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4
CONTROL VALVE
DISASSEMBLY AND ASSEMBLY
Disassembly and assembly
For disassembly of the control valve, follow the procedure
below. For assembly of the control valve, follow the same
procedure as for disassembly in the reverse order.
Disassembly
Valve assembly
1. Loosen the nuts (1) and remove the tie rods (2), then
remove the sections.
Be sure to apply position marks to each section to
avoid mistakes during assembly.
Nut (1): 26.5 to 29.4 N·m
2. Remove the O-ring.
• The contact surface is of a metal seal. Pay attention
not to damage or make a dent on it.
3. Remove the main relief valve and the port relief valve,
and then remove the O-ring from the relief valve.
• Do not disassemble unless necessary. The pressure
value set in the valve is changed if the lock nut is
loosened and the setscrew is turned.
• Do not further disassemble the port relief valve as it
is impossible to adjust pressure after reassembly.
Main relief valve: 69 to 78 N·m
Port relief valve: 69 to 78 N·m
4. Remove the anti-cavitation valve (1), and then remove
the O-ring from the anti-cavitation valve.
Anti-cavitation valve: 69 to 78 N·m
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