Model 8210/8250 Maintenance Manual Section 7. Component Procedures
Drive and Brake Drive Wheel
Publication: 1146945/001, Revised: 25 Sep 2018 7-35
placed in the same position the old tire
was installed on the hub. You can use a
spacer (slightly smaller in diameter that
the inside diameter of the tire insert and
the same thickness as the depth of the
recess) to obtain the correct amount of
recession.
4. Position the hub assembly with the old tire
on top of the circular ram so the outside of
the wheel is positioned upward. The
outside edge of the hub has a chamfer to
help guide the new tire on the wheel. The
chamfered edge must always be the
leading edge when a tire is pressed on the
hub.
5. Center the hub assembly on top of the ram
and make sure they mate squarely.
6. Position the new tire with its chamfered
insert facing the hub. Align the new tire
and the hub so they are concentric.
7. Begin pressing the new tire on the hub
and the old tire off the wheel. Run the
press slowly for the first few inches of
travel because this is the critical step of
the operation. If the tire starts to cock,
stop the press immediately and realign the
tire. Use a soft-headed mallet to realign
the tire on the hub.
N
OTE: If the new tire does not press on with a
minimum pressure of 5 tons
(68,947 kPa), replace the hub.
8. Release the press. Remove the wheel, tire
assembly, and the old tire from the press
table. Inspect the wheel and tire assembly.
Drive Wheel Installation
1. Inspect the drive wheel studs for damage
or looseness. Replace any damaged studs.
Use the following procedure to tighten
loose studs.
a. Remove and clean the studs.
b. Install two lug nuts, jammed together,
to the end of the stud. This allows
tightening of the studs using a torque
wrench.
c. Apply thread-locking primer
(P/N 990-666) to the studs.
d. Apply thread-locking compound
(P/N 990-571) to the studs.
e. Install the studs and torque to 23 to
28 ft. lbs. (32 to 38 Nm).
N
OTE: Do not over-tighten the studs. If
tightened to more than 30 ft. lbs.
(41 Nm), the studs start to cut new
threads and go in too far, hitting the lip
seal. If the lip seal is damaged due to
studs being installed too far, the axle
must be replaced.
f. Remove the nuts on the studs. Make
sure the studs do not rotate.
2. Install the wheel and tire assembly on the
drive axle of the truck.
3. Install the five drive wheel mounting nuts.
Torque the nuts in at least three steps,
starting with a low torque [5 ft. lbs.
(7 Nm)]. Torque nuts in a star pattern to
make sure that the lugs are centered in
the mounting holes. Torque to 55 ft. lbs.
(75 Nm) on the final pass.
4. Remove the blocks and lower the lift truck.
5. Install the bumper. See “Bumper
Installation” on page 7-13.
6. Reconnect the battery connector. Place the
Main ON/OFF Switch in the ON position.
If equipped with the optional keypad, enter
your PIN-key code and then press the
green ON ( | ) key.
7. Test the operation of the truck.
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