5 - 3
Section F
Transmission
9803/6400
Section F
5 - 3
Issue 2*
Motor/Gearbox
Fault Finding
(continued)
Relief Valve
Fault
Possible cause
Countermeasure or remedy
1. Motor does not
1.
Relief valve closing incorrectly.
Completely remove foreign matter, repair
run or rotation
1)
Foreign matter is clogging
damaged part and reassemble after
speed is slow.
components.
cleaning. Replace if damage or leakage is
excessive.
2)
Spring is broken
Replace the spring. Completely remove
foreign matter, repair the damaged part and
reassemble after cleaning. Replace if
damage or leakage is excessive.
2.
The cracking pressure of relief valve
Replace relief valve sub assembly.
is low.
1)
Spring is deformed
After cleaning, reassemble.
2)
Poppet orifice is clogged
2. Motor does not
1.
Relief valve closing incorrectly.
Completely remove foreign matter, repair
stop or stops
1)
Foreign matter is clogging
damaged part and reassemble after
slowly.
components.
cleaning. Replace if damage or leakage is
excessive.
2)
Spring is broken.
Replace the spring. Completely remove
foreign matter, repair the damaged part and
reassemble after cleaning. Replace if
damage or leakage is excessive.
2.
The cracking pressure of relief valve
Replace relief valve sub assembly.
is low.
After cleaning, reassemble.
1)
Spring is deformed.
2)
Poppet orifice is clogged.
3. Excessive shock
1.
Shockless function does not work.
Completely remove foreign matter, repair
when travel is
1)
Foreign matter caught up in
damaged part and reassemble after
stopped.
shockless piston section.
cleaning. Replace if damage or leakage is
excessive.
2)
Spring is deformed.
Replace the spring. Completely remove
foreign matter, repair the damaged part and
3)
Relief pressure set too high.
reassemble after cleaning. Replace if
damage or leakage is excessive. Readjust
the relief valve set pressure.
*
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...