TM 5-3810-307-24-1-1
Check that steer cylinders have a minimum of 0.25 in
b.
Adjust the lock cylinder so that the rear
(6.35 mm) or a maximum of 0.28 in. (7.11 mm) with
wheels remain straight when the
the tie-rod(s) and/or steering arm(s). Check that
steering lock cylinder is engaged
there is a minimum of 0.50 in. (12.7 mm) clearance
(pinned).
between brake chambers and axle. Adjust axle
c.
Torque mounting bolts to 165 pounds-
stops as necessary to achieve clearances.
foot (224 Nm).
CAUTION
d.
Check that rear axle toe-in was not
Both wheel ends must firmly contact axle
affected.
stops. Failure to adjust steering gear
e.
Perform step
6 in REAR AXLE
limiters can result in damage to the steering
ALIGNMENT
AND
gear box.
procedures.
8.
Turn steering wheel full left and verify that
BOOM REST SWITCH ADJUSTMENT.
wheel end pushes firmly against left side axle stop
and that all clearances are taken up by the pressure.
Adjust the boom rest switch so that switch activates
If wheel end is not contacting stop:
when the boom is 0.5 inches (12.7 mm) from the
boom rest. Assure the axle lockout valves open
a.
Shut down engine.
when the carrier ignition switch is positioned to 1
b.
Remove plug from upper end of steering
(run) and the boom is in the boom rest. Refer to
gear.
c.
Turn adjusting ring in direction shown to
HYDRAULIC
POWER
AND
reduce gap between wheel end and axle
ADJUSTMENT (FRONT AXLE).
stop, refer to Detail D-D.
NOTE
d.
Install plug and torque to 52 pounds-foot
(71 Nm).
The following procedures are referenced
e.
Restart engine and repeat step 8 as
necessary until left wheel pushes firmly
1.
Engage the hydraulic pump. Start the engine
against axle stop and all clearances are
from the superstructure.
taken up.
2.
Extend the outrigger beams and jack cylinders
9.
Turn steering wheel full right and verify that
to lift the crane off the ground. Shut off the engine in
wheel end pushes firmly against right wheel axle
the superstructure and start the engine up again
stop and that all clearances are taken up by the
from the carrier.
pressure. If wheel end is not contacting stop:
3.
Loosen steer cylinder ball end clamps and
a.
Shut down engine.
rotate steer cylinders so that fittings are vertical.
b.
Remove plug from lower end of steering
4.
Open bleed fittings on each steer cylinder, turn
gear.
steering wheel from lock to lock, and bleed each
cylinder until no air appears (Hydraulic fluid should
c.
Turn adjusting ring in direction shown to
flow from the bleed port in a steady stream). Close
reduce gap between wheel end and axle
all bleed fittings.
stop, refer to Detail D-D.
5.
Open air/bleed fittings on front side of steering
d.
Install plug and torque to 52 pounds-foot
gear, turn steering wheel from lock to lock, and bleed
(71 Nm).
steering gear until no air appears. Close air/bleed
fittings.
e.
Restart engine and repeat step 9 as
necessary until right wheel end pushes
6.
Rotate steer cylinders back to correct installed
firmly against axle stop and all
position and tighten ball end clamps.
clearances are taken up.
7.
Turn steering wheel fully in both directions.
2-4-8
