jcb JS200 Service Manual page 260
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Also See for JS200:
- Operator's manual (31 pages) ,
- Service manual (51 pages) ,
- Operator's manual (31 pages)
Table of Contents
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Section E
23 - 6
Regulator Assembly (continued)
6.
Insert the pin, which is press-fitted into the lever (2)
(613), into the pilot piston groove and assemble lever
(2).
7.
Assemble the fulcrum plug so that the pin, which is
press-fitted in the fulcrum plug, is inserted in the lever (2)
pin hole. Install the locking ring (858).
8.
Insert the adjusting plug (615) and assemble the locking
ring.
Note: (1) Ensure that the fulcrum plug and adjusting plug
are inserted into the correct hole. (2) Check the feedback
lever moves smoothly and is not too loose.
9.
Assemble the return spring (654) and spring base (653)
into the spool hole and install the stop ring (814).
9803/6400
Hydraulics
Regulator JS200. JS240
Section E
23 - 6
Issue 1
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- Section E - Hydraulics
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Table of Contents
Troubleshooting
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Questions and answers
Trouble shoot no swing
To troubleshoot a no swing issue on a JCB JS200, follow these steps:
1. Check if engine starts and operates normally:
- If the engine does not start and “Electric system abnormality” is indicated, refer to Trouble No. 10.
- If the engine starts but rotation does not change with throttle, controlling engine rotation may not be possible.
2. Check hydraulic system components:
- Inspect for sufficient hydraulic oil amount; refill if low.
- Check the hydraulic oil strainer for contamination; clean or drain as needed.
- Ensure oil levels in reduction gears are adequate; refill if needed.
3. Check for mechanical or control blockages:
- Inspect the remote control valve for:
- Low secondary pressure due to low primary pressure—apply correct primary pressure.
- Damaged spring—replace the spring.
- Excessive clearance between spools and casing—replace the remote control valve.
4. Inspect motor operation:
- If motor does not run or rotates slowly:
- Check for pressurized oil; inspect pilot piping for damage.
- Remove foreign matter between plunger and body, orifice, or dumper piston and cap.
- Repair or replace damaged parts as needed.
5. Check electrical and wiring connections:
- Inspect battery terminals and alternator wiring for looseness or corrosion; tighten or replace as needed.
These checks cover both hydraulic and electrical causes that could lead to a no swing condition.
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