Manitowoc Grove RT9130E-2 - Page 293

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