JLG 4017 Service Manual - Manual (Page 75)

5.13 4017
Axles, Drive Shafts, Wheels and Tires
5.6 BRAKES
5.6.1 Brake Disk Inspection.
Check the brake disks for wear every
1,000 hours of operation or yearly.
If the brake disks require service due to
wear, the axle should be checked,
serviced and repaired only by
experienced service technicians who are aware of all
safety instructions and particular component features.
a. Front and Rear Axles
1. Park the machine on a firm, level surface, fully
retract the boom, lower the boom, place the
transmission control lever in the (N) NEUTRAL,
engage the park brake, straighten all wheels and shut
the engine OFF.
2. Place an Accident Prevention Tag on both the
ignition key switch and steering wheel, stating that
the machine should not be operated.
3. Remove the battery negative (-) cable from the
battery negative (-) terminal.
4. Block all four wheels to help prevent the machine
from moving after the park brake is disabled.
5. Remove the oil-level plug on each side of the axle.
6. Have an assistant sit in the cab and apply the
brakes, keeping pressure applied.
7. Using a feeler gauge, check the gap (1) between the
brake disks. if the gap (2) is less than
4,5 mm (0.18 in), 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.
8. Repeat steps 3 and 4 for the other side of the axle.
9. Fill the axle with Mobilfluid 424® ISO Grade 46
through the axle fill hole (3) until the oil level is even
with both axle level holes (4).
10. 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. Refer to Section 2.4, “Fluids, Lubricants
and Capacities.”
WARNING:
BLOCK ALL FOUR
WHEELS. Failure to do so could result in death
or serious injury from machine roll-away
OH2690
1000
MT2840
1
2
MZ1030
4
3