TM 5-3825-213-35
12
Piston
18
Spring, inner
13
Pin, cotter, 1/16 x 3/4 in.
19
Preformed packing
14
Nut, slotted, 5/16-24
20
Preformed packing
15
Seat
21
Spring
16
Shim
22
Body
17
Spring, outer
Figure 26. - Continued.
119. Throttle Valve Assembly Cleaning, Inspection,
120.
Throttle Valve Assembly Reassembly and
and Repair
Installation
a. Cleaning. Clean all parts with an approved
a. Reassembly. Reassemble the throttle valve
cleaning solvent and dry thoroughly.
assembly in the reverse of numerical sequence
illustrated on figure 26.
b. Inspection and Repair. Inspect all parts for
b. Installation. Install the throttle valve assembly
defective condition.
Replace or repair all worn,
damaged, or defective parts.
(TM 5-3825-213-20).
Section IV. BRAKE TREADLE VALVE ASSEMBLY
assembly in numerical sequence as illustrated on figure
121. General
The treadle valve is a foot-operated, single-acting,
pressure-regulating air valve. It controls the flow of air
from the air reservoir tanks to the four wheel brake
123. Treadle Valve Assembly, Cleaning, Inspection,
cylinders.
Air pressure applied to the cylinder is
and Repair
proportional to the effort exerted on the treadle valve.
a. Cleaning. Clean all parts with an approved
The valve assembly is divided into two sections, the
cleaning solvent and dry thoroughly.
upper body and the lower body, which are separated by
a diaphragm. The upper body contains the metering
b. Inspection and Repair. Inspect all parts for
valve, which regulates air pressure supplied to the
defective condition. Replace or repair worn, damaged,
master cylinder. The lower body contains the inlet
or defective parts.
valve, which allows air to enter the valve assembly
when the treadle is depressed, and the exhaust valve,
124.
Treadle Valve Assembly Reassembly and
which allows air to escape from the valve assembly
when the treadle is released.
Installation
a. Reassembly. Reassemble the treadle valve
assembly in the reverse of numerical sequence
122.
Treadle Valve
Assembly
Removal
and
illustrated on figure 27.
Disassembly
b. Installation. Install the treadle valve assembly
a. Removal. Remove the treadle valve assembly
(TM 5-3825-213-20).
(TM 5-3825-213-20).
b. Disassembly.
Disassemble the treadle valve
80
