oil SKODA 105S 1980 Owner's Manual

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The
clutch moster
cylinder is port
of the
ossembly of the broke moster cylinder ond
pedols. For the odiustment of the pedol
free
trovel, etc. see Chopter 12.1.
Pipeline ond Hoses
The rigid port
of the pipeline
comprises
speciol steel pipes,
the some os those of the
broke system. However, they hove o diometer
of 6 mm os compored with the 5
mm diometer
pipes of the broke system. For
their servicing,
repoirs, ond replocement see Chopter 9.7.
The flexlble port
of the clutch hydroulic
line comprises o high-pressure broke hose.
No
speciol position
or fostening ore recommended.
I N
Il'
I
til
lt
h .t*
: i'*
;::
..:tn
., i oilfl
Fig.3.612
-
Clutch Moster Cylinder
1 Sectionol
View
72

r
t
i
5. Prc
scri bed
rods onc
4th spee
fork rod,
irr the b
6. lnsl
guide bu
cover inr heods. S
tob wos
edges of
F it thr
stri ki ng
weoker s
ing forks 7. Tigl
the forks fork rod
the strik
function
Reverse-:
Fig
-1 - Rever
2-1st-o
3-3rd- o
4 -
Rever
8. Inst
press-f ittr
verse-spe
inside th
through t
Turn tl'
end foces
lock it in
hole. Tigl
Pinion Ar
9. Instc
ing ond,
r
_-_-- -
. i\:r,,,
\. 43
Fig. A.1l'l -
Power Pock
1 -
engine with mounting, 2 -
georbox/f inol
drive with
mounting, 3 -
reor oxle (holf-oxles),
4 -
rodius orms
retighten it using the recommended torque
(Chopter 1.8) ond screw down the clinch nut.
lf necessory, top up engine oil, f ill the cooling
system witlr on qntifreeze,
bleed the broke sys-
tem, ond
odiust the hond broke.
For the fosten-
ing of broke hoses (routing)
see Chopter 9.7.
4.2 ASSEMBLING
GEARBOX
Generolly, the reossembly
p'rocedure
depends
on the extent, to wlrich the unit hos been token
oport. For betterunderstonding,
we sholl des-
cribe the procedure
ond peculieorities
of reos-
sembly of o completely
disossembled unit.
Gear Chonge Mechonism
. 1.
Clomp the right-hond holf of the housing
(when viewed from the flonge securing
it to
the engine) in the MP 9-101 stond
com-
plemented with the MP 3-101 georbox
rock, ond
check the housing for completeness.
2. Instoll
circlips on the striking fork rods
of
the reverse
ond 1st ond 2nd speed. The ring
with the lower
nose is to be fitted
on the 1st--
ond 2nd-speed rods.
3. lnsert the reverse speed
striking fork rod
into the housing
so thot the inserted
end pro-
trudes slightly from its guide,
slip on it the
striking fork with the longer
side of its heod
first,- ond push
the striking fork rod through
the fork
ond the end of the guide
os for os=it
will go. 4. Fit tlre
MP 3-109 jig
into the free holes for
striking fork rods (both pins
of the
iig), ond
proceeding through the hole in its side ond
using o stick or o length of wire, push
the lock
pin into the housing
os for os it will go.
Proceed
in the some monner for
inserting the next pin
(use one pirr
of the
iig). Shift
it
iust so thot
the centre lrole remoins free for inserting
the
striking rod.
Puslr the lock pin
into the end
guide of the strikirrg
fork rods olso os for os it
will go. The
iig is not required
for
the instol-
lqtion of this pin.
