Idiomas disponibles
Idiomas disponibles
!
WARNING
When working on air system components the
following precautions should be observed.
1. Stop engine when working under the
vehicle. Always block the vehicle wheels to
prevent a fore or aft roll. Bleeding off
system pressure may cause the vehicle to
roll. Keep hands away from brake chamber
push rods and brake adjusters; they may
apply as system pressure drops.
2. Never connect or disconnect a hose or line
containing air pressure. It may whip as air
escapes. Never remove a component or a
pipe plug unless you are certain all system
air pressure has been exhausted.
3. Never exceed recommended working air
pressure and always wear safety glasses
when working with air pressure. Never look
directly into component ports or direct a
pressurized air flow at anyone.
4. Never attempt to disassemble a component
until you have read and understood all
recommended procedures. Some
components contain powerful springs and
injury can result if not properly
disassembled. Use only proper tools and
observe all precautions pertaining to the use
of those tools.
INSTALLATION INSTRUCTIONS
1. The isolation valve should be installed directly to
the air dryer inlet port (1/2-14 NPTF external
thread screws directly into top of air dryer) with
arrow pointing at the air dryer.
2. Connect compressor exhaust line to inlet port of
valve. (1/2-14 NPTF internal thread arrow points
to valve).
3. Inlet temperature should not exceed 250ºF. A
compressor discharge line greater than 6 feet will
normally produce temperatures less than 250ºF.
4. Connect a line (3/16 I.D. max., 1/8 I.D. preferred)
from top of valve (unloader port) to control line
from air dryer.
OPERATIONAL CHECKS:
Once the unit is installed, start the engine, build up
pressure to 100 psi and shut off the engine. Check
for air leaks at the inlet and outlet of both the isolation
valve and air dryer. Correct any leakage problems.
Restart the engine and build up pressure until the
compressor stops pumping. The dryer purge valve
opens and immediately expels a large volume of air,
followed by a slow flow of air lasting approximately
30 seconds. Shut off the engine and check all
connections for air leakage. Correct any leakage
problems.
1/8 x 1/8 x 1/8 Tee
1/8-27 NPTF
Unloader Port
1/2-14 NPTF Inlet Port
from Compressor
Isolation
Valve
Air Dryer
To Governor
Unloader Port
INSTALLATION INSTRUCTIONS
FOR CUMMINS/HOLSET MODEL SS338E ONLY
1. The isolation valve should be installed directly to
the air dryer inlet port (1/2-14 NPTF external
thread screws directly into top of air dryer) with
arrow pointing at the air dryer.
2. Connect compressor discharge line to inlet port
of valve. (1/2-14 NPTF internal thread arrow
points to valve).
3. Inlet temperature should not exceed 250ºF. A
compressor discharge line greater than 6 feet will
normally produce temperatures less than 250ºF.
4. Connect a line (3/16 I.D. max., 1/8 I.D. preferred)
from top of valve (unloader port) to control line
from air dryer.
5. Install a one-way check valve in the top of the
first reservoir that is fed by the air compressor.
Insure that air is allowed to flow from the
reservoir to the isolation valve. Connect the
outlet of the one-way check valve to the
1/8-NPTF port that is opposite the 1/2-14 NPTF
internal port on the isolation valve.
check valve is a Cummins part only. Part #: 3559522
OPERATIONAL CHECKS:
Once the unit is installed, start the engine, build up
pressure to 100 psi and shut off the engine. Check
for air leaks at the inlet and outlet of both the
isolation valve and air dryer. Correct any leakage
problems. Restart the engine and build up pressure
until the compressor stops pumping. The dryer
purge valve opens and immediately expels a large
volume of air, followed by a slow flow of air lasting
approximately 30 seconds. Shut off the engine and
check all connections for air leakage. Correct any
leakage problems.
1/8 x 1/8 x 1/8 Tee
1/8-27 NPTF
Isolation
Valve
Reservoir
Air Dryer
To Governor
Unloader Port
Note: One-way
1/8-27 NPTF
Unloader Port
1/2-14 NPTF Inlet Port
From Compressor
Flow
One-Way
Check Valve
Reservoir
