151
SJ82 T, SJ86 T
229040ABA
Hydraulic System
Section 4 – Troubleshooting Information
1.
Stuck or defective differential sensing valve
DSV3.
Clean valve. Check O-rings on valve. Check opera-
tion of valve. Repair or replace valve as required.
2.
Stuck or defective boom extend valve 3H-38.
Clean valve. Check operation of valve. Repair or
replace valve as required.
3.
Stuck or defective check valve CV10.
Clean valve. Check O-rings on valve. Check opera-
tion of valve. Repair or replace valve as required.
4.
Stuck or defective check valve CV6.
Clean valve. Check O-rings on valve. Check opera-
tion of valve. Repair or replace valve as required.
5.
Stuck or defective relief valve RV4.
Set valve to specifications. Check O-rings and
clean valve. Repair or replace valve as required.
6.
Return valve V4 stuck in the open position.
Clean valve. Check operation of valve. Repair or
replace valve as required.
7.
Stuck or defective counterbalance valve CB5.
Clean valve. Check O-rings on valve. Repair or
replace valve as required.
8.
Return valve V5 stuck in the closed position or is
defective.
Clean valve. Check operation of valve. Repair or
replace valve as required.
9.
Defective extension cylinder C2.
Check seals on cylinder. Replace as necessary.
Replace cylinder if defective.
4.3-8 No Jib Up
1.
Stuck or defective proportional flow enable valve
2H-42.
Clean valve. Check O-rings on valve. Check opera-
tion of valve. Repair or replace valve as required.
2.
Stuck or defective check valve CV9.
Clean valve. Check O-rings on valve. Check opera-
tion of valve. Repair or replace valve as required.
3.
Stuck or defective jib up valve 4H-35.
Clean valve. Check operation of valve. Repair or
replace valve as required.
4.
Stuck or defective counterbalance valve CB9.
Clean valve. Check O-rings on valve. Repair or
replace valve as required.
5.
Defective jib cylinder C5.
Check seals on cylinder. Replace as necessary.
Replace cylinder if defective.
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