JLG 534D-10 - Manual (Page 97)

5.13 534D-9, 534D-10 & 544D
Axles, Wheels and Tires
5.7 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.
5.7.1 Brake Disk Inspection.
1. Securely block all four wheels.
2. Remove the oil-level plug (1) on each side of the
axle.
3. Have an assistant sit in the cab and apply the
brakes, keeping pressure applied.
4. Using a feeler gauge, check the gap (2) between the
brake disks. if the gap is less than 0.18 in (4,5 mm),
replace the brake disks.
Note: If the brake disks are worn beyond their tolerance,
the brake disk must be replaced on both sides of the axle
at the same time.
5. Repeat steps 3 and 4 for the other side of the axle.
6. Fill the axle with Mobilfluid 424 ® (ISO 46) through the
axle fill hole (3) until the oil level is even with both
axle level holes (1).
7. See chart of approved fluids. The axle capacity is
19.6 qt (18,5 Liters) for the front axle. Fill axle slowly,
the oil has to run across the differential. Allow time
for the oil to run across the differential. Axle level is
correct when oil is up to both level plugs.
5.8 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.
Towing is only possible by using the "towing" feature built
into the hydrostatic pump and disengaging the park brake
on the front axle.
1. Securely block all four wheels.
2. Locate the six brake release bolts (1) at the base of
the front axle. Mark a line on the socket so you can
accurately count the number of turns each bolt
makes as you perform the procedure.
3. Alternately screw the release bolts clockwise in 1/2
turn increments. Turn until resistance is felt.
4. Alternately screw the bolts clockwise 5 to 5 1/2 turns
in 1/2 turn increments.
5. Hold the base of the reverse relief valve (2) using a
32mm (1-1/4”) wrench. Use a 22mm (7/8”) wrench to
turn the second section of the reverse relief valve (3)
two complete turns out. Repeat the procedure on the
forward relief valve (4).
6. Carefully remove the blocking from each tire and tow
the machine to a secure location.
Note: This procedure does not alter any relief settings.
WARNING
ALL WHEELS must be blocked to prevent machine
from moving or rolling away.
MX0600
1 1
3
MX0610
2
WARNING
ALL WHEELS must be blocked to prevent machine
from moving or rolling away.