IC Bus CE Series 2020, Operation And Maintenance Manual

Page: 245 / 287

Maintenance
9. All wheels undergo a process called joint settling when
placed in service after a wheel installation has been
performed. This process results in a reduction in the torque
on the wheel nuts. To correct this condition, operate the
vehicle normally for approximately 50 miles (80 km), then
use a calibrated torque wrench to retorque the wheel nuts
to specification using the appropriate pattern shown in the
wheel nuts torque sequence diagram.
10. As part of a daily pretrip inspection, look for loose or missing
wheel nuts. Also look for rust streaks extending outward
from the wheel nuts; this can be an indicator that one or
more wheel nuts are loose, even if they cannot be turned
by hand. Normal periodic maintenance should also include
checking the wheel nut torque with a torque wrench.
Windshield Wiper
Wiper Blade Assembly Replacement
1. Press the plastic lever at the wiper blade assembly to
the wiper arm hinge.
2. Slide the wiper blade assembly up the wiper arm and
detach it.
3. Snap the new wiper blade assembly on to the arm in the
opposite direction of the removal.
4. Check to see that the rubber wiper blade rests flat
against the windshield.
Wiper Arm Removal / Replacement
1. Driver-side measurement (2.06 in. +12 in. –20 in.)
2. Passenger-side measurement (3.98 in. –12 in. +20 in.)
Turn the windshield wiper switch to the on position. Allow wipers
to complete a full cycle and turn OFF the switch. Wipers should
stop in the parked position.
231