(4) Insure that rubber boots are properly positioned
Caution: Do not distort or crack cylinder
in cylinder grooves.
body when securing cylinder in vise.
Secure master brake cylinder in vise.
3-32. Master Brake Cylinder
Remove boot (21 and piston rod (1).
a. General. The hydraulic master brake cylinder is
Note. Piston assembly parts will spring
located below the toe and floor plates on the inside
outward when lockwire is removed if parts are are
frame of the lift truck. The master brake cylinder and
not held in place.
hydraulic brake fluid reservoir are combined into one
Remove lockwire (3) from piston
body and are joined by intake and bypass ports located
assembly (5), while holding parts in place.
within the cylinder wall. Internal parts are removed and
Carefully remove piston plate (4), piston
installed at the push rod end of the cylinder. An electrical
assembly (5), primary cup (6), spring assembly (7), and
stop light switch is located on the opposite end of the
valve assembly (8).
cylinder. The cylinder piston is actuated through linkage
Remove stop light switch, fluid passage
when pressure is applied to the brake pedal.
bolt, outlet fitting (11), and gaskets 19 and 10) from
b. Removal. Remove the master brake cylinder
outlet end of cylinder.
Remove filler cap (12) and nonmetallic
washer (13) from body.
Figure 3-45. Master brake cylinder, exploded view.