Maintenance Manual

8. Install the reservoir on the cover and tighten the
capscrews.
9. Fill the reservoir with 40 ounces (1183 mL) of
methyl alcohol, then install the filler cap.
42–05 Brake Inspection
Parking Brake Operational Check
IMPORTANT: This procedure should be per-
formed prior to lubrication of the brake compo-
nents.
CAUTION
Perform the following check in a clear safe area. If
the parking brakes fail to hold the vehicle, per-
sonal injury or property damage may result.
1. With the engine running, and air pressure at cut-
out pressure, set the parking brake.
2. Put the vehicle in the lowest gear and gently at-
tempt to move it forward. The vehicle should not
move. If the vehicle moves, the parking brakes
are not operating correctly and must be repaired
before the vehicle is returned to service. See
Group 42 of the New Cascadia Workshop
Manual.
Brake Component Inspection
Air Disc Brakes
IMPORTANT: The following step to inspect the
caliper mounting bolts should only be performed
at the initial maintenance (IM) interval.
Vehicles may have both axial and radial
mounted calipers. Follow the instructions based
on the type of calipers installed on the vehicle.
Axial Mounted Brakes
IMPORTANT: The following information applies
to all types of axial mounted brake applications.
1. Park the vehicle on a level surface, shut down
the engine, and set the parking brake. Chock the
tires.
2. Raise the vehicle and support it on jack stands.
3. Remove all of the wheel assemblies. For instruc-
tions, see Group 40 of the New Cascadia Work-
shop Manual.
NOTE: In all steps that require a torque wrench,
use a Snap On torque wrench ATECH4RS600,
or an equivalent, with a center to handle length
of 47 inches (119 cm).
4. Set a torque wrench to 350 lbf·ft (475 N·m) and
tighten the caliper mounting bolts following the
tightening pattern shown in
Fig. 5. If they do not
turn, no further work is needed. If they turn, take
the vehicle to an authorized Freightliner dealer to
have all of the caliper bolts on that wheel end
replaced. Due to limited caliper bolt access, it
may be necessary to use tool DDC DSN-
CHA018005 referenced in tool letter 18TL18. If
the tool is needed, use tool DDC DSN-
CHA018005 only and no other tools. See
Fig. 6.
If the tool is needed, see Table 1 for torque
specifications for a 47 in (119 cm) long wrench.
f42266503/26/2020
12 4 5
3 6
Fig. 5, Axial Bolt Tightening Pattern
f58051809/28/2018
Fig. 6, DDC DSNCHA018005 30mm Air Disc Brake
Caliper Brake Bolt Torque Adaptor
Brakes42
New Cascadia Maintenance Manual, January 202042/6