MOTOR TRUCK SERVICE MANUAL
On earlier models of front
c. Proper meshing of the pawl and sleeve
brakes (backing plate mounted) a finger
teeth can be checked at this point. Grease coat
spring type of adjusting bolt lock was
adjusting bolt threads and thread it into the adjusting
sleeve until it bottoms. A clicking sound and a ratcheting
To assemble, first install plunger parts,
feel will indicate meshing of the teeth. Turn the bolt out
press in seal, turn bolt into plunger or
three turns, if there is no clicking sound or ratcheting
adjusting sleeve and then install finger
feel, this indicates proper meshing. Remove adjusting
spring and guide bolt. Lock guide bolt
bolt after check. Tighten hollow capscrew to 15-20 ft.
by peening lock plate to bolt boss and
d. Pack a small amount of grease into
The installation of plungers with single lip seals
underside of seal and seal lips. Assemble the plunger
is the same as for double lip seals except with automatic
seal over the adjusting sleeve in the plunger housing by
adjusters. The single lip seal is installed on the adjusting
pushing the seal over end of adjusting sleeve so the
sleeve first. Grease the sleeve, seal and adjusting
inner lip enters seal groove. Check by lightly pulling up
plunger and install in the plunger housing.
assemble the adjusting pawl, spring and hollow
e. Using the proper tool seat the seal into the
capscrew with gasket. Drive the seal into the housing.
plunger housing as in paragraph "2b"
Screw the adjusting bolt into the sleeve until it bottoms
and perform the check for adjusting pawl tooth mesh.
Then back the bolt out about 1/2 turn.
Coat adjusting bolt threads with grease and
thread it into the sleeve after working it through the seal
flap hole, being careful not to pinch the seal on the
threads. Turn bolt in to just short of the seal. DO NOT
bottom it on the seal.