Fig.4.2l1- Clomping Georbox Housing in Stond
Using MP 3-101 Rock
Fig.4.212 -
Locking Striking Fork Rods in
Position bv Meons of Lock
Pins ond Bolls
78 Fig.4.2l3
-
Instolling Lock Pins Using
MP 3-109 Jig

Proceed
in the some woy with the
3rd- ond
4th-speed geors.
lf the morked position
of the neutrol is not
midwoy between the side morks (check
visu-
olly), remove the pinion,
mork the positions
of
the striking forks on
their rods (preferobly
on
either side), slocken the forks ond 'rnove
them
toword the required centre by
the distonce of
the deviotion of the neutrol morking. Then lock
the striking forks in position
with screws.
For the striking fork tightening torgue see
Chopter 1.8. 13. Adiust the reverse geor position
so thot
there is o gop
of obout 2
mm between its teeth
ond the odioining teeth, ond swing the striking
fork of the first ond second speed
to moke sure
thot it connot foul
the teeth.
14. Reinstoll the pinion
with its respective
woshers ond lock it in position.
Shift the strik-
ing fork rods to moke sure thot, for exomple,
o movement opposite to the required one of the
striking forks did not toke ploce,
i. e. thot the
neutrol is midwoy betvr'een the engogement
positions of the synchronizing clutches. Correct
ony error ond remove
ogoin the pinion.
Fitting Drive Geors ond Clutch Shqft
15. lnstoll the ossembled drive shoft into the
housing ond slip the splined bush on it.
Top home the seol ring with its seoling lip
pointing outwords into the guide
of the clutch
thrrowout sleeve, ond smeor it with oil. Then
threod the clutch shoft through the ring to
instoll it into the splined bush ond put
it into
the housing together with the guide provided
with o cooting of seoling compound on its cyl-
indricol bedding surfoce. Secure both the shoft
ond the sleeve with circlips.
lnstoll the sleeve guide
with its droin hole
level with the porting plone
of the housing ond
focing the pinion.
For the speciol seoling compound see the
note in Chopter 10.1.
16. Put the pinion
with geors
into the housing
ond oil oll synchronizing rings. Fit the MP 5-104
iig for
setting the crown wheel bocklosh into
the bore of the differentiol beoning ond the
fitted cover, fit the ossembled differentiol in it,
ond close the housing with the other housing
holf ofter hoving cooted the seoling surfoces
with o seoling compound.
Fit o rubber ring in the recess of the boss
beside the stud
bolt ond put
o spring wosher
under the nut. Tighten the remoining nuts
without ony woshers (the
stress of the bolts
ofter the tightening of the nuts provides
for'
their suff icient securing). Tighten the nuts
moderotely for the time being.
For the speciol seoling
compound refer to the
note in Chooter 10.'1. 17.
Proceeding through
the bore of the differ-
entiol beoring in the upper holf of the housing,
fit another
iig, the MP
5-104,
on to the differen-
tiol with flonges clomped so os to fit
into the
topered roller beoring cover, locote the cover
pocking, ond fosten
the cover by meons
of three
nuts. lf the clomping or drowing close of the
flonges of this jig
proves inodequote, it is
necessory to drow close the flonges olso of
the
first, previously
inserted
iig.
18. Drive the guide
of the clutch throwout
sleeve into the housing using the MP 3-103 drift,
top home the drive shoft, ond insert
two od-
iusting woshers under the collor of the
pinion
shoft boll beoring on both holves of the housing
ofter hoving determined their thickness by
meosuring. Using o wire needle
inserted into
the holes of
the tobs of the woshers orronge the woshers so
thot they do not overlop the porting plone
of
the housing,
then instoll the cover ond spring
woshers, ond tighten the nuts (seeChopter
1.8).
19. Fosten the housing by tightening the nuts
(see Chopter 1.8) ond lock in position
the guide
of the clutch throwout sleeve with the respect-
ive clip using the spring wosher under the
clip
nuts.
