7-26
5. RCV LEVER
Criteria
Remark
The valve is to be replaced when the leakage
becomes more than 1000 cc/m at neutral handle
position, or more than 2000 cc/m during operation.
This is to be replaced when the sliding surface has
worn more than 10
儙
m,
#
compared with the non-
sliding surface.
This is to be replaced when the top end has worn
more than 1 mm.
The pin, shaft, and joint of the operating section are
to be replaced when their plays become more than
2 mm due to wears or so on.
When abnormal noises, hunting, primary pressure
drop, etc. are generated during operation, and
these cannot be remedied, referring to section 6.
Troubleshooting, replace the related parts.
Leakage
Spool
Push rod
Play at operating
section
Operation stability
Conditions :
Primary pressure : 40 kgf/cm
2
Oil viscosity : 23 cSt
The leakage at the left condition is
estimated to be nearly equal to the
above leakage.
When a play is due to looseness of a
tightened section, adjust it.
Maintenance
check item
Notes 1. It is desirable to replace seal materials, such as O-rings, every disassembling. However,
they may be reused, after being confirmed to be free of damage.
凱
7
1 mm