Assemble - Taylor-Dunn E-451 Service And Parts Manual

E-451 & E-457

Assemble

Note: Thoroughly clean and inspect all parts
before reassembly. Apply a small amount
of differential oil to all gears and bearings
before reassembly.
Note: Depending on your vehicle configuration,
the rear pinion pilot bearing is not required
and may not be installed.
Note: If the ring and pinion gear set is to be
replaced then the shims for the pinion
housing may have to be adjusted. Refer to
section Selecting the Pinion Housing Shim
for information on adjusting the shim.
Note: Most of our gear sets are non-hunting or
semi-hunting gears. With this type of gear
the pinion and ring gears must be aligned
correctly. There will be two teeth marked on
the ring gear and one tooth marked on the
pinion gear. The one tooth on the pinion gear
must be installed so that it is between the
two teeth on the ring gear. The gear ratios
are; 2.50, 2.70, 2.75, 3.25 and 3.00.
Pinion housing
1: If the rear pinion bearing was removed, install a
new bearing.
2: Install the bearing races into the pinion housing.
3: Place the pinion gear into the 3rd member.
4: Install the pinion housing onto the 3rd member.
5: Install the pinion bearing spacers, shims and front
bearing.
6: Install a spacer on the pinion shaft so that the
pinion nut can be installed and tightened.
ME-45X-01
7: While rotating the pinion shaft, tighten the pinion
nut to 100 foot pounds (140 Nm).
8: Check the torque required to rotate the shaft. If
the torque is not between 6 -10 inch pounds (0.7-
1.17 Nm). then the bearings must be re-shimmed.
Add or subtract shims as required until the torque
is within specification.
Differential Assembly
1: Reassemble the differential housing in reverse
order of disassembly.
2: Place the ring gear onto the differential housing
matching the mark made during disassembly.
3: Install two of the ring gear bolts finger tight to
align the gear.
4: Press the ring gear onto the differential housing.
5: Install the ring gear bolts. Cross tighten to torque
specified in the Hardware Torque table at the end
of this section.
6: If the differential bearings were removed, install
new bearings.
7: Place races onto the differential bearings and
place the differential assembly onto the 3rd
member. Position the assembly so that it is just
touching the pinion gear.
8: Install the bearing adjusting nuts making sure that
the nuts are not cross threaded. Position the nuts
so they are in contact with the bearing races.
9: Install the bearing caps in their original locations
and torque the bolts to 12-15 foot pounds (17-21
Nm) making sure that the adjusting nuts still turn
freely.
Note: In the following text,
"Left adjusting nut"
refers to the nut on the
ring gear side of the
differential assembly.
"Right adjusting nut"
refers to the nut on the
pinion gear side of the
differential assembly.
The differential bearing preload is set by measuring the
case spread of the 3rd member housing. As the bearing
adjusting nuts are tightened, the two differential bearing
caps will be pushed (spread) away from each other. A
dial indicator must be used to measure the case spread
as the nuts are tightened. Mount the dial indicator so
that it is 4 inches above the top of the bearing caps and
parallel to the center line of the carrier bearings.
Note: Be sure to continually rotate the ring gear
while adjusting the bearings. This makes
sure that the bearings and races remain
seated correctly.
Drive Axle
Page 41