34 - 2
Section E
Hydraulics
9803/6400
Section E
34 - 2
Issue 1
Port Relief Valve JS200/JS240
Dismantling
Remove the plug 2 and disassemble the sleeve 3, main poppet 4, piston 5 and springs 7, 8.
Loosen the adjuster nut 10 and take out the pilot poppet 6 and spring 9.
Cleaning, Inspection
Clean all the parts with clean oil and dry with compressed air. Inspect each part.
1.
Check that there are no defects on the seat surface of each poppet and sleeve end and that the contact surface is even.
2.
Check that the main poppet 4 and sleeve 3 slide smoothly. Also check there are no scratches on the main poppet outer
periphery and sleeve inner surface.
3.
Check that the springs are not broken, deformed or worn.
4.
Check that there is no foreign matter clogging the piston 5 hole. The end seat contact surface should be even.
5.
Check that the 'O'-ring and backup rings are not worn or deformed.
If a small defect is found in the above inspection, remove it by lapping.
If an abnormal part is found, replace the relief valve assembly.
Assembly
Install the 'O'-ring 16 and backup ring 17 (2 pcs) to the main poppet 4, assemble the piston 5 and insert into the sleeve 3.
After attaching 'O'-ring 12, backup ring 13 (2 pcs) and 'O'-ring 14 to the plug 2, assemble the sleeve 7, 8 mentioned above.
Tighten cap 1. (Torque 78~88 Nm) (57.84-65.07 lb/ft).
Insert the pilot poppet 6 and spring 9 into the plug 2 and temporarily assemble the adjuster nut 10 and 'O'-ring 11.
Attach 'O'-ring 14 to the cap 1 and assemble into the valve housing. Adjust pressure according to its application, see "Pressure
Testing".
Do not reuse 'O'-rings and backup rings. Replace with new parts.
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...