Service Manual User Manual

Axles, Wheels and Tires
5-5
IMPORTANT: When replacing a fastener, replace it with
one of equal or higher grade and quality. Torque fasten-
ers to the specified value for the application.
• Some service operations require the use of tools spe-
cifically designed for the purpose. Use the special tools
when and as recommended.
• DO NOT pound, beat or hammer on end yokes and
flanges to remove or to install them. Damage to axle
components can occur. Remove and install end yokes
and flanges by following the recommended procedures
in the appropriate Carraro axle service manual.
• DO NOT reuse oil or grease seals.
CLEANING: Clean parts with machined or ground sur-
faces (such as gears, bearings, and shafts) with emul-
sion cleaners or petroleum-based cleaners. DO NOT
steam clean internal components and the interior of the
planetary hub and axle housing. Water can cause corro-
sion of critical parts. Rust contamination in the lubricant
can cause gear and bearing failure. Remove old gasket
material from all surfaces.
DRYING: Use clean, lintless towels to dry components
after cleaning. DO NOT dry bearings by spinning them
with compressed air. This can damage mating surfaces
due to lack of lubrication. After drying, lightly coat compo-
nents with oil or a rust-preventive chemical to help pro-
tect them from corrosion. If storing components for a
prolonged period, wrap them in wax paper.
PERIODIC OPERATION REQUIREMENT: Every two
weeks, drive the vehicle far enough to cause the drive-
train components to make several complete revolutions.
This will help assure that internal components receive
lubrication to minimize deterioration caused by environ-
mental factors such as high humidity.
SUBMERSION: If the vehicle has been exposed to water
deep enough to cover the hubs, disassemble the wheel
ends and inspect for water damage and contamination. If
the carrier housing was submerged in water, especially if
the water level was above the vent tube (breather), drain
the axle and inspect internal parts for water damage and
contamination. Before assembling and refilling the unit
with the specified lubricant(s), clean, examine and
replace damaged parts as necessary.
Note: Whenever bearings are removed, regardless of
hours and condition, replace them with new bearings.
Use a suitable puller for bearing removal. Clean, inspect
and lubricate all bearings just prior to reassembly. If
replacement of a damaged bearing cup or cone is neces-
sary, replace the cup and cone as a set.
5.2.1 Axle Replacement
A. Removal
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 removal procedure,
suitable for either the front or the rear axle assembly.
Cleanliness is of extreme importance. Before attempting
to remove the axle, thoroughly clean the vehicle. Avoid
spraying water or cleaning solution on the stabilizer sole-
noids and other electrical components. If using a steam
cleaner, seal all openings before steam cleaning.
CAUTION: The use of replacement parts pro-
vided by other than the original manufacturer is
not recommended, as such use may cause unit
failure and affect vehicle safety. Supply infor-
mation from the axle serial number plate when
communicating about an axle assembly or axle
components.
• Risk of personal injury. Exercise extreme
care when using snap rings or spring-loaded
retention devices.
• It is impossible to know, evaluate and advise
regarding all conceivable ways in which ser-
vice may be performed, or of the possible
hazardous consequences of each method.
Accordingly, whenever a service procedure
or tool is used which is not recommended,
assure that both personal safety and
vehicle safety are maintained by the
selected method.
WARNING: Risk of death or severe personal
injury. Safely raise and adequately support the
vehicle so that it will remain stable and in place
before attempting to remove an axle.
WARNING: Wait for the hydraulic fluid to cool
before servicing any hydraulic component. Hot
hydraulic fluid can cause severe burns.
WARNING: Relieve hydraulic pressure before
servicing any hydraulic component. Escaping
hydraulic fluid under pressure can penetrate
the skin, causing serious injury.
Model 3606 • Origin 10/99