Quantcast Brake Chambers

 

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Figure 7-1. Brake assembly
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TM-5-6120-250-34 Substation Trailer Mounted 500 KVA AC 4160-416Y/240V 208Y/120V 3 Phase 50/60 Hertz Avionics Model 950-2200A Manual
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Axle Installation
7-7. Brake Chambers
new diaphragm assures; trouble free operation during the
a. Operation. The air brake chambers converts the
life of the new lining.
pressure of compressed air into mechanical force and
(3) To remove air chamber remove air line (1,
motion.
Air entering the unit forces the chamber
fig.7-2) Remove cotter pin (2) and clevis pin (3) from
diaphragm to flex and carry its push rod outward. When
slack adjuster (4). Loosen and remove the two nuts (5)
pressure is released, the rod and diaphragm resume their
and washer(6) securing air chamber to axle bracket. Pull
static position due to action of the unit return spring.
chamber (7) with push rod /8) up and off chamber axle
When the air flexes the diaphragm carrying the push rod
bracket.
outward, this actuate. the slack adjuster. The rotation of
(4) To examine chamber diaphragm loosen and
the slack adjuster rotates the cam shaft which is
remove ring clamp which horde the mounting plate'
connected to the "S" cam acting on the cam followers of
diaphragm and pressure plate assembly.
the brake -hoes.
(5) When assembling chamber, dust lip. of plate
and diaphragm with talc powder.  Before tightening
b. Maintenance Repair.
clamp, align plate and diaphragm with moderate pressure,
sufficient to allow the diaphragm to slip into a firm seat,
(1) At brake adjustment check chamber for dents
without wrinkling or bulging against plates. Test assembly
and leaks, hose or pipe connection. for leaks and wear,
for air leaks with soap suds. and retighten clamps or bolts
and chamber linkages for binds and balanced alignment
as required.
on left hand and right hand brakes.
(6)  Reinstall air chamber in reverse order of
preceding step. (3).
(2) At brake reline remove the pressure plate for
inspection which includes the diaphragm, hose or pipe
connection and outrigging. Installation of a
Figure 7-2. Brake air chamber removal.
wheels heels are not supporting any weight.
7-8. Axle Replacement
(2) Disconnect air line connection (1, fig. 7-3) to the
a
Axle Removed
brake chambers (2) mounted on the axle to be removed.
(1) Raise trailer and support the body so that the
7-4

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