Sakai SW880-1, Руководство по ремонту

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10-003
INSPECTION AND ADJUSTMENT
2-2. Adjustment
If measurement results indicate the pressure deviating from
maximum circuit pressure range, make an adjustment in
accordance with procedure described below.
2-2-1. If pressures on both forward and reverse
sides deviate from maximum circuit
pressure range by same value
①
Check nut (3) of cut off valve (1-4) for evidence of having
loosened.
②
If there is evidence of nut having loosened, adjust cut off
valve so that pressure becomes within maximum circuit
pressure range while watching pressure gauge.
To adjust pressure, loosen nut and turn adjustment screw
(4).
Adjustment screw turned clockwise
: Pressure rise
Adjustment screw turned counterclockwise
: Pressure drop
Pressure change rate : 10 MPa/turn (1,450 psi/turn)
③
If there is no evidence of nut having loosened, remove cut
off valve.
④
Check removed cut off valve for trapped dirt and scratches
on its seat.
⑤
If trapped dirt is present, disassemble and clean cut off
valve.
⑥
If a scratch is found on seat, replace cut off valve.
⑦
After adjustment, measure pressure again and check that
pressure reaches maximum circuit pressure range.
(3) Nut : 22 N·m (16 lbf·ft)
(1-4) Cut off valve : 35 N·m (26 lbf·ft)
(NOTICE)
Carefully disassemble and reassemble after taking
steps to prevent foreign material from getting in.
The numbers such as “1-4” appearing in above illustrations is consistent with lead line numbers shown in
illustration of propulsion pump in “2-2. Hydraulic Component Specifications” (page 4-006).
•
•
•
•
SW880-10002
1-4
Propulsion pump
SW880-10002
1-4
Propulsion pump
SW800-09003
3
4
SW800-09003
3
4