JLG G6-42A Service Manual - Manual (Page 100)

Axles, Drive Shafts, Wheels and Tires
5-12 G6-42A, G9-43A, G10-43A
5.5.2 Installing Wheel and Tire Assembly
onto Machine
Note: The wheel and tire assemblies must be installed
with the directional tread pattern “arrows” facing in the
direction of forward travel.
1. Position wheel onto studs on wheel end of axle.
2. Install wheel lug washers.
3. Start all nuts by hand to prevent cross threading. DO
NOT use a lubricant on threads or nuts.
4. Tighten lug nuts in an alternating pattern as
indicated in figure. Torque to 350-400 lb-ft
(475-542 Nm).
5. Remove machine from supports.
5.6 BRAKES
Check the brake disks for wear every 1,000 hours of
operation or yearly.
For more information on brake disk inspection, refer to
the appropriate axle repair manual.
5.7 TOWING A DISABLED MACHINE
Towing a disabled machine should only be attempted as
a last resort, after exhausting all other options. Make
every effort to repair the machine, and move it under its
own power, before using the emergency towing
procedures outlined below.
Note: Block the wheels of the machine BEFORE
attempting to release the park brake. Once the park
brake is released the machine’s park brake AND
service brakes are inoperable.
5.7.1 Manually Releasing the Park Brake
a. Before S/N 0160000847
1. On one side of the axle, remove the three plugs from
the differential housing.
2. Tighten each release screw (6) revealed by the
plugs, lightly until it just makes contact with the guide
pin.
3. Carefully tighten each release screw a 1/4 turn at a
time in sequence until all three have been turned
one full turn 360°.
Note: Larger turns could cause components to bind and
cause brake failure. DO NOT over tighten.
4. Repeat steps 1 thru 3 for the other side of the
differential.
MAH0460
TREAD “ARROWS” MUST
POINT FORWARD
INSTALL TIRES ONTO
WHEELS TO ROTATE IN
PROPER DIRECTION
MY4200
1
3
8
6
9
4
10
5
2 7
MY0260
6