Bendix Commercial Vehicle Systems CYCLONE DURADRAIN TRAILER WATER User Manual

Bendix® Cyclone DuraDrain™ Trailer Water Separator

SD-08-2402

DELIVERY PORT

“OUT”

PURGE NUT WITH

DRAIN

FIGURE 1 - CYCLONE DURADRAIN™ TRAILER WA TER SEP ARAT OR

DESCRIPTION

The Cyclone DuraDrain™ trailer water separator can be
installed in the trailer control or in the supply line near the
gladhand. It removes water and contaminants that can
cause brakes to drag and improves the life of the trailer
system components.

.28 DIA.

MOUNTING

HOLES

SCREENS

SUPPLY PORT

“IN”

PURGE NUT WITH

CHECK VALVE

If water from a gladhand enters the supply port and no air
pressure is applied, gravity will allow the water and
contaminants to drain through the purge nut drain port.

GENERAL SAFETY GUIDELINES
WARNING! PLEASE READ AND FOLLOW

THESE INSTRUCTIONS TO AVOID

OPERA TION (See Figure 1)

Compressed air enters the supply port of the Cyclone
DuraDrain™ trailer water separator . The air pressure pushes
down on the check valve contained in the purge nut and
closes the purge nut drain port. When air enters the supply
port of the Cyclone DuraDrain™ trailer water separator a
cyclonic action is created.

PERSONAL INJURY OR DEATH:

When working on or around a vehicle, the following
general precautions should be observed at all times.

1. Park the vehicle on a level surface, apply the

DELIVERY PORT

“OUT”

SUPPLY PORT

“IN”

O-RING

DRAIN

parking brakes, and always block the wheels.
Always wear safety glasses.

The cyclonic motion separates the oil, water and particulates.
The oil, water and particulates gravitate to the bottom of the
Cyclone DuraDrain™ trailer water separator where they
collect. When the air pressure above the purge nut check
valve returns to atmospheric pressure, the check valve moves
up and off its seat. The contaminants then drain through
the purge nut drain port.

2. Stop the engine and remove ignition key when
working under or around the vehicle. When
working in the engine compartment, the engine
should be shut off and the ignition key should be
removed. Where circumstances require that the
engine be in operation, EXTREME CAUTION should
be used to prevent personal injury resulting from
contact with moving, rotating, leaking, heated or
electrically charged components.

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3. Do not attempt to install, remove, disassemble or
assemble a component until you have read and
thoroughly understand the recommended
procedures. Use only the proper tools and observe
all precautions pertaining to use of those tools.

4. If the work is being performed on the vehicle’s air
brake system, or any auxiliary pressurized air
systems, make certain to drain the air pressure
from all reservoirs before beginning

ANY work on
the vehicle. If the vehicle is equipped with an
AD-IS® air dryer system or a dryer reservoir
module, be sure to drain the purge reservoir.

5. Following the vehicle manufacturer’s
recommended procedures, deactivate the
electrical system in a manner that safely removes
all electrical power from the vehicle.

NUT

MOUNTING SPACER

FIGURE 2 - INSTALLATION

WASHER

(KIT 5014792) MOUNTING BOLTS

CYCLONE DURADRAIN

TRAILER WATER

SEPARATOR

™

6. Never exceed manufacturer’s recommended
pressures.

7. Never connect or disconnect a hose or line
containing pressure; it may whip. Never remove a
component or plug unless you are certain all
system pressure has been depleted.

8. Use only genuine Bendix

®

replacement parts,
components and kits. Replacement hardware,
tubing, hose, fittings, etc. must be of equivalent
size, type and strength as original equipment and
be designed specifically for such applications and
systems.

9. Components with stripped threads or damaged
parts should be replaced rather than repaired. Do
not attempt repairs requiring machining or welding
unless specifically stated and approved by the
vehicle and component manufacturer.

10. Prior to returning the vehicle to service, make
certain all components and systems are restored
to their proper operating condition.

11. For vehicles with Antilock T raction Control (ATC),
the ATC function must be disabled (ATC indicator
lamp should be ON) prior to performing any vehicle
maintenance where one or more wheels on a
drive axle are lifted off the ground and moving.

REMOVING

Disconnect both upstream gladhands from the trailer or dolly
before beginning work on the Cyclone DuraDrain™ trailer water
separator.

1. Disconnect the supply and delivery line fittings.

2. Remove the mounting hardware, and spacer if applicable,
that secures the Cyclone DuraDrain™ trailer water
separator to the trailer frame rail.

INSTALLATION

A Cyclone DuraDrain™ trailer water separator can be installed
in the control and/or the supply line of the trailer between
the gladhand and the first valve in the trailer system. See
Figure 3 Trailer Schematic.

1. Identify the control and/or the supply line that the Cyclone
DuraDrain™ trailer water separator is to be installed in.
The trailer water separator should be installed at the
lowest point on the air line, but should not be too low
causing a dip in the air line. The Cyclone DuraDrain
trailer water separator must be installed vertically with
the purge nut pointing down to the ground to allow for
adequate draining.

2. Locate a mounting position on the trailer frame rail or
crossmember. Using the Cyclone DuraDrain™ trailer
water separator as a template, mark the location of the
mounting holes. Drill two mounting holes. Consult with
the trailer manufacturer prior to drilling any holes in the
frame rail or crossmember. If a mounting spacer is used,
install as shown in Figure 2. Secure using grade 2 or 5
mounting hardware.

™

3. Cut the air line and install a 3/8" NPT male fitting at
each end. Connect the air lines to the supply and delivery
ports of the Cyclone DuraDrain™ trailer water separator.

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