Dnepr MT10-36 - Braking System Operation

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BRAJ<ES

The

brakes

of

the

'front

a

nd

rear

wheels

are

provided

with

mecha-

nical

drive

and

have

the

following

similar

components

:

shoes

in

as

-

sembly,

springs,

a

nd

tappets.

Front

Brake

T

he

two

-

oam

brake

is

pr.ovided

with

two

active

shoes.

It

differs

fro

m

the

previous

models

b

oth

in

design

and

higher

efficiency.

The

design

of

the

brake

is

illustrated

in

Fig.

27.

Brake

shoes

1

rest

with

their

spherical

nests

against

the

heads

of

ta

ppets

5,

a

nd

wit

h

their

pressu

r

~

e

pads,

against

cams

3

fitte

d

in

disk

4.

Driving

and

driven

disks

7 a

nd

8

respectively

are

tooth

connected

to

the

cams.

The

levers

are

located

on

the

face

side

of

the

brake

disk.

The

levers

are

interc

.

onnected

by

rod 2

adjustable

in

length.

The

driv

ing

leve

r

is

connected

with

the

brake

lev,

er

on

the

mo-

torcycle

handlebar

by

means

of a

rope.

When

the

hand

lever

is

being

depressed

the

rope

actuates

the

driving

lev

·

er

and

both

levers

simul-

tane

o

usly

turn

the

cams

whic

h m

akes

the

shoes

to

go

apart

and

press

to

the

brake

drum

of

the

wheel.

Acted

by

two

springs

6

the

shoes

r

eturn

to

the

initial

position.

Special

devices

serve

to

co

mp

.e

nsate

the

wear

of

the

brake

shoes

.

I

nitially

the

com

pensation

of

wear

is

perfonmed l

by

tightening

the

rope

sheath

which

is

done

by

tu

rning

out

adjusting

union

11.

Fur

-

ther

on,

when

the

adjustment

!by

means

of

the

union

be

comes

impos-

sible

it

is

required

to

fully

unscrew

the

union,

remove

both

levers

(driving

and

driven

ones)

from

the

cams

and

fit t

he

former

into

a

new

position

having

turned

them

t

hr

o

ugh

10

° countercltOckwise

(by

one

tooth)

with

respect

to

the

cams.

This

done,

a

djust

the

brakes

by

turning

out

the

union.

When

in

the

process

of

operation

and

further

wear

of

the

li

nings

the

length

of

the

union

becomes

insufficient

for

adjustment,

it

is

required

to di-

sasse

mble

the

brake

and

rotate

t

he

cams

through

1

80°

around

their

axis

.

Now

,

due

to

the

asymmetry

of

the

cam

with

respect

to

its

pin

axis

the

brake

shoes

occu

py

the

position

at

which

the

diame

trical

wear

tOf

the

linings

is

compe

ns

ated

by

3

mm.

If

the

wear

is

less

than

abov

·

ementioned

the

turning

of

the

cam

is

.pr.

emature

and

it

can

result

in

that

th

e

shoes

in

the

assemble

d

bra-

ke

will

f

ail

to

enter

the

wheel

brak

e

drum.

There

may

be

some

cases

when

the

turning

of

the

cam

through

180°

ca

n

be

possible

without

preliminary

rearrangemen~

of

the

!e-

Yers.

The

additional

compensation

of l

ining

wear,

if

required,

may

be

per.formed

by

putting

ad

j

usting

washers

of si

mil

a·r

thickness

between

61

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