Gradall 544D-10 (9136-4142) Operation Manual - Manual (Page 44)

16.1
TO RELEASE PARKING BRAKE
MERITOR AXLE
1. Position unit on level ground, lower attachment to approximately one foot
(.3m) from ground, move forward/reverse lever to “Neutral,” apply parking
brake and stop engine.
2. Block all wheels to prevent inadvertent movement.
Figure 16-2
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 lightly
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. (67n.m). 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 and 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