4.3 ASSEMBLING
FINAL DRIVE
Ref itting Differentiol 20. Turn the housing into the horizontol pos-
ition. Rotote the ends of the knurled hondles
of the inserted iigs MP 5-104
to move the re-
instolled differentiol (see previous porogrophs
16 ond 17) until the crown wheel withdrows
Fig. 4.311- Adiusting
1 -
MP 5-104 iig,
3 -
MP 5-106
iig,Bevel
Geor Bocklosh
2 -
MP 5-101
iig,
4 -
Screwdriver from
the
Determir
swivellin
To rotr
iig with
tiol stor
21. Ins
on the b,
rotote th
the diol
ible to th
Retoin
ogoinst 1
cover. Tl'
teeth chc
losh on t
of the ho
wheel sic
fied volut
the hond
fully its c
( preferob
wheel). I
opened f1
respectivr
of the
iigr
Now tl"
iusted on
flonges o'
topered r
This situc
trot i o n.
Fig. a3fi
for tc
1
22. Rem
side (turn
withdrow
dimension hos to be
roller beori
Measuring 23. Unscr
the toperer
locote it o
q,
ry
80

4.3-4.4
F
I
t
F
i
!
I
r
{.3-4.4
6. Remo
b) Crownwl Tools:
Settin
not le
1. Install
one of the
Glave Cylir
that the p
pendicular
2. Lock
between tl"
cover. 3. Using
back and
clearance I
teeth. This gauge, anc
wheel(see legible the
O.18mm bi
4. lnsuffi
wheel is tc
increase tl
from the nc
the equiva
This will p
increase th
Excess c
thickness
Selector Si
To worl
shims to n
(a) Bac
(b) Act
Refitting C Assembly
29. Instc
ond the rel it with nutr
-looded brc
To
(a) O.3i
(b) o.2r
lf
the shims
connot be set up exoctly to the
colculoted thickness, determine o thickness
which would result
in o prelood
due to on
overoll increose of 0.03 to 0.07 mnr of the di-
rnension of the shims.
27. Ploce the topered roller beoring on the
respective bore, bolt the other MP 5-107
iig on
the housing ond rotote
the centre bolt to press
the beoring into the housing os for os it will go.
Remove the iig, fit the shrunk-on
ring on the
stor pinion,
and lock the ring in position
using
o circlip. Lubricote the beoring with oil, f it the
respective shims on the beoring ond the gosket
on the cover, ond bolt down the cover.
Turn over the housing ond press-in
the other
beoring in the some monner (the press-fitting
iig is olreody in
position),
instoll the preporred
shims, ond bolt down the cover with its gosket.
28. Meosure how deep is tlre drive shoft
beoring below the level of tlre housing
surfoce
ond compensote the difference
with shims up
to o moximum protrrrsion
of 0. I mm -F0.05
rnnr.
Fig.4.3/4 -
Press-f itting of Differentiol Toperecl
Rollr:r Beorings
Using MP 5-107 Jig
Shims 0.1 nrm to 0.2 mm thick ore ovoiloble.
Fit the gosket
ond the ossembled cover on the
housing ond fosten it with nuts ond spring
woshers (for the cover refer
to Chopter 4.5).
Swing down the beoring
with the speedo-
meter drive geors
in the cover into engoge-
nrerrt with the pinion
drive geor
ond lock the
beoring in position
by tightening the nut of the
beoring clip.
Adjusting crownwheel Bearing
Alternative Method a) Crown Wheel Bearing Preload.
Tools Dial Test Gauge and Stand
MPs -
1OG lever Setting:
Preload O.Ob -
O.10 mm
1. Before assembling Transmission casing
remove outer crown wheel bearing races. Leave
the bearings on the
differential housing.
2. Assemble transmission. DO NOT carry out
operation 17
above.
3. Fit the outer races into casing pressing
into
place using coned cover. Do not forget to fit
gaskets. On the Selector Shaft side (side
B) of the
casing fit
approximately O.60 mm of shims
between the coned cover and outer races. Ensure
there is
backlash between crownwheel and
pinion, increase the
shim thickness if required.
