No Turret Rotate - Skyjack SJ82 T Service Manual

Hydraulic System
1. Stuck or defective differential sensing valve
DSV2.
2. Stuck or defective lift up valve 4H-13.
3. Stuck or defective shuttle valve SV2.
4. Stuck or defective check valve CV5.
5. Stuck or defective counterbalance valve CB3.
6. Defective lift cylinder C1.

4.3-5 No Turret Rotate

Left Rotate
1. Stuck or defective differential sensing valve
DSV1.
2. Stuck or defective rotate left valve 4H-32.
3. Stuck or defective shuttle valve SV1.
4. Stuck or defective check valve CV4.
5. Stuck or defective relief valve RV2.
6. Stuck or defective shuttle valve SV7.
7. Stuck or defective counterbalance valve CB2.
8. Turret rotate brake BR1 not releasing.
9. Worn or defective swing drive motor M2.
Right Rotate
1. Stuck or defective differential sensing valve
DSV1.
2. Stuck or defective rotate left valve 4H-33.
3. Stuck or defective shuttle valve SV1.
SJ82 T, SJ86 T
Section 4 – Troubleshooting Information
Clean valve. Check O-rings on valve. Check opera-
tion of valve. Repair or replace valve as required.
Clean valve. Check operation of valve. Repair or
replace valve as required.
Clean valve. Check O-rings on valve. Check opera-
tion of valve. Repair or replace valve as required.
Clean valve. Check O-rings on valve. Check opera-
tion of valve. Repair or replace valve as required.
Clean valve. Check O-rings on valve. Repair or
replace valve as required.
Check seals on cylinder. Replace as necessary.
Replace cylinder if defective.
Clean valve. Check O-rings on valve. Check opera-
tion of valve. Repair or replace valve as required.
Clean valve. Check operation of valve. Repair or
replace valve as required.
Clean valve. Check O-rings on valve. Check opera-
tion of valve. Repair or replace valve as required.
Clean valve. Check O-rings on valve. Check opera-
tion of valve. Repair or replace valve as required.
Set valve to specifications. Check O-rings and
clean valve. Repair or replace valve as required.
Clean valve. Check O-rings on valve. Check opera-
tion of valve. Repair or replace valve as required.
Clean valve. Check O-rings on valve. Repair or
replace valve as required.
Inspect brake for worn seals or broken compo-
nents. Repair and replace as necessary.
Check motor. Repair or replace if defective.
Clean valve. Check O-rings on valve. Check opera-
tion of valve. Repair or replace valve as required.
Clean valve. Check operation of valve. Repair or
replace valve as required.
Clean valve. Check O-rings on valve. Check opera-
tion of valve. Repair or replace valve as required.
229040ABA
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