Steering System; Description; Maintenance - Manitowoc Grove TMS700E Service And Maintenance Manual

UNDERCARRIAGE
6. Once all four corners are adjusted, drive the machine
forward at a slow speed and "tap" the brake pedal to
bounce the machine. Do this 3 times going forward, then
3 times in reverse.
7. Repeat steps 3 through 5 until all the trailing arms
remain adjusted within 0.5° of level.
Table 8-1
Symptom
1. Oil leaking at output shaft of
steering gear.
2. Oil leaking at actuating shaft of
steering gear.
3. Oil leaking at supply pump drive
shaft.
4. Lubricant milky or
appearance.
5. Oil forced out of reservoir or
foaming.
6. Engine oil in power steering
reservoir (gear driven pump).
8-12
Probable Cause
a. Damaged sector shaft seal.
a. Worn or damaged oil seal.
b. Damaged actuating shaft seal
surface.
a. Damaged oil seal.
b. Oil seal-heat damaged.
c. Loose or damaged bushing
on pump drive shaft.
white in a. Water entry through reservoir
venting system.
a. Clogged oil filter.
b. Air in system.
c. Relief plungers of steering
gear not adjusted properly
c r e a t i n g h i g h o p e r a t i n g
temperatures.
d. Air leak in suction side of
supply pump.
e. Pump cavitation.
f. Oil overheating.
a. Faulty seal at pump drive
shaft.
b. Faulty seal at accessory shaft
driving supply pump.
Published 01-29-2015, Control # 512-01
TMS700E SERVICE MANUAL

STEERING SYSTEM

Description

The steering system is comprised of the steering gearbox,
steer pump, and two steer cylinders. The steering gearbox
provides for full time hydraulic steering, but still allows for
manual steering in the event of a system malfunction.

Maintenance

Troubleshooting
a.
a.
b. Replace
a.
b. Check operating temperature.
c.
a.
a.
b. Bleed air from the system.
c.
d. Reference
e.
f.
a.
b. Repair accessory drive.
Solution
Replace sector shaft.
Replace actuating shaft seal.
bearing cap,
actuating shafts assembly.
Replace oil seal.
Repair pump per pump
service instruction.
Clean vent system or replace
cap assembly.
Change oil and oil filter.
Check for air leak on suction
side of supply pumps.
Adjust relief plungers.
pump servicing
instruction.
Check for restriction in pump
supply.
Check for restriction
steering gear return.
Repair pump.
in