Sakai SW800-II, Руководство по ремонту

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9-011
INSPECTION AND ADJUSTMENT
6-2. Adjustment
If the measurement results indicate the pressure deviating
from the standard relief pressure range, make an adjustment
in accordance with the procedure described below.
6-2-1. Adjustment of the main relief valves
①
Check the locknut (8) of the main relief valves (5) or (6)
for evidence of having loosened.
Main relief valve (5): Front drum side
Main relief valve (6): Rear drum side
②
If there is evidence of the locknut having loosened, adjust
the main relief valve so that the pressure becomes within
the standard pressure range while watching the pressure
gauge.
To adjust the pressure, loosen the locknut (8) and turn the
adjustment screw (7).
Adjustment screw turned clockwise
: Pressure rise
Adjustment screw turned counterclockwise
: Pressure drop
Pressure change rate : 12.9 MPa/turn
(1,870 psi/turn)
③
If there is no evidence of the locknut having loosened,
remove the main relief valve (5) or (6).
④
Check the removed main relief valve for trapped dirt and
scratches on its seat.
⑤
If trapped dirt is present, disassemble and clean the main
relief valve.
⑥
If a scratch is found on the seat, replace the main relief
valve.
⑦
After adjustment, measure the pressure again and check
that the pressure reaches the standard pressure range.
(8) Locknut : 9.8
± 0.5
N·m ( 7.2
± 0.37
lbf·ft )
(5) and (6) Main relief valve : 78 to 88 N·m ( 58 to 65 lbf·ft )
(NOTICE)
Carefully disassemble and reassemble after taking
steps to prevent foreign material from getting in.
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•
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6
5
Right side of machine
Left side of machine
SW800- -09004
8
7
SW800- -09009