4. Fit Dial test gauge
so that pointer
rests on
the differential as shown in fig. 4.3/1A.
5. Lift Crownwheel assembly to determine
clearance between bearings (a).
. . lf this exceeds
O.2O mm decrease the clearance to between O.O1
and 0.20 mm by f itting
shims to Non-selector side
of casing. (b)
. . . When the clearance is between
0.01 and0.20 mm take
a reading. Addtothis0.OS
to 0.10 mm. Make a shim pack
to this thickness
and fit to non-selector side (side
A) of transmission
casing. Check some
backlash still exists between
the Crownwheel and pinion.
Example 1st Dial reading 0.3O mm
0.20 mm
Shim fitted
on non-selector side.
2nd Dial reading 0.07mm
Shim pack
required between
0.07 +O.O5 =O.12mm
and0.O7mm *O.1Omm
= 0.17 mm
Shim sizes available.
0.08, O.14, O.2O and O.SOmm
Shim size selected O.14mm. This
will give
O.07mm preload
tension to crownwheel
beari ngs.
The Crownwheel should now
turn freely with
little drag. Fis.
4.3/1A
82

Remove the clip of
the
clutch throwout beor-
ing guide,
insert the MP 3-102
iig into
the guide,
open its iows, ond withdrow the
guide.
After
hcving renewed the seol ring, drive home the
guide using the MP 3-103 drift. The droin hole
in the guide
must foce
downword.
The lotest desing of the extrocting
iig hos
the type dcsiqnotion MP 3-112. Screw the
iig
bolt into
the
iig nut
inserted into the mech-
onism through the hole cleored by the removol
of the clutch releose cylinder. Jerk the
iig to
drive the guide
out of the housing.
Dismontling the Power Pock
For complete dismontling of the power pock,
remove it from the cor -
see Chopter 4.-1,
"Rernovol of Power Pock from the Cor". Then
proceed os follows:
1. Remove the front cover ond the cover of
the pinion boll beoring, the clutch releose
mechonism, ond the clip of the guide
of the
clutch throwout sleeve, i. e., oll component
ports ottoched
to both holves of the housing.
2. Remove the connecting bolts of the flon-
ges. Force oport the f longes using o screwdriverr
inserted into the chombers of the flonge feet
(lugs). Lifting owoy oll component ports
one
by one is the usuol procedure
of dismontling.
Toking oport of lorger units (pinion,
etc.) is
described individuolly
in the following
chopters.
3. Press out the beoring cups which hove
remoined in the housing ofter its holves hove
been seporoted.
Use the MP 5-107
iig supported
by the MP 5-108
iig.
Fig.4.al2 -
Pressing Out the Cup of the Topered
Roller Beoring
Using MP 5-107 ond MP 5-108
Jigs
4.5 FRONT COVER
The front cover ossembly forms
o self-con-
toined unit fitted to the georbox.
For both the
reossembly ond dismontling ploce
it on o work
bench. Assembling
Front Cover
1. Slip the rubber seol ring on the speedo-
meter beoring ossembly (beoring
with geors)
ond push
corefully the beoring, preferobly
by
o steody rotory motion, into the cover
iust for
enough to be oble to instoll the key
without
domoging the seol ring by the shorp edge of
the keywoy. For the some reoson, chomfer the edge of the
beoring bore before
instolling the beoring in
o new cover.
2. Lock the beoring in the oxiol direction by
instolling the key
ond spring woshers, ond by
screwing down the nut.
Slip the clip on
the
protruding pcrt of the beoring ond lock it olso
in the oxiol direction with o bolt, spring
wosher,
ond nut. Do not
tighten the nuts fully.
3. Instoll the oiled geor
chonge lever in the
cover while pushing
it only os for os the groove
for the seol
ring.With the lever in this position,
insent the seol ring
in its groove
ond push
forther the lever through the ring. Slip the
dust
boot on the lever ond ottoch it to the cover
with o length
of locking wire.
