Manitowoc Grove RT9130E-2 Service And Maintenance Manual page 293

RT9130E-2 SERVICE MANUAL
Rear Steering System
Table 8-2
Troubleshooting
Symptom
1. Rear steering inoperative.
2. Hard to steer left and right.
3. Steering is erratic left and right.
Grove
Probable Cause
a. Hydraulic oil low.
b. Clogged, broken, or loose
hydraulic lines or fittings.
c. Steer cylinder locked.
d. Defective control valve.
e. Defective steer cylinder(s).
f. Lack of electrical signal
a. Hydraulic oil low.
b. Clogged or loose hydraulic
lines or fittings.
c. Defective steering
valve.
d. Defective hydraulic pump.
e. Clogged or loose hydraulic
lines or fittings.
f. Defective steer cylinder.
g. Damaged relief.
a. Hydraulic oil low.
b. Clogged or loose hydraulic
lines or fittings.
c. Defective steering
valve.
d. Defective hydraulic pump.
Published 11-22-2016, Control # 345-12
UNDERCARRIAGE
Solution
a. Check system for leaks. Make
r e p a i r s a s n e e d e d . F i l l
reservoir.
b. Clean, tighten, or replace
lines or fittings.
c. Repair or replace cylinders.
R e f e r t o y o u r M a n i t o w o c
Crane Care Parts Manual.
d. Repair or replace valve.
e. Repair or replace cylinder(s).
f. Check electrical connections/
wiring
a. Check system for leaks. Make
r e p a i r s a s n e e d e d . F i l l
reservoir.
b. Clean or tighten lines or
fittings.
control c. Repair or replace valve.
d. Repair or replace pump.
e. Clean or tighten lines or
fittings.
f. Repair or replace cylinder.
g. Replace relief valve.
a. Check system for leaks. Make
r e p a i r s a s n e e d e d . F i l l
reservoir.
b. Clean or tighten lines or
fittings.
control c. Repair or replace valve.
d. Repair or replace pump.
8
8-7