S/N: GKZ817-818)

  • 442E (S/N: GKZ821-823)

  • 442E (S/N: GKZ825-825)

  • 444E (S/N: LBE1-795)

The improved relief valve is effective in production on the following machines:

  • 432E (S/N: BXE4533-UP)

  • 434E (S/N: FSH1613-UP)

  • 442E (S/N: GKZ826-UP)

  • 444E (S/N: LBE796-UP)

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