Manitowoc Grove TMS700E Service And Maintenance Manual page 263

TMS700E SERVICE MANUAL
5. Install a pressure check diagnostic quick disconnect with
gauge on the test port upstream of the inlet gauge port of
the power steering gearbox. (On older cranes,
disconnect the hydraulic line to the inlet gauge port, cap
or plug it, and temporarily install the gauge on the test
port.)
CAUTION
To prevent pump damage/failure due to heat build up, run
the engine in this configuration for a maximum of 30
seconds to 1 minute.
6. Start engine. Slowly drive the crane forward and turn the
wheels to full left turn against the axle stop. Verify solid
contact against axle stop; screw in the power steering
gearbox's front plunger to decrease travel or screw it out
to increase travel as needed. Check pressure; it should
not exceed 62 bar (900 psi).
7. If the pressure is too high or the axle stop is not making
contact with the axle, adjust the front plunger so the axle
stop makes contact with the axle and the pressure
reading does not exceed 62 bar (900 psi). Screw the
front plunger in to decrease travel or screw it out to
increase travel so pressure reading does not exceed
62 bar (900 psi).
NOTE: Do not attempt to set the relief pressure with the
tires off the ground.
8. Slowly drive the crane forward and turn the wheels to full
right turn against the axle stop. Verify solid contact
against axle stop; screw in the power steering gearbox's
rear plunger to decrease travel or screw it out to
increase travel as needed. Check pressure; it should not
exceed 62 bar (900 psi).
9. If the pressure is too high or the axle stop is not making
contact with the axle, adjust the rear plunger so the axle
stop makes contact with the axle and the pressure
reading does not exceed 62 bar (900 psi). Screw in the
rear plunger to decrease travel or screw it out to
increase travel so pressure reading does not exceed
62 bar (900 psi).
NOTE: Do not attempt to set the relief pressure with the
tires off the ground.
10. Stop engine. Verify both plungers are screwed into the
gearbox far enough so the head of each plunger is at
least 4 mm (0.16 in) below the top of its threaded hole. A
plunger screwed in less deeply than this could cause or
suffer damage.
11. Remove diagnostic gear and reinstall cap on test port.
(On older cranes, re-connect the hydraulic line to the
inlet gauge port.)
12. Ensure the top surface of each saddle assembly is
parallel with the bottom surface of the carrier frame by
Grove
measuring the distance at the front and rear of the
saddle assemblies. If necessary, adjust the height
control valves to raise or lower the saddle assemblies
into a parallel position.
Front Air Ride Adjustment
NOTE:
1. Start unit and charge the air system until the air
compressor shuts off and the air pressure gauges read
130 +/- 10 psi.
2. Turn suspension inflation switch on.
3. Install digital level on bottom of frame rail above the
trailing arm and zero level.
4. Next set digital level on top of the trailing arm and adjust
the ride height until a reading of 0.0° ± 0.5° is achieved.
5. Repeat procedure on frame and trailing arm on the other
side of the frame.
Published 01-29-2015, Control # 512-01
UNDERCARRIAGE
This model is equipped with an air ride front and
rear suspension. It is necessary to periodically
inspect the suspension for proper adjustment.
Operating this machine with incorrect ride height
adjustments could result in poor ride quality or
p o s s i b l e d a m a g e t o s u s p e n s i o n a n d a x l e
components.
FIGURE 8-7
8
FIGURE 8-8
8-11