freightliner Custom Classic MT45 2022, Maintenance Manual

Page: 94 / 138

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 Walk-In Van Chassis
Workshop 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. 4 . 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.
See
Fig. 5 . If the tool is needed, see Table 1 for
torque specifications for a 47 in (119 cm) long
wrench.
f422665 03/26/2020
1 2 4 5
3 6
Fig. 4, Axial Bolt Tightening Pattern
f580518 09/28/2018
Fig. 5, DDC DSNCHA018005 30mm Air Disc Brake
Caliper Brake Bolt Torque Adaptor
Brakes
42
Walk-In Van Chassis Maintenance Manual, October 2019
42/4