Columbia ParCar Expediter EX21-24A, Service Manual

Page: 41 / 94

Section 6 – Front wheels, Fork & Steering
Figure 6-3
6-1
INSPECTING/REPLACING WHEEL HUB BEARINGS
ROLLER BEARINGS
Roller bearings should be replaced whenever wheel hub is
removed.
Pack bearings with wheel bearing grease before installing.
INSTALLING FRONT WHEEL HUBS AND WHEELS
1. 3-Wheel Model with suspension fork. See Figure 6-1.
Clean spindle. Apply a thin coating of grease and install
hub onto the spindle. Install inner bearing seal and
bearing, hub, bearing, bearing seal and adjusting nut.
Tighten adjusting nut until resistance is felt when turning
the wheel hub, then back off slightly. While holding
adjusting nut, install and tighten jamnut. Place wheel
assembly on the hub studs. Tighten four lug nuts by hand
and wrench until snug using a criss-cross pattern.
2. 3-Wheel Model with non-suspension fork. See Figure 62.
In the hub install the bearing cups, roller bearing with
seals and the spacers. The smaller spacer is to the left
side. Tighten four lug nuts by hand and wrench until snug
using a criss-cross pattern. Install hub assembly in wheel
and place in fork. Attach with screw, washer and jam nut.
Tighten until resistance is felt.
3. 4-Wheel Models. See Figure 6-3. Install bearing seal and
inner bearing, hub, bearing, washer and axle nut. Tighten
axle nut until resistance is felt when turning the wheel hub,
then back off until cotter pin can be inserted, then install
new cotter pin. Install spacer and grease cap. Repeat for
other wheel. Place wheel assembly on the hub studs.
Tighten four lug nuts by hand and wrench until snug using
a criss-cross pattern.
4. Lower the vehicle to the ground and torque the lug nuts to
65 ft. lbs. (23 Nm) using the same criss-crossing pattern.
TIRES
In the event of a flat tire, remove wheel assembly from vehicle
and follow standard tire repair procedures.
TILLER EQUIPPED MODEL
REMOVING TILLER
1. Remove steering wheel lock nut and washer from center
of the tiller.
2. Pull tiller from keyed shaft.
NOTICE: If bearing appears worn, or steering is not
smooth, continue with steps 3 - 5 and replace the
bushing and bearings (Figure 6-4).
REPLACING STEERING SHAFT BEARINGS
3. On 4-wheel models, remove lock nut securing steering
shaft to tie rod end. Tie rod is left-hand thread. Using a
soft mallet, tap the steering shaft free of the steering
column.
Figure 6 - 4