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6. Insert the fluid wand into the reservoir from
which you intend to draw fluid, and open the
ball valve to allow the flow of fluid.
note: Continual operation of the pump is
not required to maintain fluid flow. Fluid will
continue to flow as long as there is vacuum
in the reservoir and the shutoff valve is open.
7. Once the required amount of fluid has
been evacuated or the fluid transfer bottle
is full, close the shutoff valve and release
the vacuum in the system by activating the
pressure relief lever on the hand pump.
8. If no future use of the evacuated fluid is
intended, dispose of it properly, clean the
fluid transfer bottle assembly with denatured
alcohol or a common household cleaner,
and store it properly.
brake bleeding
Many brake systems today feature Anti-Lock
functions and electronic controls that use a high
pressure electric pump to keep the system
pressurized. Bleeding or servicing these sys-
tems requires special procedures and cautions.
Always observe the following precautions when
servicing Anti-Lock brake system:
•
ALWAYS wear safety goggles when servic-
ing high pressure brake systems
•
ALWAYS depressurize the ABS system
prior to adding fluid or attempting service or
repair
•
Unless instructed to by the manufacturer's
procedure, NEVER open a bleeder valve or
loosen a hydraulic line while the ABS system
is pressurized
•
ONLY use recommended brake fluids.
DO NOT use silicone brake fluid in ABS
equipped vehicles.
•
Always refer to an appropriate repair manual
for additional information on Anti-Lock brake
systems.
depressurizing anti-lock brake systems
Always refer to the vehicle owner's manual or
appropriate service manual for additional infor-
mation on the depressurizing procedure. The
following procedure will work on most Anti-Lock
brake systems:
1. Ensure ignition switch is in the OFF position
or disconnect the negative battery cable.
2. Pump the brake pedal 25 to 40 times, until a
noticeable change is felt. Continue to pump
the pedal a few additional times. This should
eliminate most system pressure.
Form 824889
3. Open fluid reservoir or brake lines carefully.
Top off reservoir fluid and reconnect battery
cable when finished.
bleeding anti-lock brake systems
•
Always refer to the vehicle owner's manual
or appropriate service manual for manufac-
turer's brake bleeding procedure.
•
The front brakes on most Anti-Lock brake
systems may be bled in the conventional
manner.
•
Most hydraulic pump/pressure accumulator
units are fitted with a bleeder valve which
must be bled when the system has lost fluid
or is being replaced.
•
Some vehicles require the system be
pres¬surized when the rear brakes are bled.
•
Some automotive manufacturers use bleed-
ing procedures that require specialized
equipment.
pressure bleeding
The Pressure Bleed Accessory Kit is appropriate
for use as a pressure bleeder for hydraulic brake
and clutch systems.
Pressure bleeding is quick and easy because:
•
it does not require an assistant
•
it maintains pressure in the system while
bleeding multiple locations
•
it keeps the master cylinder full during
bleeding
The kit can also be used to identify the pres-
ence of leaks in an automotive hydraulic brake
or clutch system. Leaks are indicated by a
drop in pressure over a few seconds or min-
utes. The locations of leaks can be pinpointed
by visible seepage of fluid from the system
while under pressure.
WarnInG: Hydraulic/brake fluid is hazardous
and corrosive. Take precautions to protect
painted surfaces and skin from exposure,
and read and follow the fluid manufacturer's
warnings and instructions. Always wear safety
goggles when working with brake fluid.
caUtIon: Use your Mityvac Pressure Bleeder
only as directed. Read these instructions com-
pletely before attempting to service brakes. The
Mityvac Pressure Bleeder is intended for use
only by individuals experienced with bleeding
and servicing brake systems. If you are unsure
about how to properly service your vehicles
brake system, consult a trained professional.
Always follow the vehicle manufacturer's direc-
tions when bleeding the brake system.
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