Disassembly and assembly of wheel brake cylinders
Required to perform these operations, special tools
and appliances: extractor thrust ring and the wheel cylinder
mandrel for mounting on the cylinder.
The sequence of operations like that.
A. Raise the appropriate side of the car jack, put
jack under the jack box, remove the jack and remove the wheel and
the brake drum.
Two. Remove both spring clamp blocks with special tongs
(See Fig. 187), and pushing the pads of their output ends of the slots
supporting rods pistons.
Three. Disconnect the piping from the hydraulic brake mechanism and the
drain the fluid.
4. Remove the two bolts attaching the cylinder to the panel. Remove the wheel
cylinder of the brake mechanism.
Five. Remove the protective rubber boot to the wheel cylinder and a screwdriver
inserted into the groove of the support rod piston, the piston rotate by 90 °
and remove it from the cylinder.
6. Thoroughly rinse the inner cavity of the wheel cylinder fresh
brake fluid or alcohol,
7. Remove the snap ring of the cylinder automatic
device with a special puller (Fig. 188).
Eight. Remove the piston seal rubber cuff.
9. Turn the cylinder valve is venting. Details of the disassembled
brake cylinder wash, inspect and install
their suitability for further work.
Wheel cylinders, the working surface of which is found deep
Longitudinal risks or other defects that lead to leakage of brake
Rasshlifovyvanie their working surfaces are not permitted in connection with
that this leads to loss of tightness in a cylinder circlip
automatic device for maintaining the gap between the pad and
drum and the violation of their performance.
brake cylinders in reverse order, taking into account the following.
I. Before assembly, all parts thoroughly with alcohol or in the fresh
Two. Sleeves, pistons, rings and the inner surface of the cylinder before
assembly grease with castor oil or fresh brake fluid.
Three. Put the plunger sleeve to make it his side with a large
diameter, was addressed by the end of the piston with the groove.
4. Squeeze the ring in the special pliers and insert the mandrel for setting
ring in the cylinder (Fig. 189).
Five. Enter the ring with the mandrel into the cavity of the cylinder with the expectation that
section of the ring plane parallel to the attachment of the cylinder and was
in its upper part. Then, bringing the mandrel to lock her in the shoulder butt
cylinder, press the handle and push the mandrel out of her ring.
Remove the mandrel from the cylinder.
6. Insert the piston into the cylinder all the way to the ring, neatly tucking
edge of the cuff, and rotate it 90 °. Slot reference piston pin
should be parallel with the mating plane of the cylinder.
7. Wear rubber protective cover and screw the valve venting.
In the absence of special tools for assembly of wheel cylinders
after the operation specified in § 4, inserted to lock the pistons
and the rings are pressed on a hand press or light hammer blows
a drift through the wood until it stops the piston from one to another with the same
their distance to the ends of the cylinders.
Slot reference piston rod at the same time should be parallel
mating surface of the cylinder.
To avoid this in the longitudinal scratches on the mirror cylinder
ring before pressing inspect and polish on all Nick
cylindrical surface at the edges and carefully clean the ring and
cylinder from the smallest grains. After installing and securing the cylinders in
inhibitory mechanism of the wheel assembly pads with springs and installation
place of the brake drum, remove the air from the system and make
free rotation of the drum when pedal is released.