10-010
INSPECTION AND ADJUSTMENT
6-2. Inspection
If measurement results indicate the pressure deviating from
maximum circuit pressure range, make an adjustment in
accordance with procedure described below.
6-2-1.
Inspection of high pressure relief valves
installed in vibrator pump
①
Check high pressure relief valve (2-11), (2-12), (2-14) or
(2-15) evidence of having loosened.
High pressure relief valve (2-15)
: Front drum low amplitude side
High pressure relief valve (2-11)
: Front drum high amplitude side
High pressure relief valve (2-14)
: Rear drum low amplitude side
High pressure relief valve (2-12)
: Rear drum high amplitude side
②
If there is evidence of high pressure relief valve having
loosened, adjust it so that pressure becomes within
maximum circuit pressure range while watching pressure
gauge.
③
Remove high pressure relief valve.
④
Remove lock screw (5).
⑤
Turn adjustment screw (6) to adjust pressure.
Adjustment screw turned clockwise
: Pressure rise
Adjustment screw turned counterclockwise
: Pressure drop
Pressure change rate
: 4.3 MPa/turn (623 psi/turn)
⑥
If there is no evidence of high pressure relief valve having
loosened, remove it.
⑦
Check removed high pressure relief valve for trapped dirt
and scratches on its seat.
⑧
If trapped dirt is present, disassemble and clean high
pressure relief valve.
⑨
If a scratch is found on seat, replace high pressure relief
valve.
⑩
After inspection, measure pressure again and check that
pressure reaches maximum circuit pressure range.
(2-11) to (2-15) High pressure relief valve
: 160 N·m (118 lbf·ft)
(NOTICE)
Carefully disassemble and reassemble after taking
steps to prevent foreign material from getting in.
The numbers “2-11”, “2-12,” “2-14” and “2-15” appearing in above illustrations are consistent with lead line
numbers shown in illustration of vibrator pump in “2-2. Hydraulic Component Specifications” (page 4-006).
•
•
•
•
•
•
•
SW880-10010
2-11
2-12
2-15
2-14
Vibrator pump
SW880-10010
2-11
2-12
2-15
2-14
Vibrator pump
SW880-1-10008
6
5
SW880-1-10008
6
5
Содержание SW880-1
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