Wear Ring With Double-Lip Teflon Seal (Automatic Transmission) - Mack E7 Service Manual

5-101.bk Page 32 Friday, March 17, 2006 11:05 AM
1. Position wear ring in the spring clips of the
wear ring installer J 38880 with the arrow
pointing away from the installer tool.
Do not heat the wear ring with a torch. This type
of heat source will not heat the ring evenly.
2. Heat the wear ring and wear ring installer
together in a temperature-controlled oven or
on a hotplate, with the wear ring on the
bottom and installed in the spring clips of the
installer. Work as close as possible to the
engine to avoid heat loss after heating ring.
Heat to 400°F (205°C). Do not install the
driver handle at this time. This allows the
wear ring to maintain sufficient heat until it is
fully installed on the crankshaft flange.
3. Thoroughly clean and dry the crankshaft oil
seal mounting flange.
4. After the wear ring is sufficiently heated, use
heat-resistant gloves to install the universal
driver handle J 8092 into the threaded hole
in the center of the installation tool.
5. Remove the wear ring and installation tool
from the oven or hot plate and immediately
position the wear ring and installation tool
over the crankshaft flange until the
installation tool is fully seated against the
end of the flange. As the wear ring cools, it
will shrink fit onto the crankshaft flange.
Refer to Figure 6-35.
6. Allow the wear ring to cool completely. Then
remove the installation tool.
Figure 6-35 — Crankshaft Wear Ring Installation
Page 6-32
200 ENGINE ASSEMBLY
Wear Ring with Double-Lip Teflon
Seal (Automatic Transmission)
The oversize inside diameter lip seal and wear
ring are shipped as an assembly, with the seal
installed on the wear ring. Do not remove the seal
from the wear ring prior to installation. The wet
clutch wear ring and seal installer J 35529 is
required for installation. This tool presses both
the wear ring and the oil seal onto the crankshaft
flange.
SPECIAL TOOL REQUIRED
INSTALLATION
Refer to Figure 6-36.
1. Remove existing wear ring from crankshaft
2. Thoroughly clean and dry the crankshaft
3. Apply a thin, even layer of Loctite 609 to the
Do not lubricate the lips of a Teflon seal before
installation. Teflon seals function most effectively
when installed dry.
4. The lip of one side of the seal is yellow.
5. Using the three guide pins, attach the oil
6. Install the press cup over the guide pins,
Wear Ring and Seal Installer J 35529
before installing new wear ring.
flange.
circumference of the crankshaft flange.
Install the oil seal with the yellow lip toward
the transmission. Position the oil seal and
wear ring assembly onto the recessed side
of the installation tool adapter plate with the
yellow lip facing away from the direction of
installation (toward the transmission).
seal installation tool adapter plate to the
crankshaft flange.
then install the press cup driver hex nut.