jcb JS300 Service Manual page 941
Tracked excavators - tier 4i isuzu engine
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Also See for JS300:
- Service manual (51 pages) ,
- Service manual (51 pages) ,
- Operator's manual (31 pages)
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Part Name
Main Relief
Pilot Relief
Boom Port Relief Raise
Lower
Bucket Port Relief Open/
Close
Dipper Port Relief Out/In
Track Motor Relief
Swing Port Relief Left/Right
(1) The main relief setting must be increased during testing.
E-280
Table 3. JS330, JS370
Pressure bar (lb/in
2
)
Standard: 319 bar (4626 lb/in
Boost: 348 bar (5047 lb/in
2
44 bar (638 lb/in
2
)
363 bar (5265 lb/in
2
)
245 bar (3553 lb/in
2
)
363 bar (5265 lb/in
2
)
2
363 bar (5265 lb/in
)
343 bar (4974 lb/in
2
)
JS330
JS370
255 bar (3698 Ib/
284 bar (4119 Ib/in
in
2
)
9813/5100-1
Section E - Hydraulics
Hydraulic System Test Procedures
Measurement Method
2
Dipper Relief
) Power
Relief Valve (MRV)
)
Pressure ( T E-283)
Lever Neutral
Relief
Pressure ( T E-285)
Boom Up Relief
K Auxiliary Relief
Valves ( T E-286)
Boom down Relief
K Auxiliary Relief
Valves ( T E-286)
Bucket Relief
K Auxiliary Relief
Valves ( T E-286)
Dipper Relief
K Auxiliary Relief
Valves ( T E-286)
Track Relief
Motor Relief
Pressure ( T E-294)
Swing Relief
Motor Pressure
2
)
Relief ( T E-292)
Pressure Testing - General
Measurement
K Fig 1.
Port
( T E-278)
K Main
TP1 or TP2
K Servo
TP3
TP1
(1)
TP1
TP1
(1)
(1)
TP2
K Travel
TP1 or TP2
(1)
K Slew
TP2
E-280
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