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 Insufficient travel will result in ineffec-
ter
cylinder.
tive
brakes.
With
brakes
released,
insert
a
small
testing
(2) T e s t .
rod through one of two inspection holes in brake air
Mark
testing
rod
at
surface
of
mounting
chamber.
bracket
when
testing
rod
contacts
push
rod
in
air
chamber. Apply brakes and again mark testing rod at
surface of mounting bracket with testing in in con-
tact with push rod. Withdraw testing rod and measure
The distance between marks
distance
between
marks.
will
indicate
amount
of
push
rod
travel.
Brakes
should
be adjusted to permit a minimum of -inch travel
and a maximum of 7/8-inch travel.
Adjust
brakes
(par.
56b) as neccssary.
c. Removal.
line
at
elbow
in
cover
of
brake
air
(1) Disconnect air
chamber.
(2) Disconnect flexible hydraulic line leading from hydraulic
master
cylinder.
(1) Disconnect nut connecting vent tube assembly to filler
c a p o f h y d r a u l i c m a s t e r cylinder
and
remove
vent
tube
assembly.
(4) Remove three cap screws, lockwashers, and hex nuts
securing
mounting bracket of brake air chamber to
Lift off brake air chamber and hy-
chassis frame.
draulic master cylinder as a unit.
(5) Separate hydraulic master cylinder. from brake air
chamber and mounting bracket by removing three hex
nuts and lockwashers which secure cylinder. to bolts
welded to bracket and puiling cylinder out of brake
air chamber.
100
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