Columbia ParCar Expediter EX21-24A, Service Manual

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Section 6 – Front wheels, Fork & Steering
GENERAL
Three wheel models utilize a suspension mount front fork or a
non-suspension front fork. Both can be coupled with either a
loop tiller control bar, a handle control bar or steering wheel with
a rack and pinion steering assembly.
Four wheel models are operated by a loop tiller control bar, a
handle control bar or steering wheel, connected to the rack and
pinion steering assembly.
The rack and pinion assembly pushes and pulls on tie rod ends
to control front wheel steering.
FRONT WHEELS AND HUBS
Removing Front Wheels and Hubs
1. Before raising vehicle, with wheels on the ground, break
loose the lug nuts.
2. 3-Wheel Model with suspension fork. See Figure 6-1.
Remove lug nuts and wheel assembly from the hub.
Remove the hub components shown in Figure 6-1.
3-Wheel Model with non-suspension fork. See Figure 6-
2. Remove the screw, washer and jam nut. Remove lug
nuts and wheel assembly from the hub. Remove the hub
components shown in Figure 6-2.
3. 4-Wheel Models: See Figure 6-3. Remove lug nuts and
wheel assembly from the hub. Remove the spacer and hub
components shown in Figure 6-3. Repeat for the other
front wheel.
NOTICE: Always inspect the condition of vehicle
steering components before making adjustments.
Worn, broken or damaged parts must be replaced
before proper adjustment can be performed.
To perform this service, raise vehicle using floor jack
and safely support it with jack stands positioned under
main frame tubes. See Section 3 Maintenance - Lifting
Instructions.
Figure 6 - 1
Figure 6 - 2