Spicer Tandem Drive Axles Service Manual D__R440, 460, 480, D_R461, 462, 463, 521, 581, 601, 651, 652, 653 - Manual (Page 96)

92
Seals
Seals
Replace Seal
Dana strongly recommends using seal drivers when installing
new seals. Use the proper driver to make sure that the seal is
square and installed to the proper depth.
Oil seals can be easily damaged prior to installation. Use
care when handling the new seal to prevent damage or con-
tamination. Leave the seal in its package until installation.
On new yokes, leave the protector on the yoke until it is in-
stalled on the shaft to prevent damage or contamination.
1. Inspect axle end-play at the yoke (see page 10). Ser-
vice if beyond specified limit.
2. Remove the old yoke using appropriate tool. A yoke
puller tool may be made from the center section of
most gear puller tools, or may be purchased from
your local tool distributor.
3. Remove seal. Use care when removing the old seal to
prevent damage to the housing seal bore.
4. Inspect the seal bore area for any damage (nicks,
gouges, corrosion). Carefully remove any slight dam-
age with a crocus cloth. Clean the bore area to re-
move any loose debris.
Do not use any silicone or permatex-type bore sealant with
this seal.
5. Remove the new seal from its package and install
with the proper driver:
Due to the resiliency of the plastic driver, hammer rebound
may occur when the seal is seated. Keep clear of the ham-
mer rebound path!
6. Handle the seal by its outside diameter avoiding any
contact with the seal lips. During installation, use the
proper driver to make sure that the seal is mounted
properly.
7. Use a rubber mallet to drive the seal tool in until the
flange bottoms on the housing cover bore face. The
flange will locate the seal at the proper depth.
Guidelines for Reusing Yoke
Do not use the yoke if it has any damage on the seal surface
(nicks or scratches).
The surface of the yoke and the lips of the seal form a critical
interface which retains the axle's lubricant while sealing the
axle from outside contaminants. The condition of the yoke
hub's surface is a very important factor in determining seal life.
Carefully inspect the seal surface area of the yoke hub for signs
of wear and damage. Do not reuse the yoke if there is notice-
able wear, such as heavy grooving, beyond normal polishing
from the seal lips.
Note: Do not rework the yoke with abrasives such as emery
paper or crocus cloth. Clean the surface of the yoke as
necessary using chemical cleaners. Remove all trace of
the chemicals from the yoke after cleaning.
Do not use wear sleeves. Wear sleeves increase the yoke
hub surface diameter and cause premature seal wear and
repeat seal failure.
1 - Yoke puller tool
Service kit #217590
D-Input-Use driver #210749 with inert 210750 only
D-Output-Use insert #210751
R-Pinion-Use driver #210749 only
CAUTION
1
CAUTION
WARNING
CAUTION
CAUTION