Lull 944E-42 Service Manual - Manual (Page 84)

Axles, Drive Shafts, Wheels and Tires
5-12 944E-42
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 430-470 lb-ft (583-637
Nm).
5. Remove machine from supports.
6. Remove the Do Not Operate Tags from both the
ignition key switch and the steering wheel.
7. Drive the machine and aggressively steer and brake
several times. Re-torque the lug nuts.
5.6 BRAKES
5.6.1 Brake Disc Inspection
Check the brake disks for wear every 1,000 hours of
operation or yearly.
For more information on brake disc inspection, refer to
the appropriate axle repair manual.
a. Front Axle
1. Block all four wheels to help prevent the machine
from moving after the parking brake is disabled.
2. Remove the four capscrews securing the valve plate
cover to the cab floor. Remove the cover.
3. Attach a remote portable hydraulic pressurizing unit
to the park brake gauge port (1) on the secondary
function manifold (2) mounted on the valve plate.
Note: DO NOT turn the key switch to the ON position.
DO NOT release the parking brake switch. Oil pressure
will be lost and parking brake will be engaged.
4. Pressurize the parking brake with the pressurizing
unit. Close the needle valve on the pressurizing unit.
MAH0460
Tread “arrows” must point
forward
Install tires onto wheels to
rotate in proper direction
MY4200
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6
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10
5
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CAUTION
DO NOT exceed 650 psi (45 bar) when pressurizing
the park brake. Applying to much pressure may
damage the brake seals.
OU0742
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