Chrysler Disc Brake; General Service Information; Disc Brake Components; Chrysler Disc Brake Caliper Mounting - Dodge D150 1990 Service Manual

5 - 22 BRAKES
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C H R Y S L E R DISC B R A K E
INDEX
Page
Brakeshoe Installation 26
Brakeshoe Removal
. 25
Caliper Installation 29
Caliper Removal 27
Caliper Overhaul 27
GENERAL SERVICE INFORMATION
DISC BRAKE COMPONENTS
The Chrysler disc brake assembly is used on two-
wheel drive models and four-wheel drive models w i t h
the 3300 and 4000 l b front axle. T h e caliper is a slid-
i n g type w i t h a single, 3.1 i n c h (78.7 m m ) diameter
caliper piston (Figs. 1 a n d 2). Cast i r o n , v e n t i l a t e d
die brake rotors are used for a l l applications.
Each caliper is mounted on a n adapter attached to
the steering k n u c k l e (Fig. 2). Each caliper slide lat-
erally on surfaces machined o n t h e caliper a n d
m o u n t i n g adapter. The adapters support t h e caliper
and m a i n t a i n fore a n d aft a l i g n m e n t o f the caliper
and brakeshoes. Two retainer clips are used to m a i n -
t a i n caliper alignment b u t p e r m i t l a t e r a l movement
needed for caliper operation.
Non-metallic caliper pistons are used for a l l a p p l i -
cations. The pistons are made o f a phenolic resin ma-
terial.
SPLASH
SHIELD RK71
Fig. 1 Chrysler Disc Brake Caliper Mounting—Rear
View
Page
Disc Brake Inspection 24
General Service Information 22
Rotor Inspection And Service 29
Rotor Installation 31
Rotor Removal 29
SHIELD RK72
Fig. 2 Chrysler Disc Brake Caliper Mounting—Front
View
V e n t i l a t e d , cast i r o n disc brake rotors are used for
a l l applications. T h e rotors are serviceable a n d can
be machined to restore surface finish w h e n neces-
sary.
The outboard brake shoe has flanges t h a t locate
and position the shoe o n t h e caliper fingers (Fig. 3).
B r a k i n g force on t h i s shoe is t a k e n by t h e caliper.
The inboard shoe is held i n position by t h e adapter
and reacts directly o n t h e adapter.
The caliper is a one-piece casting w i t h t h e inboard
side c o n t a i n i n g t h e single piston cylinder bore (Fig.
3). A square-cut piston seal is located i n a machined
groove i n t h e cylinder bore. A rubber dust boot is
used to prevent d i r t , water, road splash f r t o m enter-
i n g t h e caliper piston bore. The boot is located i n a
counterbore machined i n t o t h e outboard end of t h e
caliper piston bore.