Parking Brake Adjustment - Band-Type Parking Brakes; Dash-Mounted Booster Push Rod Adjustment; Front Brake Drum Removal And Installation; Typical Band Type Parking Brake - Ford 1964 F-100 Shop Manual

2-18
G R O U P 2-BRAKES
ANCHOR
ADJUSTING SCREW
C A M
BAND^ * N " h. LINK
ADJUSTING
ROD
ADJUSTING NUT ADJUSTING BRACKET
FOR UPPER PART NUT LOWER RETAINING
OF BRAKE BAND PART OF SCREWS
BRAKEBAND H1183-A
FIG. 4—Typical Band Type
Parking Brake
2. Turn the locknut forward
against the equalizer until the cables
are just tight enough to remove the
slack. Excessive tightening m a y pull
the brake shoes off their anchors.
3. W h e n the cables are properly
adjusted, tighten both nuts against
the equalizer.
PARKING BRAKE
ADJUSTMENT—BAND-TYPE
PARKING BRAKES
1. On cable-controlled parking
brakes (Fig. 4), m o v e the parking
brake lever to the fully released posi-
tion. O n a truck with a rod-type link-
age, set the lever at the first notch.
2. Check the position of the c a m
to m a k e sure the flat portion is rest-
ing on the brake band bracket. If
the c a m is not flat with the bracket,
remove the clevis pin from the up-
per part of the cam, and adjust the
clevis rod to allow the flat portion of
the c a m to rest on the brake band
f
I
2%
:i6 GAUGE
SHEET STEEL
.."")
-*—0 700-0 710 **
!
V
•
IK*'
FIG. 5—Push Rod Gauge
Dimensions
bracket. Install the clevis pin and
cotter pin (Fig. 4).
3. R e m o v e the lock wire from the
anchor adjusting screw, and turn the
adjusting screw clockwise until a
clearance of 0.010-inch is estab-
lished between the brake lining and
the brake drum at the anchor brack-
et. Install the lock wire in the anchor
adjusting screw.
4. Loosen the lock nut on the ad-
justing screw for the lower half of
the brake band, and adjust the screw
to establish a 0.010-inch clearance
between the lining and the brake
drum at the lower half of the brake
band (Fig. 4). Tighten the lock nut.
5. Turn the upper band adjusting
rod nut until a 0.010-inch clearance
Push Rod Gauge
H1277-B
FIG. 6-Push Rod Adjustment
is established between the upper half
of the band and the drum.
DASH-MOUNTED BOOSTER
PUSH ROD ADJUSTMENT
The push rod is provided with an
adjustment screw to maintain the
correct relationship between the
booster control valve plunger and
the master cylinder piston. Failure
to maintain this relationship will pre-
vent the master cylinder from com-
pletely releasing hydraulic pressure
and can cause the brakes to drag.
R e m o v e the master cylinder for ac-
cess to the booster push rod.
T o check the adjustment of the
screw, fabricate a gauge of the di-
mensions shown in Fig. 5. Then
place the gauge against the master
cylinder mounting surface of the
booster body as shown in Fig. 6.
The push rod screw should be ad-
justed so that the end of the screw
just touches the inner edge of the
slot in the gauge.
REMOVAL AND INSTALLATION
FRONT BRAKE DRUM
R E M O V A L
1. Raise the truck and install
stands.
2. Back off the brake shoe adjust-
ment. R e m o v e the hub cap and/or
dust cap.
3. R e m o v e the spindle nut cotter
pin, spindle nut, and washer.
O n trucks with 4-wheel drive, re-
m o v e the snap ring from the end of
the axle shaft. Slide the driving hub
off the shaft. R e m o v e the lock nut
using tool T59T-1197-AA, the nut
lock, and the bearing adjusting nut.
If the truck is equipped with a
locking type hub refer to Part 4-4.
4. R e m o v e the wheel assembly.
5. R e m o v e the front wheel to hub
retaining nuts or rim and tire retain-
ing nuts. R e m o v e the wheel or rim
and tire from the hub and drum.
6. R e m o v e the brake drum retain-
ers and retaining bolts, screws, or
bolts and nuts.
7. R e m o v e the brake drum from
the hub.
INSTALLATION
1. Place the brake d r u m to the
hub and install the retainers and re-