SkyTrak 3606 Service Manual - Manual (Page 117)

Axles, Wheels and Tires
5-7
IMPORTANT: Clear the work area of all debris, unnec-
essary personnel, etc. Allow sufficient space to raise the
vehicle and to remove the axle.
1. Park the vehicle on a firm, level surface. Level the
vehicle, ground the attachment, place the travel
select lever in NEUTRAL (N), engage the park brake
switch, straighten all wheels and shut the engine
OFF. Allow the hydraulic fluid to cool.
2. If the axle will be disassembled after removal, place a
suitable receptacle under the axle drain plug.
Remove the drain plug and allow the axle oil to drain
into the receptacle. Transfer the used axle oil into a
suitable covered container and label the container as
used oil. Dispose of properly.
3. Label, disconnect and cap the steering and brake
lines at the axle. Wipe up any spilled oil.
4. Block the front and rear of both tires on the axle that
is not being removed. Ensure that the vehicle will
remain in place during axle removal before proceeding.
5. Raise the vehicle using a suitable jack or hoist. Place
suitable supports beneath the frame and lower the
vehicle onto the supports. Ensure that the vehicle will
remain in place during axle removal.
6. Support the axle that is being removed with a
suitable jack, hoist or overhead crane and sling.
DO NOT raise the axle or the vehicle.
7. Mark and remove both wheel and tire assemblies
from the axle that is being removed.
Note: The wheel and tire assemblies must be re-
installed later with the directional tread pattern “arrows”
facing in the direction of forward travel.
8. Mark the axle driveshaft flange yoke and unbolt it
from the axle.
Note: The drive shaft assembly is a balanced assembly.
Mark the yoke and axle so that these components can be
returned to their original positions when reinstalled. The
yokes at each end of the drive shaft must be in the same
plane to help prevent excessive vibration (Fig. 5–3).
9. Remove the 5/16-18 x 3-1/2" hex-head capscrew
(item 5, Fig. 5–2) and 5/16-18 hex-lock nut (4)
securing the lower position 1-1/2" diameter cylinder-
mount pin (3) to the cylinder (15). Tap out the cylinder
mount pin, and move the cylinder (15) to prevent it
from interfering with axle removal.
10. Remove the 3/4-10 x 5-1/2" Grade 8 hex-head
capscrews (11), 3/4-10 hex-lock elastic nuts (13),
and 3/4" hardened flat washers (12) securing the
front and rear axle supports (rotating trunnions) to
the vehicle frame.
11. Four bushings (item 16, Fig. 5–2) help locate the axle
supports to the vehicle frame; tap the front and rear
supports with a hammer as required to separate the
supports from the bushings. Adjust the jack, hoist or
overhead crane and sling supporting the axle as
required to free the axle from the frame and bushings.
12. Remove the axle from the vehicle using the jack,
hoist or overhead crane and sling supporting the
axle. DO NOT raise or otherwise disturb the vehicle
while removing the axle. Balance the axle and
prevent it from tipping, turning or falling while
removing it from beneath the vehicle. Place the axle
on a suitable support or holding stand.
B. Axle Inspection, Internal Service and Repair
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 (front axle with
park brake) and CA355028 (rear axle without park brake).
The axle should be checked, serviced and repaired only
by experienced service technicians who are aware of all
safety instructions and particular component features.
C. Installation
The front and rear axle assemblies differ in that the front
axle assembly is equipped with a park-brake mechanism
and limited-slip feature; the rear axle has neither. The
steps below outline a typical axle installation procedure,
suitable for either the front or the rear axle assembly.
1. Before proceeding, ensure that the vehicle will
remain in place during axle installation. Block the
front and rear of both tires on the axle that is already
installed on the vehicle.
2. If applicable, raise the vehicle using a suitable jack or
hoist. Place suitable supports beneath the frame and
lower the vehicle onto the supports, allowing enough
room for axle installation. Ensure that the vehicle will
remain in place during axle installation.
3. Using a suitable jack, hoist or overhead crane and
sling, remove the axle from its support or holding
stand. Balance the axle and prevent it from tipping,
turning or falling while positioning it beneath the
vehicle. DO NOT raise or otherwise disturb the
vehicle while installing the axle. Keep the axle
supported and balanced on the jack, hoist or
overhead crane and sling throughout the installation
procedure.
Model 3606 • Origin 10/99