Service Repair Manual
Models
325-A 325 325L EXCAVATOR
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Product: EXCAVATOR
Model: 325-A EXCAVATOR 5WK
Configuration: 325, 325L TRACK TYPE EXCAVATORS 5WK00001-UP (MACHINE) POWERED BY 3116 ENGINE
Disassembly and Assembly
MAIN CONTROL VALVE SUPPLEMENT FOR 325, 325 L AND 325 N EXCAV
Media Number -SENR5462-00
Publication Date -01/05/1992
Date Updated -11/10/2001
Main Control Valve
SMCS - 5451-015; 5451-016
Disassemble Main Control Valve
Start By:
a. remove main control valve*
NOTE: The weight of the main control valve is 190 kg (420 lb)
1. Thoroughly clean the outside of the main control valve prior to disassembling it.
NOTICE
Put identification marks on all components of the main control valve as
they are being removed. All parts must be reinstalled in their original
locations. Do not damage any of the internal parts during removal. A
damaged valve component will result in oil leakage and affect valve
performance. Keep all internal parts of the valve clean and lubricated.
2. Remove and disassemble pressure control valve (2) as follows:
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325, 325L TRACK TYPE EXCAVATORS 5WK00001-UP (MACHINE) POWERED ...
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There is spring force against pressure control valve (2). When four bolts
(1) that hold the pressure control valve in place are removed, the spring
force will be released. To prevent possible personal injury, hold
pressure control valve (2) in place by hand as bolts (1) are being
removed.
a. While holding pressure control valve (2) in place by hand, slowly remove four bolts (1).
Remove pressure control valve (2) from the main valve body.
b. Remove spring (3) from the main valve body.
c. Remove valve assembly (4) from the main valve body.
d. Remove O-ring seals (5) and (6) from the pressure control valve body.
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325, 325L TRACK TYPE EXCAVATORS 5WK00001-UP (MACHINE) POWERED ...
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