154
SJ82 T, SJ86 T
229040ABA
Section 4 – Troubleshooting Information
Hydraulic System
1.
Stuck or defective platform level down valve 4H-
41.
Clean valve. Check operation of valve. Repair or
replace valve as required.
2.
Stuck or defective dual check valve DCV2.
Clean valve. Check O-rings on valve. Check opera-
tion of valve. Repair or replace valve as required.
3.
Stuck or defective check valve CV7.
Clean valve. Check O-rings on valve. Check opera-
tion of valve. Repair or replace valve as required.
4.
Stuck or defective shuttle valve SV3.
Clean valve. Check O-rings on valve. Check opera-
tion of valve. Repair or replace valve as required.
5.
Stuck or defective relief valve RV3.
Set valve to specifications. Check O-rings and
clean valve. Repair or replace valve as required.
6.
Stuck or defective counterbalance valve CB7.
Clean valve. Check O-rings on valve. Repair or
replace valve as required.
7.
Plugged orifice OR2.
Check orifice. Clean if plugged or replace if defec-
tive.
8.
Defective leveling cylinder C3 or slave cylinder
C4.
Check seals on cylinder. Replace as necessary.
Replace cylinder if defective.
4.3-12 Brake will not Release
1.
Stuck or defective shuttle valve SV5.
Clean valve. Check O-rings on valve. Check opera-
tion of valve. Repair or replace valve as required.
2.
Defective or misadjusted pressure reducing valve
PR1.
Set valve to specifications. Check O-rings and
clean valve. Repair or replace valve as required.
3.
Stuck or defective brake valve 3H-26.
Clean valve. Check O-rings on valve. Check opera-
tion of valve. Repair or replace valve as required.
4.
Stuck or defective shuttle valve SV6.
Clean valve. Check O-rings on valve. Check opera-
tion of valve. Repair or replace valve as required.
5.
Defective or misadjusted relief valve RV5.
Set valve to specifications. Check O-rings and
clean valve. Repair or replace valve as required.
6.
Stuck or defective brake release override valve
V1.
Clean valve. Check O-rings on valve. Repair or
replace valve as required.
7.
Bypassing or defective brake hand pump V3.
Clean valve. Check O-rings on valve. Repair or
replace valve as required.
8.
Bypassing or defective brake cylinder BR1.
Check seals on cylinder. Replace as necessary.
Replace cylinder if defective.
4.3-13 Brake will not Engage
1.
Brake return spring or defective cylinder.
Check cylinder. Repair or replace as necessary.
2.
Brake valve 3H-26 stuck in shifted position.
Check valve. Replace if defective.
3.
Brake in axle out of adjustment.
See section 5 for brake adjustment procedure.
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