4. Attoch the fostening (mounting)
lugs using
copscrews ond spring woshers. There
is o right-
-hond ond o left-hond lug, ond their slots must
be turned owov from the cover.
FK 1t't4
Fig.4.5l1- Front
Cove'r Assembly
Dismontling Front Cover
Lift owoy the speedometer
beoring ofter
hoving removed the sleeve
clomping bolt ond
the key (held
down by the nut). Then
withdrow
the geor
chonge lever by simply pulling
it out.
4.6 PINION WITH GEARS The pinion
with geors
forms o self-contoined
unit to be instolled in the georbox.
Use o work
bench ond o press
fon both its ossembly onddismor
wheel sure t
Only c
wheel
m itted
drive.
4.8.
Whe
olso tl
o new
one is
Assem 1.P
the pi
the or" thrust
toworc
3-104 p
ground
the be, must t
meosul
2.S
collor I
ring ir
the grr
The rir
3.5 to I
th ickes
ond pu
speed
3.H
it the '
selecte
toword
dismor (by tol
itinp
free to
Clon
MP 3.1
Note
inner b
toining
either r
-speed
ports.
4. Tr
groovir
pinion.
friction
groover
groove!
5. On
ond fit
the nex sizes 3
84

1-
in the
other groove.
Chose the ring olso with
regord to toleronces cvoiloble
in one closs of
the rings os mentioned in the previous
Pqro-
groph. Check the cleoronce of the geor with
the oid of o diol indicotor.
Then remove the geor
including the friction
ring in the second groove
of the shoft.
7. Ploce the lock of the 1st' ond 2nd'speed
synchron izing clutch on the bench with
its
teeth downword. lnstoll
springs in the clutch
core securing them with greose
ogoinst folling
out ond insert the clutclr core with the shorter
side of the inner heod on
top in the respective
geor. Locote bclls (dio. 1ir
in.) on the springs, com-
p,ress the springs with
the fingers or using
o suitoble rod, cnd fit
the complete core
itrto
the geor.
8. Hoving thus osembled the synchronizing
clutch lock, instoll the synchronizing ring
fronr
the opposite side of the geor.
Now threod the
lock on the oiled shoft
with the geor focing
owoy from the shoft.
9. Instoll in position the
previously selected
friction ring with its groove
focing owoy from
the shoft (toword
the geor)
ond insert the
synchronizing ring into the fitted lock of the
synchronizing clutch. Slip the oiled geor ond Fig.4.6la
-
Assembling 1st' ond 2nd-speed
Synchronizing Clutch -
lnstolling the Core
ond Pnessing in the Bolls
the previously
selected friction ring on
the
oiled shoft. 10. Slip on the 3rd -
speed geor
ond secure it
with on
orbitrorily chosen ring from the ronge
of friction rings in complionce with the poro-
groph 2. Meosure the oxiol cleoronce ond odiust
it to 0.1*0.07 mm by o repeoted exchonge of
the friction ring. Now remove the geor,
lubricote it,
slip it on
the oiled shoft ond lock it in position with the
ring with the oil groove
focing the geor.
11. Proceeding occording to porogroph 2,
insert on orbitrory friction ring into the lost
groove, slip on the 4th-speed geor
ond tighten
the pinion
nut over o pilot
collor replocing the
beoring (for
exomple of dimensions dio.
25.5/38x26 with edges of the inner
bore chom-
fered to 1x45o). Mork the side of
the pilot
col-
lor which will be
turned toword the
nut so thot
the side focing the geor
connot be domoged by
impression. Adiust the cleoronce of the geor
to 0.1+0.07 mm by o repeoted trying
on (ex-
chonge) of the friction rings. Then remove the
geor ond the ring from the shoft.
12. Assemble the 3rd- ond 4th-speed synchon-
izing clutch using the some method os when
hoving ossembled thot of the 1st ond 2nd
speed. lnsert the synchronizing ring
into the
clutch ond slip the clutch on the oiled shoft
with the short side of the lock first.
