Bendix Commercial Vehicle Systems AD-IS EVERFLOW ASSEMBLY - Manual (Page 6)

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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.
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.
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, fi ttings, etc. must be of equivalent
size, type and strength as original equipment and
be designed specifi cally 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 specifi cally 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 Traction 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.
WARNING: DO NOT ATTEMPT TO ADJUST OR SERVICE
THE PRESSURE PROTECTION VALVES. INCORRECT
PRESSURE PROTECTION VALVE SETTINGS CAN
RESULT IN THE AUTOMATIC APPLICATION OF
THE VEHICLE SPRING BRAKES WITHOUT PRIOR
WARNING.
MAINTENANCE KITS
See the proper service data sheet or catalog page for
a full list of maintenance kits available.
NOTE: Kits are not available for the servicing of the
pressure protection valves (See Figure 4). Do not attempt
to adjust or service the pressure protection valves - these
are not service items.
• Governor/Delivery Check Valve Kit: This kit contains
the parts necessary to replace both the governor and
delivery check valve.
• 12 volt or 24 volt Heater and Thermostat Kits:
Contains a replacement heater and thermostat
assembly and related components required for
replacement.
• Purge Valve Housing Maintenance Kit: This kit
contains the parts necessary to rebuild the purge valve
subassembly.
• Service New Purge Valve Housing Assembly:
Contains a service new assembly and related
components to change the purge valve sub-
assembly.
• Service New Desiccant Cartridge Kit: This kit
contains the parts necessary to change the desiccant
cartridge only.
• Delivery Check Valve Maintenance Kit: This kit
contains the parts necessary to replace the delivery
check valve.
• Pressure Protection Valve Boot Replacement.
• AD-IS ® Air Dryer Replacement: Replaces the
complete air dryer assembly. Includes air dryer
assembly and governor.
• AD-IS ® Air Dryer Splash Shield Replacement Kit.
• Purge Reservoir Drain Valve: Replaces the drain
valve on the purge reservoir.
GENERAL
When rebuilding or replacing components of the air dryer
use only genuine Bendix
® parts. For ease in servicing,
the AD-IS ® air dryer has been designed so that any of the
maintenance kits shown in this manual can be installed
without removing the air dryer from the vehicle. CAUTION:
Always depressurize the air dryer purge reservoir, and all
other reservoirs on the vehicle to 0 p.s.i. before servicing
the air dryer.
If, after completing the routine operation and leakage tests,
it has been determined that one or more components of
the air dryer requires replacement or maintenance, refer
to the previous list to fi nd the appropriate kit(s).