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COUNTERBALANCE VALVE
BRAKE PRESSURE REDUCING VALVE

Technical Manual For Hydraulic Excavator Model 330Lcr 1
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TM 5-3805-281-24-1
Hydraulic System
RELIEF VALVES
NOTE: Valves can be removed with propel motor on
machine.
Tighten relief valve (A).
Relief Valve--Specification
Torque ......................................................................... 540 Nm (398 lb-ft)
02
0260
28
A--Relief Valve
B--O-Ring
C--Backup Ring (2 used)
D--O-Ring
CED,OUOE023,175
1901JUN985/7
CHECK VALVES
NOTE: Valves can be removed with propel motor on
machine.
Install parts (A--C).
Tighten plug (C).
Check Valve Plug--Specification
Torque ......................................................................... 235 Nm (173 lb-ft)
A--Plug with O-Ring (2 used)
B--Spring (2 used)
C--Poppet (2 used)
Continued on next page
CED,OUOE023,175
1901JUN986/7
10-67


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