To Adjust Front Axle Service Brakes; To Adjust Parking Brakes - Genie GTH-636 Service Manual

Section 4 • Repair Procedures
AXLE
How to Adjust the Front Axle
Service Brakes
GTH-1048 and GTH-1056
When using the GTH-1048 and GTH-1056, most of
the braking is performed by the front axle. As a
result, the rear axle service brakes will rarely need
to be adjusted. Should adjustment of the rear axle
service brakes be required, contact the Genie
Industries Service Dept.
1 Chock the tires.
2 Start the engine and allow the engine to idle.
3 Release the parking brake.
4 At the front axle, locate and remove the covers
over the service brake adjustment screws.
Refer to the following illustrations.
5 Turn both of the four-sided service brake
adjustment screws in a counter clockwise
direction until a slight resistance is detected.
6 Turn both of the four-sided service brake
adjustment screws 3.75 turns in a clockwise
direction.
7 Install the covers over the service brake
adjustment screws. Securely tighten the
fasteners. Do not over tighten.
4 - 74 GTH-636 • GTH-644 • GTH-842 • GTH-844 • GTH-1048 • GTH-1056
How to Adjust the Parking Brakes
GTH-636, GTH-644, GTH-842 and GTH-844
1 Chock the tires.
2 Start the engine and allow the engine to idle.
3 Release the parking brake.
4 Remove the top inspection cover from the
chassis at the fork end of the machine. Locate
the parking brake cylinder on top of the drive
axle.
5 Loosen the lock nut securing the threaded
portion of the parking brake adjustment rod.
6 Turn the threaded rod of the cylinder out of the
cylinder several turns.
7 Turn the threaded rod into the cylinder just until
there is zero clearance between the bushing of
the threaded rod, the lever actuator and the
lever bracket.
Note: Turning the threaded rod too far into the
cylinder will move the parking brake lever, resulting
in a parking brake which does not function
correctly. Do not over tighten the rod.
8 While holding the cylinder rod in position,
securely tighten the cylinder rod jam nut.
9 Inspect the parking brake lever to confirm that
the lever is not binding or in contact with axle
casting.
10 Set the parking brake and stop the engine.
June 2007
REV D
Part No. 97487