freightliner Cargo Manual page 95

Pretrip Inspection and Daily Maintenance
35.6 Observe the hose cover condition, especially
hoses exposed to water splash and ice. If
any hose is dried out or ragged (the wire or
liner is showing through the cover), replace
the hose.
35.7 Inspect the front air brake lines for leaks at
the fitting where they enter the air chamber.
With an assistant at the front wheels to in-
spect the brake lines, turn the wheels to full
lock in one direction and hold the service
brake pedal down. Inspect the front brake air
lines closely near where they enter the air
chambers.
Turn the wheels to full lock in the other di-
rection, hold the service brake pedal down,
and repeat the inspection.
If there is a leak, the hose should be re-
placed. See Group 42 of the Cargo Work-
shop Manual for the hose replacement pro-
cedure.
35.8 Inspect air tubing, especially tubing made of
nylon. In cold weather, nylon tubing is sensi-
tive to damage, such as nicks or cuts. Re-
place nicked or cut tubing, even if it is not
leaking.
9.17
35.9 Check the bend radii of all hoses. See
Fig. 9.4. The minimum bend radius of a
hose is that bend which the hose will with-
stand without experiencing damaging
stresses or kinking. For minimum bend ra-
dius values, see Group 42 of the Cargo
Workshop Manual .
When a rubber hose does not meet mini-
mum bend radius requirements, the outside
may appear smooth even if the inner tube is
kinked. Reroute the hose or replace it with
one of adequate length if the bend radius is
not within minimum specifications.
11/03/94
NOTE: Center of the hose bend radius should be well
away from the fitting.
A. Bend Radius
Fig. 9.4, Bend Radius
A
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