Dnepr MT10-36 - Main Drive Disassembly and Assembly

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joint

is

coupled to

the

main

drive

by

means

of a toothed

joint

and

wedge

bolt.

Provided

at

the

rear

end

of the

propeller

shaft

are

several

annu-

lar

grooves

to

accommodate

a

locking

ring.

The

latter

is

used to

set

the

length

of

the

propeller

shaft

and

the

total

c

learance

between

elastic

coupli

ng

31

(Fig.

21)

and

th

e e

lastic

-cou

pling

disks.

The

clearance,

with

the

propeller

shaft

in

a

horizontal

position,

must

be

within

3

to

6 mm.

The

servicing

of

the

·cardan

drive

is confined to

lubrication

of

the

uniYersal

joint

bearings,

using

a

pressure

lubricator

screvved

into

the'

universal

joint

cross,

at

the

intervals

specified in

the

Section

"Te-

chnical

Servicing".

In

order

to

lubricate

the

universal

joint

, t

ake

down

the

,rear

wheel,

shift

sealing

rubber

ring

28

to the

middle

of

the

propeller

shait,

and,

by

means

of a

wrench,

sc

rew off

the

universal

joint

ca-

sing

27.

When

unscrewing,

remember

that

the

casing

has

a left-

hand

thread

and,

therefore,

must

be

turned

clockwise.

The

main

dri

ve

is

essentially

a

pair

of

bevel

gears

·

with

circular

teeth.

These

gears

are

arranged

in

the

casing

which is

also

used

as

a disk for

the

rear

brak

e,

as

an

oil

reservoir

and

support

for the

right

-h

and

end

of

the

rear

wheel axle.

At

the

bottom,

the

casing

has

an

oil

drain

hole

closed

with

a

plug.

At

the

top,

there

is

a

filling

hole

into

which a dips

tick

with a

breather

is

screwed.

Avoid

dismantling

the

main

drive

unless

it is

necessary

to do so.

If

the

dismantling

has

been

ca

rried

out

for

same

reasons,

it

is

s

~

tron

gly

recommended

to use,

during

assembling,

the

same

adjusting

washers

9

and

20

as

th

ose

fitted

at

the

Manufacturing

plant.

After

tightening

up

all

the

nuts,

the

gears,

when

rotated

by

hand,

must

turn

freel

y,

without

jerks

and

seizing

. The

backlash

between

the

teeth

of

the

gears

should be

easily

fe

lt

with

the

h

and,

whe

n swin-

ging

the

dr.iving

spind

l·

e,

with

the

hub

of driv·

en

gear

18

being

locked.

The

backlash

between

the

teeth

of

the

gears

must

range

from 0.1

to

0.3 mm.

The

dipstick

head

is

fitted

with

a

breather

which

is

similar in

design

to

that

of

the

gear

box.

To

keep the

mai

n

drive

is

good

order,

regularly

check

the

oil le-

vel

and

cha

nge

the oil in due time,

at

intervals

specified

in

the Se-

dion

"T

,echnical

Servicing".

During

operation

periodically check

the

proper

tight

ening

of

the

nuts

securing

the

main

drive cover

and

the

nuts

securing

the

m

ain

drive

to

the

rear

suspension

lever.

Dismantling

and

Assembling

the

Main

Drive

In

order

to

dismantle

the

main

drive, remove

the

sealing

gland

cover

(unscrew

seven

screws)

and

the

gland

itself. After

that,

take

·

d0\\"11

the casing cover which is secu.red with five

nuts

and

on~

screw.

4.

8004

49

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