PS Magazine - MARCH 1984
PS, The Preventative Maintenance Monthly
ISSUE 376
MARCH 1984
TM
instructions fr adjusting the brake slack adjusters on trUcks and traiLers
with air brake systems are sometimes a LittLe short on detail and a little long
on conFsion.
Here's the right procedure:
C
First, raise the wheel of the
ground.
®
Rotate the wheel and tu± the
slack adjuster adjusting screw coun-
terclocKwise untI the brake shoes
are tight against the bra²e Drum anD
the wheel won't tu±³
±
Then tu± the adjusting screw
cloc²w´se untI the wheel doesn't
dragµabout
3
cLcks or
v
to
V2
tu±.
/
0
Get a ¶e·ow mech to apply the
bra²es and measure the angle be¸
tween the puSh rod and slack ad-
Juster. ¹t should be slightlY greater
than
go0•
¹¶ it's not, correct the
angle.
²
Remove the cOºter pin and clevis pin and loosen the adjus»ing screw
to disconnect the slack adjuster ¶rom the push rod.
³
¼oosen the push rod locknut and tu± the Yoke counterclockWe to
increase or clockWe to decrease the angle.
´
Put the clevis pin into the slack
adjuster and push rod, and get Your
1.
buddY to push the brake pedal
again.
I
µ
Measure the slack adjuster and
•
i
push rod angle again.
1
¶
I
it's over
goO,
tighten the push
: ½
rod locknut and put the cotter pin
·
back into the clevis pin.
I
not, repeat
)
steps
4
through
8
unt¾¿ You get the
angle rightÀ
@
Fina·Y, go back and readjust
the adjusting screw.
Back to Top Back to Top
