e. Polish bore of plunger housing (3) with crocus
cloth. If bore has nicks, scratches or corrosion,
If a seal driver is not available, a 1-3/4
in. socket can be used.
e. Seat anchor plunger seal (8) into plunger
1. INSTALL BRAKE SPIDER (3) IF REMOVED.
housing with suitable seal driver tool.
SECURE WITH TWENTY NUTS (16) AND
Install lock plate (14) onto guide screw (15).
Install guide screw into plunger housing. Ensure
2. INSTALL ANCHOR PLUNGER (12).
end of guide screw enters the anchor plunger
key-way slot so that anchor plunger can slide
a. Apply a thin film of grease to a new anchor
freely in housing bore. Torque guide screw to
plunger seal (13).
15-20 ft-lbs (20-27 Nm). Bend tabs on lock plate
to secure nuts.
b. Carefully push double lip seal (13) onto anchor
plunger (12), stretching outer seal lip over
3. INSTALL ADJUSTABLE PLUNGER.
plunger nose end until inner seal lip is
completely in second plunger groove and outer
a. Apply a thin coating of grease to inside and
seal lip is in first plunger groove.
outside surfaces of adjusting plunger (9). Place
adjusting plunger into bore in plunger housing
Coat entire anchor plunger (12) with grease,
aligning key-way slot with guide hole.
packing cavity behind seal.
b. Grease a new seal (8) and threads of adjusting
bolt (10). Carefully install new seal onto bolt.
Grease adjusting actuator (11) and thread it onto
Brake assemblies have one adjusting
plunger and one anchor (solid)
plunger per plunger housing. Anchor
plungers are marked on shoe slot
The adjusting actuator (9) must
end, R for right hand brakes and L for
bottom out on shoulder inside
left hand brakes. DO NOT mix at
adjusting plunger. If bolt is threaded
too far into the adjusting sleeve, bolt
d. Insert anchor plunger (12) and seal (13) into
will bottom out inside adjusting
plunger housing with anchor plunger key-way
plunger and the automatic adjuster
slot aligned with guide screw hole. Ensure
will not function.
anchor plunger goes all the way into plunger
bore and seats at bottom.
Install actuator (11), adjusting bolt (10), and seal
(8) into adjusting plunger (9) already in housing.