Gradall G6-42P (91404003_Before 0160004017) Operation Manual - Manual (Page 46)

TO RELEASE PARKING BRAKE
MERITOR AXLE
1. Position unit on level ground, lower attachment to approximately one foot
from ground, move forward/reverse lever to “Neutral,” apply parking brake
and stop engine.
2. Block all wheels to prevent inadvertent movement.
Figure 20-2
3. Working one side at a time, remove three release screws and spacers from
side of differential housing (located at 12 o’clock, 4 o’clock and 8 o’clock).
4. Put spacers aside and install release screws. Tighten each screw by hand
until it just makes contact with guide pin.
5. Working carefully, tighten each release screw only 1/4 turn (90°) at a time,
in sequence, until all three screws have been turned one full turn (360°
[approximately 50 ft.-lb.]). Larger turns could cause components to bind
and cause brake failure.
6. Repeat this procedure on other side of differential. Parking brake should be
released.
TO RESTORE PARKING BRAKE
1. Make certain engine is stopped and all wheels are blocked.
2. Loosen each release screw, only 1/4 turn at a time, in sequence, until each
screw has lost contact with guide pin. Then remove release screws.
3. Install previously removed spacer over bolt, then install release screws and
tighten.
4. Repeat procedure on other side of differential. Parking brake should be restored
to operation.
A A
RELEASE
SCREW
SPACER
GUIDE PIN
RELEASE
SCREW
SECTION A A
20.1