DEMO - 1965 Ford Truck Shop Manual - ForelPublishing.com

PART 2-7-AIR BRAKES 2-79
DASH
FLOOR MAT
4]/2 INCHES
Wooden 8/oc/c
BRAKE TREADLE
TREADLE BASE
ASSEMBLY
BRAKE CHAMBER
PUSH ROD
CARRIER PLATE
FLOOR
PAN
CROSS SHAFT ASSEMBLY
FIG. 11 —Treadle and Linkage
Adjustment
HI190-A
and place a AV2 inch wood block
between the brake treadle and the
floor pan sheet metal (Fig. 11).
3. While holding the treadle
against the wood block (Fig. 11), adjust
the clevis rod (Fig. 8), so that the
clevis pin can be inserted through
the adjusting clevis and the valve
actuating arm.
4. Remove the wood block and
tilt the cab. With the cab tilted, observe
the rear stop lights. If the lights
are "on", shorten the clevis rod by
turning the clevis (Fig. 8) one turn
at a time until the stop lights go
"out".
ADJUSTING
SCREW
SLACK ADJUSTER
CAM
ROLLER
RETRACTING SPRING
FIG. 12—Typical Front Brake Assembly
ANCHOR
PINS
RETAINING CLIP
BRAKE SHOE
BRAKE CHAMBER SLACK ADJUSTER AIR LINE
H1178-B
SLACK ADJUSTER
ADJUSTMENT
Apply the brakes and measure the
travel of the brake chamber push
rod (Fig. 12). If equipped with a
Maxibrake unit, the minimum air
pressure should be 90 psi while measuring
the travel. The travel should be
kept to the minimum possible without
causing the brakes to drag. The
maximum travel should not exceed
the dimensions listed in Table 1. Adjustment
of the yoke on the brake
chamber push rod should not be
changed. When new, the yoke is adjusted
so that the slack adjusterbrake
chamber push rod angle is
slightly greater than 90° when the
brakes are properly adjusted and the
brakes are applied. Brake lining wear
will not change this angle as long as
the slack adjusters are kept adjusted
to compensate for lining wear.
FIG.
MOUNTING BRACKET
13-Rear Brake Adjustment
H1179-B