MCi Crusader II 1989 Maintenance Manual page 40

Date
1-1-89 .
Page
2-12
MC-9 MAINTENANCE MANUAL
To Clean Ground :and Polished Parts:
1. Use a cleaning solvent to clean ground or polished parts
or surfaces. Kerosene or diesel fuel oil can be used for this
purpose. Do not use gasoline. Follow the solvent manufac-
turer's instructior.is for safe use to prevent injury.
2. Use a tool with a flat blade if required to remove gasket
material from parts. Be careful not to damage the ground sur-
faces.
3. Do not clean ground or polished parts in a hot solution
tank, water, stream or alkaline solutions.
To Clean Rough Parts:
1. Clean rough parts the same as cleaning ground and
polished parts.
2.
Rough parts can be cleaned in hot solution tanks with a
weak alkaline solution. ·
3. Parts must remain in hot solution tanks until completely
cleaned and heated. Follow the alkaline product manufactur-
er's instructions for safe use to prevent injury.
4. Parts must be washed with water until the alkaline solu-
tion is removed.
To Clean Axle Assemblies:
1. A complete axle assembly can be steam cleaned on the
outside to remove dirt.
2. Before the axle is steam cleaned, close or put a cover over
all openings in the axle assembly. Examples of openings are
breathers or vents in air chambers.
To Ory Parts That Have Been Cleaned:
1. Parts must be dried immediately after cleaning and wash-
ing.
2. Dry the parts using soft, clean paper or cloth rags.
3. Except for bearings, parts can be dried with compressed
air
CAUTION: Damage to bearings can be
caused if dried by rotating with compressed
air.
To Prevent Corrosion and Rust on Cleaned Parts:
1. Apply axle lubricant to cleaned and dried parts that are
not damaged and are
to
be assembled.
2. To store parts. apply a special material that prevents
corrosion and rust to all surfaces. Wrap them in a special paper
that prevents corrosion and rust
INSPECTING OF PARTS
It is very important to inspect all parts carefully and com-
pletely before the axle or carrier is assembled. Check all parts
for wear and replace damaged parts. Replacement of damaged
or worn parts now will prevent failure of the assembly later.
1. Inspect Tapered Roller Bearings- Inspect the cup, cone,
rol ters and cage of all tapered roller bearings in the assembiy. If
any of the following conditions exist the bearing must be
replaced.
a. The center of large diameter end of rollers worn level
with or below the outer surface.
b. The radius at large diameter end of rollers worn to a
sharp edge.
c. A visible roller groove in the cup or cone inner race
surfaces. The groove can be seen atthe small or large diameter
end or oom parts.
d. Deep cracks or breaks in the cup, cone inner race or
roller surfaces.
e. Bright wear marks ·on the outer surface of the roller
cage.
f. Damage on rollers and on surfaces of the cup and
cone inner race that touch the rollers.
g. Damage on the cup and cone inner race surfaces that
touch the rollers.
2. Inspect Hypoid Drive Pinion and Ring Gear Sets: Inspect
hypoid pinions and gears for wear or damage. Gears that are
worn or damaged must be replaced.
CAUTION: Hypoid drive pinions and ring
gears are machined in matched sets. When
a drive pinion or ring gear of a hypoid set
needs to be replaced, both drive gear and
pinion must be replaced at the same time.
3. lnspectthe Main Differential Assembly: Inspect the follow-
ing parts for wear or stress. Parts that are damaged must be
replaced (Figure 2-33).
DIFFERENTIAL CASE HALVES
-
SPI ROSS)
ii, ,,
INSPECT // I "
DIFFERENTIAL GEAR NEST ASSEMBLY
Figure 2·33. Inspection Points.