Master Cylinder; Install; Rebuild; Bleed Brake System - Taylor-Dunn C0-T50-80 Service And Parts Manual

C0-T50-80

MASTER CYLINDER

WARNING
This section is one section of a complete service
manual. Before starting any procedure, read all
warnings and instructions that are located in the
Service Guidelines chapter.
Remove
1: Remove the dash assembly.
2: Disconnect the brake line couplers at the
floorboard.
3: Place a drain pan under both brake lines and
pump the brake pedal to expel all fluid from the
master cylinder.
4: Reconnect the couplers.
5: Disconnect the brake lines from the master
cylinder.
6: Remove the four bolts holding the master cylinder
to the Hydro-Boost assembly and remove the
master cylinder.

Install

1: Install the master cylinder onto the Hydro-Boost
assembly.
2: Tighten the master cylinder mounting bolts per
torque listed in the Hardware Torque table at the
end of this section.
3: Connect the brake lines and bleed the brake
system. Refer to "Bleed Brake System"
procedure.
4: Reconnect the battery, remove the blocks from
behind the wheels and test drive the vehicle.

Rebuild

There are no internally serviceable parts in the master
cylinder.
WARNING
• Only use DOT 3 brake fluid from a new sealed
container.
• DOT 3 brake fluid is corrosive and will damage
paint finishes.
• Dispose of brake fluid in accordance with local
state and federal regulations.
• Read and follow all warnings on the brake fluid
container.
MC-T50E-02

BLEED BRAKE SYSTEM

Note: Start this procedure at the wheel furthest
from the master cylinder, then work toward
the wheel closest to the master cylinder.
The rear bleeder valves can be accessed
through the center rear inspection cover.
1: Thoroughly clean the area around the master
cylinder cap and remove the cap.
2: Add brake fluid from a new sealed container to
the master cylinder. Fill to 1/4" from the top of the
master cylinder chamber.
3: The master cylinder fluid level will drop as the
brakes are bled. Periodically check and fill the
master cylinder during this procedure. Do not
allow the fluid level in the master cylinder to drop
too low as this will allow air into the brake lines.
4: Attach a clear hose to the bleeder valve on the
brake cylinder that is to be bled. Route the hose
into a clear container for waste brake fluid.
5: Pump the brake pedal a few times and then press
and hold light pressure to the brake pedal.
6: Open the brake bleeder valve.
7: Depress the foot pedal to the floor and then close
the bleeder valve. Do not release pressure on the
brake pedal until the bleeder valve is closed.
8: Slowly release the foot pedal, allowing it to return
to its released position.
Note: Check and fill the master cylinder frequently
during the bleeding process. Do not allow
the fluid level in the master cylinder to drop
low enough to allow air to enter the brake
lines. If air enters the brake lines during the
bleeding process, then you will have to start
again from the beginning.
9: Repeat the above steps until you are sure that
all of the air is expelled from the brake line. Any
air bubbles that can be seen in the clear hose
attached to the bleeder is an indication that there
is still air in the brake lines.
10: Repeat this process with each of the other
wheels.
Note: When finished, top off the master cylinder
with fluid. See Check Master Cylinder Fluid
for information on filling the master cylinder.
11: Reconnect the battery, remove the blocks from
behind the wheels and test drive the vehicle.
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