SkyTrak 3606 Service Manual - Manual (Page 112)

Section 5
5-2
Introduction
Legend
The front (park-brake equipped) and rear (no park
brake) Carraro axles are designed for heavy-duty, off-
road industrial use. Each axle consists of a beam-type
axle case, housing the differential center section,
inboard wet-disc brakes, a pair of trumpet-like shaft
housings, and stub-axle/wheel-hub units at each end.
O-rings and oil seals retain fluid within the axle. The
axles have a semi-floating mounting configuration.
Each axle center is secured to the vehicle frame with
semi-rotating front and rear supports, and at one side
with a cylinder, anchor and plate. The frame tilt
cylinder is mounted on the right side of the front axle
and the stabilizer cylinder is mounted on the left side of
the rear axle. Steer cylinders and swivels are mounted
inboard on each axle. Power to the axles is transmitted
from the engine flywheel, connected to the transmission
drive plate and torque converter, out through a
driveshaft connected to the transfer case. The transfer
case distributes power through output drive shafts to
the front and rear axle differentials, which work
through gearing to turn the wheel and tire assemblies
and to ultimately cause the vehicle to move.
The front differential is equipped with limited-slip, self-
locking gears, supported by two bearings. The design
of the differential permits adjustment to the bevel gear
set. Internal axle service and adjustment procedures
are not the scope of this publication and are thoroughly
covered in the appropriate Carraro axle manual. The
beveled ring gear is adjusted by means of ring nuts
located opposite each other. The position of the pinion,
supported by two bearings, is adjusted through the
addition or subtraction of adjusting shims.
The wheel hubs containing the epicyclic reduction
gears are supported by two tapered roller bearings.
The brakes are oil-bath (wet) disc type, operated by an
annular piston and equipped with an automatic wear
compensation device. The double-rod hydraulic steer-
ing cylinder is mounted on the differential support.
Directional steering input is transmitted to the axles by
means of articulated track rods that allow toe-in adjust-
ments. Two specially designed support trunions (one
front, one rear) attach the axle center to the chassis
and allow the axle to pivot freely, limited by the cylinder
attached to one side.
NOTE: Detailed axle service instructions (covering
axle, brakes and wheel-end safety, repair, disassembly,
reassembly, adjustment and troubleshooting informa-
tion) are provided in the Carraro Model 26.25M Mainte-
nance and Repair Manual, part number CA355027
(front axle with park brake) and CA355028 (rear axle).
One wheel type with nominal dimensions of 9" x 24" is
used on the vehicle. The wheel is a welded two-piece
design with ten one-inch diameter holes equally spaced
on a 13.188" diameter bolt circle. A 12-ply, or better,
directional-tread tire, 13.00 x 24 in size, can be used on
this vehicle. Tires are filled only with air when the vehi-
cle is shipped from the factory.
1. Left Beam Trumpet
2. O-ring
3. Left Brake Flange
4. O-ring
5. Bushing
6. Bushing
7. Rear Support
8. Bolt
9. Grease Nipple, M8-1
10. Thrust Washer
11. Bushing
12. Bushing
13. O-ring
14. Bushing
15. Thrust Washer
16. Right Brake Flange
17. Right Beam Trumpet
18. Breather, M10-1
19. Bolt
20. Belleville Washer
21. Shim
22. Bushing
23. Bushing
24. Oil Seal
25. Spherical Bearing
26. Belleville Washer
27. Oil Plug, M30-2
28. Breather, M10-1
29. Bolt, M12 X 110 Mm
30. Central Body
31. Front Support
32. Bolt
33. Washer
34. Internal Snap Ring
35. Bolt, M16-1,5
36. O-ring
37. Pin
Model 3606 • Origin 10/99