Gradall 534B (9020-7317) Service Manual - Manual (Page 42)

3. Pull Mico Lock lever back to lock position (lever
vertical) and then release brake pedal.
To Release Mico Lock
Release Mico Lock by pushing lever forward to
release position (lever horizontal).
Parking Brakes
The parking brake locks the front axle by means of a
cable actuated brake caliper acting on a brake disc
attached to the axle input yoke.
To apply the parking brake, pull parking brake
lever to rear (toward vertical position).
STEERING SYSTEM
Ninety degree rear wheel power steering is provided
to reduce operator fatigue and to permit high
maneuverability in close quarters.
To release parking brake, push parking brake
lever forward (to horizontal position).
Parking brake tension can be increased by turning
knob at end of lever clockwise.
It is important that the operator practice
maneuvering the handler in a safe, open area until
he becomes thoroughly familiar with steering
response and clearance required for tailswing and
load when turning.
Always apply parking brake before leaving
cab. Neither leaving the unit in gear nor
applying the Mico Lock will prevent unit
from rolling. Refer to page 17 for parking
procedure.
Be alert for any increase in effort needed to
steer. If any difference is noted, notify
maintenance personnel immediately for
correction. If power assist feature should
fail for any reason IT WOULD BECOME
VERY DIFFICULT TO STEER. For this
reason it is extremely important that you
NEVER TURN ENGINE OFF WHILE
TRAVELING.
In the event power steering fails, stop as
soon as possible. Do not drive unit until
problem has been corrected.
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