Sakai R2-4, Руководство по ремонту

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9-003
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.
①
Check nut (2) of multifunction valve (1-15) or (1-16) for
evidence of having loosened.
Multifunction valve (Reverse) : (1-15)
Multifunction valve (Forward) : (1-16)
②
If there is evidence of nut having loosened, adjust
multifunction valve so that pressure becomes within
maximum circuit pressure range while watching pressure
gauge.
To adjust pressure, loosen nut and turn adjustment screw
(3).
Adjustment screw turned clockwise
: Pressure rise
Adjustment screw turned counterclockwise
: Pressure drop
Pressure change rate : 9 MPa/turn (1,305 psi/turn)
③
If there is no evidence of nut having loosened, remove
multifunction valve.
④
Check removed multifunction valve for trapped dirt and
scratches on its seat.
⑤
If trapped dirt is present, disassemble and clean
multifunction valve.
⑥
If a scratch is found on seat, replace multifunction valve.
⑦
After adjustment, measure pressure again and check that
pressure reaches maximum circuit pressure range.
N•m
(1) Nut : 41 N·m (30 lbf·ft)
(2) Nut : 20 N·m (15 lbf·ft)
(1-15) Multifunction valve : 89 N·m (66 lbf·ft)
(1-16)
(NOTICE)
Carefully disassemble and reassemble after taking
steps to prevent foreign material from getting in.
The numbers “1-15” and “1-16” appearing in above illustrations are consistent with lead line numbers shown
in illustration of propulsion pump in “2-2. Hydraulic Component Specifications” (page 4-008).
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R2-4-09002
1-15
1-16
R2-4-09002
1-15
1-16
SV510-
ޓ
-08003
Multifunction valve
3 2
1
SV510-
ޓ
-08003
Multifunction valve
3 2
1