Sakai SW800-II, Shop Manual

Page: 162 / 258

9-006
INSPECTION AND ADJUSTMENT
3-2. Adjustment
If the measurement results indicate the pressure deviating
from the standard charge relief pressure setting range,
make an adjustment in accordance with the procedure
described below.
①
Check the locknut (1) of the charge relief valve (1-11) for
evidence of having loosened.
②
If there is evidence of the locknut having loosened, adjust
the charge relief valve so that the pressure becomes
within the standard charge relief valve pressure setting
range while watching the pressure gauge.
To adjust the pressure, loosen the locknut (1) and turn the
adjustment screw (2).
Adjustment screw turned clockwise
: Pressure rise
Adjustment screw turned counterclockwise
: Pressure drop
Pressure change rate : 0.4 MPa/turn (58 psi/turn)
③
If there is no evidence of the locknut having loosened,
remove the charge relief valve (1-11).
④
Check the removed charge relief valve for trapped dirt
and scratches on its seat.
⑤
If trapped dirt is present, disassemble and clean the
charge relief valve.
⑥
If a scratch is found on the seat, replace the charge relief
valve.
⑦
After adjustment, measure the pressure again and check
that the pressure reaches the standard charge relief valve
pressure setting range.
(1) Locknut : 44 N·m (32 lbf·ft)
(1-11) Charge relief valve : 70 N·m (52 lbf·ft)
(NOTICE)
Carefully disassemble and reassemble after taking
steps to prevent foreign material from getting in.
The number “1-11” appearing in the above illustrations is consistent with the lead line numbers shown in the
illustration of the propulsion pump in “2-2. Hydraulic Component Specifications” (page 4-007 and 4-008).
•
•
•
•
SW800-09006
1-11
SW800-09007
1
2
Charge relief valve