SkyTrak 3606 Service Manual - Manual (Page 119)

Axles, Wheels and Tires
5-9
11. Torque the lug nuts to 370 lb/ft (500 Nm) using the
alternating pattern depicted in Fig. 5–5.
Figure 5–5. Lug nut torque sequence.
12. Carefully remove the jack, hoist or overhead crane
and sling supporting the axle.
13. Carefully raise the vehicle using a suitable jack or
hoist. Remove the supports from beneath the frame
and lower the vehicle to the ground.
14. Remove the blocks from the front and rear of both
tires on the other axle.
15. Uncap and connect the steering and brake lines at
their axle fittings.
Note: Always use new flat-faced O-rings when connect-
ing hydraulic fittings on the Model 3606.
16. Check wheel end and hydraulic reservoir oil levels.
17. Reactivate the parking brake on the front axle if it
was deactivated earlier. Refer to Section 2 for
information on parking brake reactivation.
18. Start the engine. Turn the steering wheel several
times lock to lock, operate the frame tilt function
several times in both directions, and check the
function of the brakes. Check for hydraulic leaks and
tighten or repair as necessary.
5.2.2 Axle Service and Troubleshooting
Detailed axle service instructions (covering axle, brakes
and wheel-end safety, repair, disassembly, reassembly,
adjustment and troubleshooting information) are pro-
vided in the Carraro Model 26.25M Maintenance and
Repair Manual, part number CA355027 (limited-slip front
axle with park brake) and CA355028 (rear axle).
The axle should be checked, serviced and repaired only
by experienced service technicians who are aware of all
safety instructions and particular component features.
5.3 WHEELS AND TIRES
Welded 13.00 - 24 steel wheels are used on this vehicle.
The specified size and ply rating (star rating for radial
tires) for this vehicle is 13.00 - 24, 12 PLY. Make sure the
replacement tire is of the same size and ply rating (star
rating for radial tires) as all the other tires. A higher ply
rating (star rating for radial tires) can be used, but only
when all four tires have the same ply rating.
The tires are filled with air only when the vehicle leaves
the factory. Hydrofill (a calcium chloride solution), foam
fill, or other tire-filling substances are not added to the
tires as they alter the weight, stability and handling char-
acteristics of the vehicle, especially under load. Large-
bore valve stems are used to help expedite tire inflation
and deflation. An inner tube may be used if a tire does
not provide an airtight seal. Check tire inflation pressures
when the tires are cold. When mounting a tire on the
wheel, the tire must be mounted on the wheel respective
of the directional tread pattern of the tire; this produces a
left or right tire and wheel assembly.
The wheel and tire assemblies must be installed with the
directional tread pattern “arrows” facing in the direction of
forward travel (Fig. 5–4 and Fig. 5–6).
WARNING: Avoid prolonged engine operation
in closed areas with inadequate ventilation.
Failure to properly ventilate exhaust fumes can
result in death or severe personal injury.
WARNING: Risk of serious personal injury.
Before starting the engine, tighten all hydraulic
connections and remove all tools from the vehi-
cle. NEVER check for leaks using any part of
the human body; use a piece of cardboard or
wood instead. Wear heavy, protective gloves
and eye protection.
OS0740
1
10
5
4
8
2
9
6
3
7
WARNING: Risk of serious personal injury or
death. Mismatched tire sizes, ply ratings or mix-
ing of tire types (radial tires with bias-ply tires)
may compromise vehicle stability and may
result in vehicle tipover.
Model 3606 • Origin 10/99