Lesson 6/Learning Event
PREPARING THE FILLER/BLEEDER FOR OPERATION
Filler Unit
a. Refer to Figure 67.
Loosen valve cap A to exhaust the air chamber.
Leave valve A open.
Also, ensure that valve B is fully open.
b. Wipe dirt from the top of the tank and open filler plug C, Figure
67.
Fill the fluid chamber to the brim of the inlet with brake
fluid (silicone, automotive all weather, operation and preservative,
military specification Mil-B-46176).
c. Close plug C, Figure 67, hand tight. Tighten air cap A securely and
fill the unit with air through cap A until the gage reads in the
black, 20 to 30 psi (20 psi is sufficient to bleed all vehicles).
WARNING
DO NOT CHARGE THE UNIT WITH AIR IN EXCESS OF 50 PSI.
DO NOT USE SHARP TOOLS OR OTHER PROBES
TO
RETURN
DIAPHRAGM TO ITS NORMAL DOWN POSITION.
d. Open bleeder screw D, Figure 67, to bleed any air that may be
trapped in the fluid section of the filler/bleeder.
e. On the initial filling only, the hose should be bled using the male
quick-disconnect fitting, part number T1712, Figure 69.
Connecting Filler/Bleeder to Master Cylinder
a. Clean the top of the master cylinder to keep dirt from dropping into
the opening.
Remove the filler cap from the master cylinder and
clean the gasket seat thoroughly.
b. Refer to Figure 68.
Select and install the proper adapter and
gasket. On most adapters, hand tightening is sufficient with clean
surfaces and the proper gaskets.
Others may require a wrench to
tighten enough to hold the proper pressure.
c. Screw the quick-disconnect male fitting, part number T1712, Figure
69, into the adapter on the master cylinder and hand tighten.
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