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SJ30AJE, SJ30ARJE 196274AF
Hydraulic System Section 4 – Troubleshooting Information
4.3-4 No Riser Boom Up
1. Stuck or defective riser up valve 2H-31. Clean valve. Check operation of valve. Repair or
replace valve as required.
2. Stuck or defective check valve CV5. Clean valve. Check O-rings on valve. Check
operation of valve. Repair or replace valve as
required.
3. Stuck or defective riser down valve 2H-30. Clean valve. Check operation of valve. Repair or
replace valve as required.
4. Stuck or defective relief valve RV7. Set valve to specifications. Check O-rings and
clean valve. Repair or replace valve as required.
5. Defective riser cylinder C3. Check seals on cylinder. Replace as necessary.
Replace cylinder if defective.
4.3-5 No Riser Boom Down
1. Stuck or defective riser down valve 2H-30. Clean valve. Check operation of valve. Repair or
replace valve as required.
2. Plugged or defective orifice OR5. Check orifice. Replace if plugged or defective.
4.3-6 No Turret Rotate Left
1. Stuck or defective rotate left valve 5H-32. Clean valve. Check operation of valve. Repair or
replace valve as required.
2. Stuck or defective relief valve RV3. Set valve to specifications. Check o-rings and clean
valve. Repair or replace valve as required.
3. Worn or defective swing drive motor RA1. Check motor. Repair or replace if defective.
4.3-7 No Turret Rotate Right
1. Stuck or defective rotate right valve 5H-33. Clean valve. Check operation of valve. Repair or
replace valve as required.
2. Stuck or defective relief valve RV3. Set valve to specifications. Check O-rings and
clean valve. Repair or replace valve as required.
3. Worn or defective swing drive motor RA1. Check motor. Repair or replace if defective.
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