Manitowoc Grove RT9130E-2 Service And Maintenance Manual

Grove Published 11-22-2016, Control # 345-12 2-11
RT9130E-2 SERVICE MANUAL HYDRAULIC SYSTEM
2
2. Slow response. a. Low hydraulic oil level. a. Check system for leaks. Make repairs
as needed. Fill reservoir.
b. Hydraulic oil
temperature too high
(watery thin oil) or too
low (thick sluggish oil).
b. If too low, warm up system. As
needed, troubleshoot cooler circuit. If
too high, troubleshoot cooler circuit.
Likely suspects are in-line check
valve and related hydraulic circuits.
c. Faulty pump
section(s).
c. Repair or replace pump section(s) or
entire pump.
3. Pump noise accompanied
by hydraulic oil foaming in
reservoir.
a. Low hydraulic oil level. a. Check system for leaks. Make repairs
as needed. Fill reservoir.
b. Excessive engine
speed.
b. Regulate engine speed.
c. Air entering at suction
lines.
c. Check all lines for security and
proper repair. Tighten, repair, or
replace as needed.
4. Excessive pressure
buildup.
a. System relief valve set
too high.
a. Using adequate pressure gauge,
adjust system relief valve as
necessary.
b. Restricted pump-to-
control valve supply
line.
b. Clean, repair, or replace line as
necessary.
5. Specific hydraulic system
(lift, hoist, telescope,
swing) not working.
a. Leak in system. a. Check system for leaks. Make repairs
as needed. Fill reservoir.
b. Faulty hydraulic
remote control valve.
b. Adjust or replace valve.
c. Faulty directional
control valve.
c. Replace valve.
d. Poorly adjusted
control in circuit.
d. Troubleshoot circuit with schematic.
Adjust hydraulic component per
schematic.
e. Faulty hydraulic
cylinder, motor, or
valve.
e. Replace faulty component.
Symptom Probable Cause Solution

Manitowoc Grove RT9130E-2 Specifications

General

Brand	Manitowoc
Model	Grove RT9130E-2
Category	Construction Equipment
Language	English