Technical data

13773-001
32-42
Page 6 30 Nov 2000
G. Brake Master Cylinder (See Figure 32-422), (See Figure 32-423)
(1) Removal - Brake Master Cylinder
(a) Drain hydraulic fluid from brake system.
(b) Remove cotter pins and washers from rudder pedal pivot tubes.
(c) Slide rudder pedal pivot tube from bearing.
(d) Detach rudder pedals from torque tube weldment.
(e) Disconnect hoses from master cylinders. Cap or plug ports and hoses.
(f) Remove cotter pins, washers, and clevis pins from upper connection at rudder pedals of
each master cylinder.
(g) Pull rudder pedal aft and remove cotter pins, washers, and clevis pins at floorboard
mounting points and remove master cylinder.
(2) Disassembly - Brake Master Cylinder
(a) Drain residual hydraulic fluid open ports of body.
(b) Remove snap ring at end gland from cylinder body and withdraw piston rod assembly.
(c) Remove snap ring from piston end of rod assembly, and slide bushing, piston spring, pis-
ton, end gland, return spring, washer, and star washer from piston rod.
(d) Remove O-rings, from piston, end gland, and piston rod.
(e) Remove nut and clevis from piston rod (if required).
(f) Inspect master cylinder components.
(3) Reassembly - Brake Master Cylinder
(a) Acquire necessary tools, equipment, and supplies.
(b) Lubricate and install O-rings, on piston, end gland, and piston rod.
(c) Install clevis and nut on piston rod.
(d) Slide star washer and washer over piston rod against nut.
(e) Place return spring on piston rod and slide end gland onto piston rod.
(f) Slide piston, piston spring, and bushing onto small shaft of piston rod and secure snap
ring.
(g) Adjust clevis to obtain on overall length of 8.420 (+0.25/ - 0.15) inches between clevis eye
and floor attach point at full extension. Torque nut to 35 inch pounds. (3.85 N.m.)
(4) Installation - Brake Master Cylinder
(a) Place master cylinders on floorboard mounting points, install clevis pins, and secure with
washers, and cotter pins.
(b) Connect brake hoses to master cylinders. Upper port is inlet, lower port is outlet.
(c) Connect piston rod clevis to upper connection at rudder pedals and install washers, clevis
pins, and cotter pins.
(d) Place rudder pedals in proper alignment with torque tube weldment and install rudder
pedal pivot tubes, washers, and cotter pins.
Description P/N or Spec. Supplier Purpose
Hydraulic Fluid MIL-H-5606 Any Source Lubrication