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INSTRUCTIONS FOR USE WITH RADIATOR
COOLING TEST CAP ADAPTER WITH VENT
Step #1 PREPARE THE VEHICLE THAT IS TO BE
TESTED
• Drain some of the antifreeze out of the radiator
until the water level is approximately 1-1/2
inches below the fill neck of the radiator.
• NOTE: ANTI-FREEZE SHOULD NOT BE
ALLOWED INTO THE LEAK TEST TOOL. If this
happens, stop the test when the coolant reaches
(LEVEL)
the red line
Clean the tool and retest.
• NOTE: This step is necessary to provide a void in
the top of the radiator for CO2 to accumulate.
Step #2 PREPARE THE TOOL FOR TESTING (fig. 3)
• Remove the rubber cone from the bottom of the
test chamber.
• Install the brass "T" (43708) to the bottom of the
test chamber. Loosen the nut on the top of the
brass "T". Insert the test chamber into the brass
"T" and tighten the nut. Close the valve on the
side of the brass "T".
• Select a test cap and attach it to the quick
coupler at the bottom of the brass "T".
• Remove the cap from the top of the test
chamber.
• Pour the test fluid into the test chamber to the
line marked, "CO2 leak detector."
• NOTE: Keep the bottle of test fluid capped to
reduce the risk of contamination
• Install the cap onto the top of the test chamber.
• Attach the rubber bulb pump to the cap on the
top of the test chamber.
Step #3 TEST THE VEHICLE (fig. 4)
• Attach the test chamber to the radiator fill neck.
• Start the car.
• Squeeze the rubber bulb pump several times to
draw the vapors from the radiator into the test
chamber.
• When the test is complete. Turn off the vehicle.
Open the valve on the side of the brass "T" to
release any pressure that accumulated during
the test. Remove the test chamber from the
radiator.
Step #4 CHECK THE RESULTS (fig. 5)
•
If the test fluid turns yellow, then CO2 is
leaking into the coolant system.
•
If the test fluid remains blue, then CO2 is not
leaking into the coolant system.
•
NOTE: The presence of CO2 in the cooling
system does not guarantee that the problem
is solely a leaking head gasket. Other failures
like, but not limited to a warped or cracked
in the lower chamber.
fig. 3
fig. 4
fig. 5
3
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