Pressure Brake Bleeding - Matco Tools PFEDBB25 User And Maintenance Instructions

Pressure brake
bleeding
1 Park vehicle on level surface, set parking
brake, and turn off engine.
2 Locate brake or clutch master cylinder
and remove cap.
CAUTION

Do not allow fluids to contact skin or
painted surfaces. Fluids are hazardous
and corrosive to skin and painted
surfaces.
Failure to comply could result in injury
or damage to equipment.
3 Extract as much used hydraulic fluid
from master cylinder reservoir as possi-
ble (→ To evacuate fluid, page 4).
4 Refill with new fluid.
5 Select appropriate master cylinder pres-
sure bleed adapter and install securely
onto master cylinder reservoir.
NOTE
Do not add fluid to dispenser reservoir
until dispensing hose connections have
been made and system has been
checked for leaks.
6 Before adding fluid to reservoir (12),
connect fluid dispensing hose (14) to
quick-connect coupler (4) on reservoir.
(→ Fig. 4, page 7).
7 Connect opposite end of the fluid dis-
pensing hose (14) to the male quick-con-
nect coupler on the master cylinder
pressure bleed adapter.
NOTE
Verify all coupler sleeves snap to lock
connection.
8 Ensure shut-off valve on fluid dispensing
hose (14) is closed.
9 Connect air supply to swivel coupler (7).
10 Pull top lever (6) back to build pressure in
reservoir.
11 Observe pressure gauge (9) and adjust
inlet air supply to achieve 10 psi (0.7 bar)
in reservoir. If inlet air supply cannot be
adjusted, push top lever (6) to center
position when reservoir pressure
reaches 10 psi (0.7 bar).
12 Open shut-off valve on fluid dispensing
hose (14) and watch pressure gauge (9)
to ensure no leaks are present. If pres-
sure steadily drops, relieve remaining
pressure in system by tilting pressure
relief knob (8) located on lid (10), remove
and retighten lid from dispensing reser-
voir (12) and adapter on master cylinder
reservoir, and recheck system for leaks.
6
13 Relieve pressure from reservoir (12) by
tilting pressure relief knob (8).
WARNING

Do not remove lid from reservoir or
adapter from master cylinder with
system pressurized.
Failure to comply could result in death
or serious injury.
14 Remove lid (10) from reservoir (12)
and add up to 2 quarts (2 liters) of
manufacturer's recommended new
hydraulic fluid.
NOTE
Consult service manual to determine
recommended bleed pressure and
proper bleeding sequence for vehicle.
15 Install lid and tighten securely.
16 Pull top lever (6) back to build pressure in
reservoir.
17 Observe pressure gauge (9) and adjust
inlet air supply to achieve 10 psi (0.7 bar)
in reservoir. If inlet air supply cannot be
adjusted, push top lever (6) to center
position when reservoir pressure
reaches 10 psi (0.7 bar).
18 Connect bleed reservoir to bleed screw
of first cylinder to be bled.
19 Open bleed screw.
20 Allow fluid to flow out until only clear new
fluid with no visible air bubbles is
streaming from screw. Re-tighten bleed
screw to manufacturer's recommended
torque.
21 Perform procedure on all remaining
bleed screws.