jcb JS300 Service Manual page 940
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-279
Table 2. JS300
2
Pressure bar (lb/in
)
Standard: 343 bar (4974 lb/in
2
Boost: 373 bar (5410 lb/in
40 bar (580 lb/in
2
)
392 bar (5685 lb/in
2
)
2
264 bar (3828 lb/in
)
392 bar (5685 lb/in
2
)
392 bar (5685 lb/in
2
)
343 bar (4974 lb/in
2
)
255 bar (3698 Ib/
2
in
)
9813/5100-1
Section E - Hydraulics
Hydraulic System Test Procedures
Measurement Method
Dipper Relief
2
) 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
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)
TP2
(1)
K Travel
TP1 or TP2
(1)
K Slew
TP2
E-279
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