Dodge D150 1990 Service Manual page 247

5 - 38 BRAKES
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Inspect a n d clean t h e inboard shoe a n t i - r a t t l e
spring, support key spring, r e t a i n i n g screw a n d cali-
per support k e y (Fig. 13). Replace these components
i f w o r n or damaged.
SHOE AND
LINING
(OUTER)
SHOE AND
LINING
(INNER)
CALIPER BLEEDER SCREW
KEY
RETAINING
SCREW
SEAL
CALIPER
SUPPORT
KEY
SUPPORT SPRING
BOOT ANTI-RATTLE SPRING RN1059
Fig. 13 Caliper Components
CALIPER ASSEMBLY
(1) M o u n t caliper i n vise equipped w i t h protective
jaws. Do n o t overtighten vise. Excessive pressure
could cause bore distortion a n d piston b i n d i n g .
(2) L u b r i c a t e new piston seal a n d piston bore w i t h
fresh brake f l u i d .
(3) I n s t a l l new piston seal i n t h e bore (Fig. 14). Po-
sition seal i n one area o f groove a n d gently work, i t
around a n d i n t o groove u n t i l seated. Be sure seal is
not twisted or rolled over.
CALIPER
PISTON SEAL
Fig. 14 Installing Caliper Piston Seal
(4) L u b r ic a te new dust boot w i t h fresh brake f l u i d
and i n s t a l l i t i n caliper (Fig. 15). W o r k boot into the
groove w i t h fingers. Boot w i l l seem larger t h a n
groove diameter a t first b u t w i l l snap i n t o place
w h e n properly positioned.
(5) P l u g f l u i d i n l e t port a n d i n s t a l l bleeder screw.
(6) Coat caliper piston w i t h brake f l u i d .
(7) S t a r t piston i n t o dust boot a n d bore (Fig. 15).
Spread dust boot w i t h fingers. T h e n w o r k piston
t h r o u g h boot and i n t o bore. A i r trapped below piston
w i l l force boot around i t and i n t o groove as piston is
installed.
(8) Remove p l u g f r o m i n l e t p o r t a n d loosen bleeder
screw.
(9) Carefully press piston i n t o bore u n t i l f u l l y bot-
tomed. A p p l y force u n i f o r m l y to avoid cocking piston
(Fig. 15).
CALIPER
PISTON
DUST BOOT
Fig. 15 Installing Caliper Piston
CALIPER INSTALLATION
(1) I n s t a l l brakeshoes i n caliper a n d adapter.
(2) Connect brake hose to brake line on frame
bracket. T i g h t e n hose f i t t i n g t o 13-20 N - m (115-175
in-lbs) torque.
(3) Connect brake hose to caliper. Use new seal
washers w h e n conncting f i t t i n g t o caliper. Do n o t
t i g h t e n hose f i t t i n g a t t h i s t i m e .
(4) Remove brake pedal prop.
(5) Lubricate caliper and adapter slide surfaces
w i t h Mopar h i g h temperature grease, or a n equiva-
lent grease.
(6) I n s t a l l and secure caliper i n adapter.
(7) F i l l master cylinder and bleed brakes.
(8) I n s t a l l wheel and t i r e assemblies and lower ve-
hicle.