freightliner WALK-IN VAN CHASSIS Operator's Manual page 82

Pre- and Post-Trip Inspections and Maintenance
not intended to be serviced. Serious injury or
death may result from sudden release of the
power spring.
Before doing any repairs or adjustments on a
service/parking brake chamber, read the appli-
cable warnings and instructions in Group 42 of
the Walk-In Van Chassis Workshop Manual.
15. Inspect the air brake chamber and the air brake
chamber pushrods. See
1
02/22/2000
A. Do not remove this clamp ring.
1. MGM TR-T (TR Series) Brake Chamber shown
Fig. 11.7, Parking Brake Chamber Clamp
16. Inspect the slack adjusters.
16.1 Meritor Slack Adjusters: Check the boot
for cuts, tears, or other damage. Have it
replaced if necessary.
16.2 Inspect the slack adjuster boot for cuts or
tears. If the boot is damaged, have it re-
placed. See
17. Check tire inflation pressures using an accurate
tire pressure gauge.
Tires should be checked when cool. For inflation
pressures and maximum loads (per tire) see the
tire manufacturer's guidelines.
17.1 Be sure valve stem caps are on every tire
and that they are screwed on finger-tight.
Fig. 11.7.
A
Fig. 11.8.
06/17/2003
1. 7/16-inch Adjusting
Nut
2. Grease Fitting
3. Boot
4. Link
5. Brake Chamber Piston
Rod
Fig. 11.8, Automatic Slack Adjuster (typical)
17.2 Inflate the tires to the applicable pressures
if needed.
17.3 If a tire has been run flat or underinflated,
f421352
check for possible wheel or tire damage
before adding air.
Moisture inside a tire can result in body
ply separation or a sidewall rupture. Dur-
ing tire inflation, compressed air reservoirs
and lines must be kept dry. Use well main-
tained inline moisture traps and service
them regularly.
Do not operate the vehicle with underinflated or
overinflated tires. Incorrect inflation can stress
the tires and make the tires and wheels suscep-
tible to damage, possibly leading to wheel or tire
failure and loss of vehicle control, resulting in
serious personal injury or death.
IMPORTANT: The load and cold inflation
pressure must not exceed the wheel manu-
facturer's recommendations, even though
the tire may be approved for a higher load
4
6
7
3
8
2
1
10
6. Clevis
7. ½-inch Clevis Pin
8. 1/4-inch Clevis Pin
9. Grease Relief
Opening
10. Slack Adjuster Spline
WARNING
5
9
f421398
11.6