9-007
INSPECTION AND ADJUSTMENT
4-2. Adjustment
• If measurement results indicate the pressure deviating
from standard maximum circuit pressure range, make an
adjustment in accordance with procedure described below.
①
Check relief valve (2) for evidence of having loosened.
②
If there is evidence of relief valve having loosened, adjust
it so that pressure becomes within standard maximum
circuit pressure range while watching pressure gauge.
• To adjust pressure, loosen adjustment plug (3).
Adjustment plug turned clockwise
: Pressure rise
Adjustment plug turned counterclockwise
: Pressure drop
Pressure change rate : 1.8 MPa/turn (261 psi/turn)
③
If there is no evidence of having loosened, remove relief
valve.
④
Check removed relief valve for trapped dirt and scratches
on its seat.
⑤
If trapped dirt is present, disassemble and clean relief
valve.
⑥
If a scratch is found on seat, replace relief valve.
⑦
After adjustment, measure pressure again and check that
pressure reaches standard maximum circuit pressure
range.
(NOTICE)
•
Carefully disassemble and reassemble after taking
steps to prevent foreign material from getting in.
CR271-09006
2
CR271-09007
3
Содержание CR271
Страница 1: ...CR271 SHOP MANUAL 3498 65634 0 ...
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Страница 11: ...SAFETY ...
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Страница 21: ...SPECIFICATIONS ...
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Страница 31: ...ENGINE AND CONTROLS ...
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Страница 39: ...HYDRAULIC SYSTEMS ...
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Страница 59: ...ELECTRICAL SYSTEM ...
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Страница 71: ...DRUMS ...
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Страница 77: ...6 005 DRUMS 7 Remove drum assembly together with bracket from frame CR271 06007 ...
Страница 79: ...6 007 DRUMS 4 See step 5 and subsequent steps under 2 1 1 Front drum Rear axle 680 kg 1 500 lbs ...
Страница 95: ...6 023 DRUMS 13 Remove side plate SUB ASSY Side plate SUB ASSY 20 kg 44 lbs CR271 06048 ...
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Страница 115: ...PARKING BRAKE ...
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Страница 119: ...WATER SPRAY SYSTEM ...
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Страница 125: ...INSPECTION AND ADJUSTMENT ...
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Страница 141: ...TROUBLESHOOTING ...
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