Traction Motor; Speed Switch Assembly Adjustment; External Motor Inspection - Columbia ParCar P4G Service Manual

3. With speed switch lever released, rotate pot switch
(using a straight screwdriver) until correct reading of
0 to 50 ohms is observer.
4. Torque speed switch lever clamp screw and rotate
speed switch lever to full speed position. Check for
4500 to 5500 ohms. Adjust pot switch as required
only if necessary to achieve correct ohm resistance
value.
Caution: If resistance results are inconsistent or
erratic, the pot switch must be replaced.
Installation
1. Set speed switch into place on frame mount, and
install speed switch mount screws. Do not torque
screws at this time.
2. Connect accelerator linkage using clevis pin, washer
and new cotter pin.
Caution: As linkage is connected, check that
accelerator rod moves freely without
interference with frame or other components.
Tension from interference will damage switch
over time and cause pot switch failure.
3. Adjust accelerated switch position (if mount holes
are slotted) and torque mounting screws.
4. Route wires along frame to speed control module.
Connect white lead wire to # 2 tab terminal and black
lead wire to # 3 tab terminal on speed control
module. See Figure 22.
5. Tie speed switch wires along frame with wire ties, to
prevent wires from dragging under vehicle and dam-
aging wires.
6. Connect red and black wires from wire harness to
speed switch assembly micro switch, 1st and 3rd ter-
minals. DO NOT USE CENTER TERMINAL.

Speed Switch Assembly Adjustment

Slowly depress accelerator, and check that:
1. As accelerator is depressed, speed switch lever
does not contact micro switch plate support spacers.
2. As accelerator is released, speed switch lever must
contact micro switch lever shortly before accelerator
pedal reaches stop position. Also, check at speed
switch lever does not contact micro switch support
spacer.
If adjustment is required, remove clevis pin from speed
switch lever and rotate clevis to lengthen or shorten
accelerator rod as required.
Caution: All years and models of vehicles will
not be the same, regarding the clevis pin posi-
tion in speed switch arm. If clevis pin is insert-
ed into incorrect speed switch lever hole, the
following will occur:
* Vehicle will not operate at full speed or poor hill
climbing performance will be observed. Move
clevis pin down one hole on speed switch lever.
* Speed switch lever will contact micro switch plate
support spacers, and rod adjustment will not cor -
rect the problem. Move clevis pin up one hole on
speed switch lever.
Always, use new cotter pin when reassembling.

Traction Motor

Maintenance
A good planned maintenance program will save many
hours of future "down time" and prevent catastrophic fail-
ure of major motor components. Maintenance schedules
consist of periodic routine inspections of motors, battery
and wiring circuitry.
Since the operating environment: of Golf or
Industrial/Commercial equipment varies widely, the fol-
lowing recommendations are suggested for periodic
maintenance inspection.
Table 10 - Periodic Maintenance
Usage
Normal service - 8
hours per day operation
Severe service* - 24
hours of daily operation
Severe Service would include:
1. Dusty or sandy locations such as cement plant,
lumber or flour mills, coal dust or stone-crushing
areas.
2. High Temperature Areas such as steel mills,
foundries, etc.
3. Sudden Temperature changes such as continuous
in-door-outdoor movement, as in refrigeration plants,
etc.

External Motor Inspection

Routine motor inspection should include the following:
1. Check for clean, tight: terminal studs and mounting
bolts.
8-24
Inspection Interval
Routine inspection every
1,000 hours.
Routine inspection every
500 hours.