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3 Connect the fluid dispensing hose or other
accessory to the quick-connect coupler
extending from the reservoir. Ensure the
coupler sleeve snaps forward to lock the
connection.
4 While observing the pressure gauge, operate
the pump to build pressure in the reser-
NOTE
Depending on the application, the shut-
off valve installed in the fluid dispensing
hose may be left open or closed. If left
open, fluid will begin to flow as soon as
the pump is operated. If closed, pressure
will build in the reservoir as indicated on
the gauge.
voir to the desired level, or until the
desired amount of fluid has been
dispensed.
5 Once the proper amount of fluid has been
dispensed, close the shutoff valve and
NOTE
A built-in pressure relief valve is
designed to open and maintain maxi-
mum pressure between 17 and 23 psi
(1.2 and 1.6 bar).
Continual operation of the pump is
not required to maintain fluid flow. Fluid
will continue to flow as long as there is
pressure in the reservoir and the shutoff
valve is open
WARNING
Do not exceed 25 psi (1.7 bar) pressure
in the reservoir. The relief valve should
prevent this, but if it fails and the pres-
sure exceeds 25 psi, immediately dis-
continue use and send the unit to an
authorized service center for repair or
replacement.
bleed off the pressure by tilting the pres-
sure relief knob located on the lid.
6 Depending on the type of fluid and future
intended use, you may store the remain-
ing fluid from the reservoir. Otherwise
empty the reservoir, clean it with dena-
tured alcohol or a common household
cleaner, and store it properly.
Pressure brake
bleeding
The Mityvac fluid dispensing system is
appropriate for use as a pressure bleeder for
hydraulic brake and clutch systems. Addi-
tional accessories and adapters may be
required and are available from Mityvac for
performing this function.
1 Park the car, set the parking brake, and
turn off the engine.
WARNING
Hydraulic/brake fluid is hazardous and
corrosive. Take precautions to protect
painted surfaces and skin from expo-
sure, and read and follow the fluid man-
ufacturer's warnings and instructions.
2 Open and secure the hood.
3 Locate the brake or clutch master cylin-
der and remove the cap.
4 Extract as much used hydraulic fluid
from the master cylinder reservoir as
possible, and refill it with new fluid.
5 Select the appropriate master cylinder
pressure bleed adapter and install it
securely onto the master cylinder
reservoir.
6 Before adding fluid to the Dispenser,
connect the fluid dispensing hose to the
female quick-connect coupler extending
from the reservoir. Ensure the coupler
sleeve snaps forward to lock the
connection.
7 Connect the other end of the fluid dis-
pensing hose to the male quick-connect
coupler on the master cylinder pressure
bleed adapter. Ensure the coupler sleeve
snaps forward to lock the connection.
8 Ensure the shutoff valve is open, and oper-
ate the manual pump to pressurize the
system to 10 psi (0.7 bar).
4
9 Watch the pressure gauge to ensure
there are no leaks. If the pressure drops,
relieve the remaining pressure in the
system by tilting the pressure relief knob
located on the lid, remove and retighten
the lid from the dispensing reservoir and
the adapter on the master cylinder res-
ervoir, and recheck the system for leaks.
10 Once you've proven all connections are
secure and the master cylinder adapter
does not leak, remove the lid w/ pump
WARNING
Serious injury and/or equipment dam-
age can occur if the lid is removed from
the dispensing unit or the adapter from
the master cylinder, without first reliev-
ing the system pressure.
from the dispensing unit and add up to 2
quarts (2 liters) of a manufacturer's rec-
ommended new hydraulic fluid from a
sealed container.
11 Reinstall the lid w/ pump and tighten it
securely.
12 Consult a service manual to determine
the recommended bleed pressure and
the proper bleeding sequence for the
vehicle being serviced.
13 Observing the pressure gauge, operate
the pressure pump to achieve the rec-
ommended pressure.
14 Connect the bleed reservoir to the bleed
screw of the first cylinder to be bled.
15 Open the bleed screw. Allow fluid to flow
out until only clear new fluid with no visi-
ble air bubbles is streaming from the
screw, and then re-tighten the bleed
screw to the manufacturer's recom-
mended torque.
16 Perform the same procedure on all
remaining bleed screws. Operate the
pressure pump as required to maintain
adequate pressure.
17 Once bleeding is complete, relieve the
pressure in the reservoir and master
cylinder by tilting the pressure relief
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