5.
Inspect for cracked, worn, or oil-contaminated
brake linings and brake drums (or rotors).
6.
Check the thickness of the brake linings. Re-
place brake linings on all brake assemblies on
the axle if any brake linings are worn to less than
approximately 1/4 inch (6.4 mm) at the thinnest
point.
Saddle Tank Areas Inspection
WARNING
When draining the air reservoir, do not look into
the air jets or direct them toward anyone. Dirt or
sludge particles may be in the airstream and
could cause injury.
NOTICE
If the water drained from the air reservoirs is
cloudy or oily, it may indicate a problem with the
compressor. If oil is allowed to contaminate the
air dryer, it will not remove the water from the air
brake system, which could adversely affect brak-
ing.
1.
Drain the brake system air reservoirs (reservoirs
with automatic drain valves only).
NOTE: Battery locations vary between vehicles.
2.
Inspect the batteries.
WARNING
Battery posts, terminals, and related accessories
contain lead and lead compounds, chemicals
known to the State of California to cause cancer
and reproductive harm. To prevent possible per-
sonal injury, always wash your hands after han-
dling battery parts and related accessories.
2.1
Remove the battery box cover and inspect
all visible battery cables for loose wiring or
damage.
2.2
Check that the battery hold-down is se-
cure.
IMPORTANT: Aerodynamic components de-
crease drag force as a vehicle moves, thereby
improving fuel efficiency. If replacement of an
05/05/2009 f470530
1
2
3
4
5
6
7
8
9
10
11
12
13
1. Inlet Port/Check Valve
2. Lower Housing
3. Bypass Valve
4. Filter Element
5. Spring
6. Cover O-Ring
7. Clear Cover
8. Vent Cap O-Ring
9. Vent Cap
10. Collar
11. 120VAC Pre-Heater
12. 12VDC Pre-Heater
13. Drain Valve
Fig. 21.16, DAVCO Fuel/Water Separator (Fuel Pro 482
shown)
Pre- and Post-Trip Inspections and Maintenance
21.14
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