BENDIX Trailer System-Guard Manual
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®
Bendix
Trailer System-Guard
21
CONTROL OUTLET
22
SUPPLY OUTLET
FIGURE 1 - TRAILER SYSTEM-GUARD
DESCRIPTION
®
The Bendix
Trailer System-Guard
moisture and contaminates from the trailer air system. It is
not intended to take the place of a dryer normally located
on the power unit. It acts as a buffer to remove moisture
during wet times and gives up water vapor during dry times.
It protects the trailer air brake system when, for short periods
of time, the trailer is pulled by vehicles without an air dryer
or during times when the trailer is disconnected from the
tractor.
The Trailer System-Guard
desiccant air dryers mounted in a single housing, one to
protect the trailer service system and the other to protect
the trailer supply system.
PREVENTIVE MAINTENANCE
Every 300 operating hours, 8,000 miles, or one (1)
month:
1. Visually inspect for physical damage or wear to the Trailer
™
System-Guard
air dryer. This can include, but is not
limited to, chaffed or broken air hoses and or broken or
missing parts.
™
Air Dryer
ALL SUPPLY & CONTROL PORTS 1/4" NPT
™
AIR DRYER
™
air dryer removes
™
air dryer consists of two
2. Check mounting bolts for tightness. If loose re-torque
per "Mounting the Trailer System-Guard
Every 900 operating hours or 25,000 miles or every
three (3) months:
Check for moisture in the air brake system by opening
reservoirs, drain cocks, or valves and checking for the
presence of water. If moisture is present the tractor and
trailer should be checked for leaks. If leakage is not
excessive check the tractor air dryer for proper operation.
If defective, the tractor dryer should be repaired, rechecking
trailer reservoirs again after 3 months. If the tractor dryer
operates satisfactorily and the trailer has not been
connected to a tractor without an air dryer and the trailer
glad hands were not open to the atmosphere for some
extended period of time, the trailer dryer should be replaced.
If the trailer has been connected to a tractor without an air
dryer or the trailer has been parked for an extended period
of time, the trailer should be coupled to a tractor with an air
dryer. This will help the trailer air dryer remove moisture
from the trailer. Place the unit back in service and recheck
for moisture after 3 months.
3/8 - 16 UNC x .50 Deep
Mounting Holes (4)
11
CONTROL INLET
12
SUPPLY INLET
™
Air Dryer".
1