REPAIR REAR BRAKE
Removing and installing brake drum
The sequence of operations like that.
A. Raise the appropriate side of the car jack and
Remove the wheel.
Two. Clean the drum of dirt and make sure it rotates freely.
When the drum rotates, or difficulty with wear of its surface
after a significant run of the car with the formation of bead,
preventing the removal of the drum through the pads, you should increase
the gap between the pads and the drum by shifting pistons with
devices to automatically maintain the gap to the axis of the brake
mechanism. For this purpose, a large hole in the drum and
her nose a hole, insert a metal rod 11.8 mm.
Then, any knob (for example, mounting a shovel) drum
based on the wheel studs turn toward the wheel cylinder
(Fig. 186 a) inserted through the rod and the slide shoe
device to the middle of the brake mechanism.
At the rear brake pads rear right hole
employs a toe shoe adjustment cam drive parking
braking system. As a consequence, instead of the rod to the shift of the
pads applied the Allen wrench is mounted on the adjusting nut
eccentric (see Fig. 186, b)
Three. Remove the two screws holding the drum to the flange axis and, after
Light tapping with a hammer flange of the drum, remove drum hands
with a central boss flange and bolts attaching the wheel, shaking his
in the plane perpendicular to the axis.
With difficulty removing the drum screw in the hands of two special
threaded hole flange screws previously inverted drum or other
Longer bolts (with the same thread M8x1, 25). Alternately uniformly
vvertyvaya two screws (bolts), remove the brake
drum and remove the screws (bolts) of its flange.
Notice. If there is severe corrosion at the junction of the drum
flange before removing the drum axis soak it with kerosene and
soak for a while.
To avoid damage to the brake drum and the deformation of the shield (at
difficulty removing the drum) is not allowed to strike with a hammer
the rim of the drum or enter a screwdriver between the shield and the rim of the drum
and use it as a lever.
Inspect the internal working surface (mirror) shot drum
and check the ellipse. The difference of diameters - the maximum and
minimum - should noxtexceed 0.2 mm. In the presence of deep
scratches or elevated ellipsoidal cylinder bore with the basing of
central hole and clamp to adapt the internal
surface of the disc drum.
In order to maintain the necessary rigidity of the drums is not recommended
bore of more than 0.8 mm per side. The surface roughness
mirror drum - the height of the irregularities
profile should be less than 1.6 microns.
Before installing the brake drum of its mating surface,
core holes, bosses, and mating surface of the flange half
thoroughly clean from dirt, rust and dents and a little grease
Grease and moisture resistant high-melting grease.
The brake drum must be worn tightly to lock the flange half
only the force of hands. In this case the connection should not be detected