Dry Parts After Cleaning; Prevent Corrosion On Cleaned Parts; Inspection - Meritor RS-220 Maintenance Manual

Dry Parts After Cleaning

1. Parts must be dried immediately after cleaning
and washing.
2. Dry the parts using soft, clean paper or cloth
rags.
CAUTION
Damage to bearings can result when they are
rotated and dried with compressed air.
3. Except for bearings, parts can be dried with
compressed air.

Prevent Corrosion 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 to all surfaces. Wrap
cleaned parts in a special paper that will
protect the parts from moisture and prevent
corrosion.

Inspection

Wheel Bearings
Inspect the wheel bearings when the hub is
removed from the knuckle spindle.
Remove all lubricant from the bearings, knuckle,
hub and hubcap.
Inspect the cup, the cone and the rollers and cage
of all bearings. If any of the following conditions
exist, you must replace the bearing.
1. The center of the large diameter end of the
rollers is worn level or below the outer
surface. Figure 3.1.
Prepare Parts for Assembly
2. The radius at the large diameter end of the
rollers is worn to a sharp edge. Figure 3.1.
A visible roller groove in the cup or the cone
inner race surfaces. The groove can be seen
at the small or large diameter end of both
parts. Figure 3.2.
Deep cracks or breaks in the cup, the cone
inner race or the roller surfaces. Figure 3.2.
Bright wear marks on the outer surface of
the roller cage. Figure 3.3.
Damage on the rollers and on the surfaces
of the cup and the cone inner race that
touch the rollers. Figure 3.4.
Damage on the cup and the cone inner
surfaces that touch the rollers. Figure 3.5.
Figure 3.1
WORN RADIUS
SURFACE
Figure 3.2
CRACK
Section 3
WORN
WEAR GROOVE
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