Specifications
29
Prepare Parts for Reassembly
MAINTENANCE MANUAL
Clean Ground and Polished Parts
1. Use a cleaning solvent, kerosene or diesel
fuel to clean ground or polished parts or sur-
faces. Do not use gasoline.
2.Useatoolwithaatbladeifrequired,tore-
move sealant material from parts. Be careful
not to damage the polished or smooth sur-
faces.
CAUTION
DO NOT USE HOT SOLUTION TANKS OR
WATER AND ALKALINE SOLUTIONS TO
CLEAN GROUND OR POLISHED PARTS.
DAMAGE TO PARTS CAN RESULT.
3. Do not clean ground or polished parts with
water or steam.Do not immerse ground or
polished parts in a hot solution tank or use
strong alkaline solutions for cleaning, or the
smooth sealing surface may be damaged.
Clean Rough Parts
1. Clean rough parts with the same method as
cleaning ground and polished parts.
2. Rough parts can be cleaned in hot solution
tanks with a weak or diluted alkaline solution.
3. Parts must remain in hot solution tanks until
heated and completely cleaned
4. Parts must be washed with water until all
traces of the alkaline solution are removed.
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
place a cover over all openings in the axle
assembly. Examples of openings are breath-
ers or vents in air chambers.
Drying Parts After Cleaning
1. Parts must be dried immediately after clean-
ing 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 pro-
tect the parts from moisture and prevent cor-
rosion.
Inspect Parts
It is very important to inspect all parts carefully and
completely before the axle or differential is assem-
bled. Check all parts for wear and replace dam-
aged parts.
1. Inspect the cup, cone, rollers and cage of all
tapered roller bearings in the assembly. If
any of the following conditions exist, replace
the bearing.
• Thecenter ofthelarge-diameter endofthe
rollers is worn level with or below the outer
surface. Figure 4.2
• Theradiusatthe large-diameter end of the
rollers is worn to a sharp edge. Figure 4.2.
• Thereisavisiblerollergrooveinthecupor
cone inner race surfaces. The groove can be
seen at the small- or large-diameter end of
both parts. Figure 4.3.
• Therearedeepcracksorbreaksinthecup,
cone inner race or roller surfaces. Figure 4.3.
•
There are bright wear marks on the outer sur-
face of the roller cage. Figure 4.4.
• There is damage on the rollers and on the
surfaces of the cup and cone inner race that
touch the rollers. Figure 4.5.
• There is damage on the cup and cone inner
race surfaces that touch the rollers. Figure 4.6.