78
i CAUTION
INSUFFICIENT WHEEL NUT (RIM NUT)
TORQUE CAN CAUSE WHEEL SHIMMY,
RESULTING IN WHEEL DAMAGE, STUD
BREAKAGE, AND EXTREME TIRE
TREAD WEAR. EXCESSIVE WHEEL
NUT TORQUE CAN BREAK STUDS,
DAMAGE THREADS AND CRACK DISCS
IN THE STUD HOLE AREA. USE THE
RECOMMENDED TORQUE VALUES AND
FOLLOW THE PROPER TIGHTENING
SEQUENCE.
On each wheel stud, the end that faces away
from the vehicle may be stamped with an “L” or
“R” depending on which side of the vehicle the
stud is installed. Studs stamped with a “L” are
left-handed threaded and are installed on the
“Roadside” of the vehicle. Studs stamped with an
“R” are right-hand threads and are installed on
the “Curbside” of the vehicle.
24. TEST THE SERVICE BRAKES.
Test the service brakes before leaving
the lot. Depress the brake pedal,
release the parking brake, and check
that the brake system warning light
goes “OUT”. If the warning light
remains “ON” after releasing the
parking brake, correct the problem
before driving off. When safe to do so,
drive the vehicle a short distance and
make a firm application of the service
brake pedal. If there is any pulling
to one side or the other, correct the
problem before continuing.
25. TEST THE PARKING BRAKE.
Test the parking brake on a 20% grade.
Apply the parking brake with the
vehicle on a 20% grade (or as steep of
a grade that the vehicle may normally
be parked on). The ramp surface
should be made of Portland cement or
equivalent. If the parking brake does
not hold the vehicle, repair the parking
brake system.
26. CYCLE THE MOBILITY LIFT.
Open and inspect paratransit door.
Ensure there is enough clearance to
deploy the wheelchair lift. Cycle the
lift, fully deploying and stowing it
each time to its full-stop positions. If
the lift doesn’t reach full-stop it can
slack in-between cycles and not be
in the locked position, causing rattle
and premature wear on lift parts. Run
through full lift function daily from
each of the control locations.
27. INSPECT CONDITION OF
FLOORING, INCLUDING HEATER
HOSE COVERS OR FLOOR
HEATERS.
Inspect the condition of all floor
rubber, looking for seams that are
pulling up, trim that is detached, or
any other trip hazard. Correct as
necessary. Also inspect the floor
mounted heaters. Ensure that their
casings are not damaged and ensure
all heater hose covers are in place.
28. INSPECT A/C HOSES AND
CLAMPS FOR TIGHTNESS.
Inspect the AC hoses, ensuring they
are not cracked, leaking, worn, or
against a sharp edge. Inspect the
clamps for security. AC connections
using a clamp will be located under the
hood, under the floor behind the driver
side door, at the condensers, and at
the evaporators.
29. CHECK THE REAR DOOR,
ENTRY DOOR, AND ALL
EMERGENCY EXITS FOR PROPER
INSTALLATION.
Inspect the rear door, checking that
it travels unimpeded through its full
range of motion. Check it from both
the interior and exterior to assess the
condition of each latch. Ensure that
it is unlocked before operating the
13 MAINTENANCE CHECKLISTS
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