U20-3, U25-3 WSM Hydraulic system (Service section)
IV-S-64
C. Pilot valve
[1] Mounting and dismounting the pilot
valve
1) Reassembling procedure
1. Tightening torque of grip lock nut: 25.0~27.0
N-m (2.5~2.8 kgfâ‹…m)
The stepped (machined) part should be toward
the lever.
Bring the stepped part of the nut to the opposite side of
the grip, and fit the projection of the rubber bellows
securely to the stepped part.
2. Play of lever
Less than 2 mm
3. Control lever mounting dimension
Refer to the left figure. 517 mm (reference
value)
(
1) Tightening torque of hydraulic adaptor:
G1/4: 24.5 ~ 29.4 N
â‹…
m (2.5 ~ 3.0 kgf
·
m)
(2) Check the fitting part of the quick adaptor coupler for
any flaw.