Dodge RAM TRUCK 1500 1995 Service Manual page 242

5 - 70 DRUM BRAKES - BR
The wheel cylinder connecting links can be cleaned
up with a wire brush if rusty or corroded. However,
be sure the link notches are in good condition and
will seat properly in the brakeshoes.
CUPS
BLEED
SCREW
WHEEL
CYLINDER
PISTON
CUP
BOOT
PISTON
COMPRESSION
SPRING AND
EXPANDERS
J9405-6
Fig. 12 Wheel Cylinder Components (All)
Wheel Cylinder Assembly
(1) Install bleed screw in cylinder. Finger tighten
cylinder only at this time.
(2) Coat cylinder bore, pistons and piston cups
with liberal quantity of fresh, clean brake fluid.
(3) Cylinder components can be installed two ways.
Either as an assembly (Fig. 13), or individually. Pro­
cedures are as follows:
(a) To install as assembly, assemble pistons, new
cups and expander spring as shown (Fig. 13). Start
one piston and cup into bore. Then slide expander
and remaining cup and piston into bore in one mo­
tion.
(b) To install parts individually, install first pis­
ton cup in bore. Be sure open end of cup faces bore
interior and flat side of cup faces piston. Install
first piston in bore and seat it against piston cup.
Then insert expander spring and remaining piston
cup and piston.
(4) Start piston dust boots in each end of cylinder
bore by hand. Then seat boots in cylinder with a
bench vise (Fig. 14). Press boots into place until flush
with ends of cylinder.
(5) Apply light coat of silicone grease, or multi-pur­
pose grease to wheel cylinder links. Then insert links
into dust boots and seat them against pistons.
WHEEL CYLINDER INSTALLATION (ALL)
(1) Clean support plate and lubricate shoe contact
pads with multi-mileage or silicone grease (Fig. 3).
(2) Apply thin coat of Mopar silicone sealer to
wheel cylinder mounting surface of support plate
(Fig. 15). Sealer prevents road splash from entering
brake drum past cylinder.
(3) Start brakeline in cylinder inlet by hand. Do
not tighten fitting at this time.
PISTONS
J9405-69
Fig. 13 Assembling Wheel Cylinder Pistons, Cups
And Expander
VISE
BOOT
J9405-67
Fig. 14 Seating Wheel Cylinder Dust Boots
CYLINDER
MOUNTING
SURFACE
SUPPORT
PLATE
J9405-70
Fig. 15 Wheel Cylinder Mounting Surface (On
Support Plate)
(4) Mount wheel cylinder on support plate and in­
stall cylinder attaching screws. Tighten screws to 20
N-m (15 ft. lbs.) torque.
(5) Tighten brakeline fitting to 13 N-m (115 in.
lbs.) torque.
(6) Install brakeshoe components.
(7) Adjust brakeshoes to drum using brake gauge.
(8) Install brake drum.