Hitachi ZW 550-6 Operator's Manual page 282

Procedures
d
WARNING:
 Once the parking brake is released, the machine
becomes impossible to stop with the parking
brake system.
 Chock all tires to prevent the machine from
moving.
 Before restarting to operate the machine, consult
your nearest authorized dealer to have the
parking brake adjusted.
1. Remove lock bolt (3) on the front differential and
remove flange nuts (4) from both parts (A).
Detail of A
2. Loosen hose band (5) and remove rubber cap (6)
from manual release bolt (2).
3. Install the flange nuts, which were removed at step 1,
to manual release bolt (2).
4. Tighten flange nuts (4) alternately and evenly until
contacting with housing (1).
5. Then, tighten flange nuts (4) until you feel the nuts
are rather tight; the brake is released.
f
NOTE: After contacting with housing (1), approximately
3 or 4 additional turns of the flange nuts will release the
parking brake.
6. After finishing the work, install flange nuts (4) to the
original positions. Secure flung nuts (4) with lock
bolts (3). Install rubber caps (6) to manual release
bolts (2) and secure rubber caps (6) with hose bands
(5).
TRANSPORTING
95Z7-6-8-2
6-8
TOP
115Z7-6-8-1
115Z7-6-8-2