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78 - 3
Section E
Hydraulics
9803/6400
Section E
78 - 3
Issue 1
Hydraulic Rams
Trouble Shooting
(continued)
Item Symptoms
Related Parts
Trouble
Treatment
Foreign matter biting on inner
•
Remove foreign matter.
and outer diameter.
•
Replace 'O'-ring if damaged.
•
Inspect inside tube: if any scratches or
O-ring damaged.
rust, make surface smooth with oil stone.
O-ring
•
Inspect cylinder head 'O'-ring groove: if
any scratches or rust, make surface
smooth with oil stone.
•
Inspect back up ring: if any deformation
or protrusion, replace.
Confirm the above and replace 'O'-ring.
Back up ring
Deformation, protrusion
•
Replace with 'O'-ring.
Oil leakage
Looseness
•
Disassemble cylinder head and inspect
2
from cylinder
'O'-ring and back up ring.
head joint
Cylinder head
•
Check tube and cylinder head thread for
damage. If any damage, replace.
•
After inspection, tighten to specified
torque.
Bolt
Looseness, stretching, broken
Replace all bolts and tighten to specified
torque.
Abnormal bulge
Replace with new parts.
Oil leakage from connecting parts
Cylinder tube
may be caused by abnormal
pressure (including cushion
pressure). Inspect the tube for
bulges, deformation and check the
circuit pressure.
Crack in welding
Replace with new parts.
Oil leakage
•
Cracks will develop into fractures.
from pipe
Cylinder tube
Fractures are very dangerous, so if any
3
and cylinder
pipe (hollow
cracks are found, stop work immediately
tube welded
piston rod)
and replace with new parts.
seam
•
Welding on top of cracks will have no
effect.
Summary of Contents for JS 200 Series
Page 57: ...9 1 Section 3 Routine Maintenance 9803 6400 Section 3 9 1 Issue 2 Component Location Diagram...
Page 113: ......
Page 137: ...5 3 Section C Electrics 9803 6400 Section C 5 3 Issue 2 Pump Control FLOW CHART...
Page 201: ...10 7 Section C Electrics 9803 6400 Section C 10 7 Issue 1 CAPs II Diagnostic system K C...
Page 215: ...Section E Section E Hydraulics 9803 6400 Issue 2 3 2 3 2 Schematics...
Page 217: ...Section E Section E 9803 6400 Issue 2 3 3 3 3 Hydraulics Schematics...
Page 218: ...3 5 Section E Hydraulics 9803 6400 Section E 3 5 Issue 1 Schematics Shuttle Block JS200 JS240...
Page 232: ...10 1 Section E Hydraulics 9803 6400 Section E 10 1 Issue 1 Hydraulic Pump JS200 JS240...
Page 233: ...10 2 Section E Hydraulics 9803 6400 Section E 10 2 Issue 1 Hydraulic Pump JS200 JS240...
Page 234: ...10 3 Section E Hydraulics 9803 6400 Section E 10 3 Issue 1 Hydraulic Pump JS200 JS240...
Page 263: ...30 2 Section E Hydraulics 9803 6400 Section E 30 2 Issue 1 Control Valve JS200 JS240...
Page 264: ...30 3 Section E Hydraulics 9803 6400 Section E 30 3 Issue 1 Control Valve JS200 JS240...
Page 265: ...30 4 Section E Hydraulics 9803 6400 Section E 30 4 Issue 1 Control Valve JS200 JS240...
Page 266: ...30 5 Section E Hydraulics 9803 6400 Section E 30 5 Issue 1 Control Valve JS200 JS240...
Page 267: ...30 6 Section E Hydraulics 9803 6400 Section E 30 6 Issue 1 Control Valve JS200 JS240...
Page 268: ...30 7 Section E Hydraulics 9803 6400 Section E 30 7 Issue 1 Control Valve JS200 JS240...
Page 327: ...51 12 Section E Hydraulics 9803 6400 Section E 51 12 Issue 1 Solenoid Valve 8 spool...
Page 328: ...55 1 Schematic Section E Hydraulics 9803 6400 Section E 55 1 Issue 1 Shuttle Valve...
Page 330: ...55 3 Schematic Section E Hydraulics 9803 6400 Section E 55 3 Issue 1 Cushion Valves...
Page 481: ...7 15 Section F Transmission 9803 6400 Section F 7 15 Issue 2 Motor...
Page 482: ...7 16 Section F Transmission 9803 6400 Section F 7 16 Issue 1 Motor...