13. Instoll the selected friction
ring in the
locking position
into the groove with its
oil
groove focing owoy from the shoft. Push or top
home the key into the spline of the shoft so
thot it posses
through oll friction rings ond its
end is ot leost flush with the splined shoft end.
Fig.
4.6/3 -
Locking 1st-speed Geor in Position
(turning the ring with o drift) with the Pinion
Clompecl in MP 3-105 or MP 3111 Jig
86 Fig.
4.(

^l;
eil
ell
€; \l-
I
4.9-4.
r
O
Fig. I
((
,'.ffi
l|i
3. To evoluote
the doto
obtoined from
the diol
indicotor reoding ond the
doto of the geor
set,
odopt the following procedure:
The setting distonce of the gouge -
60.00 mm
- is morked on the gouge
orm; the reoding
of
the diol indicotor
hos shown
o deviotion
of e. g.
plus 66 divisions, i. e. 0.66 millimetres (plus
meons thot the tip
of the gouge is pushed
in-
word from the set zero position
ond the in-
dicotor reoding is higher;
o reverse deviotion -
minus reoding -
connot procticolly
occur). By
subtrocting this deviotion from the meosure on
the gouge, the octuol distonce between the
pinion ground foce ond the geor
cross oxis will
be obtoined,
i. e. 60.00 mm minus 0.66 mm :
59.34 mm.
The meosure on the crown
wheel indicoting
the ossembly
distonce of the pinion
is, foi
exomple, 59.60. Accordingly,
the pinion
must be
moved slightly
out of the housing
0.26 mm, i.
e.,
by the difference
of the two
meosurings (59.60
minus 59.34:0.26 mm).
4. Prepore
odiusting
sirims 0.30 mm thick to
be inserted
under the flonge
of the pinion
beor-
ing on further
ossembly of the housing.
Shims 0.14, O.2, 0.3, ond 0.5 mm thick ore
ovoiloble. lf the required
occurote outword shift-
ing of the pinion
connot be ochieved
with shims
of ony of the specif
ied thickness, combine them
to obtoin
the next higher
volue.
Note: The thickness of shims required
for the od-
iustment of the
pinion
con be olso
colculoted
in the following
woy:
o) Set the diol indicotor
of the Mp 5-103 gouge
os in porogroph
1of the preceding
texi i.6.,
with the gouge
odiusted on the meosuring
contoct, the reoding
of the diol indicoto-r
will be 1.00 mm.
b) .Swing the
tip of the diol
indicotor
ogoinst
the pinion ground foce ond push
the
iinion
by meons
of the Mp 5-102
beorinq
retoiner
into the housing
till the diol
indicitor reods
1.00 mm. pointer
ofter pushing
the pinion
into the
housing is the meosure (thickness)
of the
shims.
4.9 DIFFERENTIAL
Assembly 1. Instoll the sun geor (plonet)
without the
friction wosher, the two stor pinions
(sotellites),
ond the pilot pin
for the stor pinions
into the
left-hond holf of the differentiol cose (with
the
flonge for the crown wheel). The originol
dif-
ferentiol pinion
shoft pressed into the cose
must be reploced tempororily by the pilot
pin
to focilitote hondling. 2. Push the sun geor
from outside into
en-
gogement with the stor pinion
teeth ond
use
o depth gouge
to meosure the dimension by
which it protrudes
from the housing. Then, pro-
ceeding from inside, push
the sun geor
into the
obutment surfoce of the differentiol cose ond
meosure ogoin
by how
much lt protrudes
from
the housing. The difference of both meosure-
ments determines the gop
for the sliding ring.
The rings ore supplied
in thlcknesses of 1.8,
1.9,
2, 2.1,2.2, ond 2.3
mm. Select the ring whlch is
0.1 mm thinner thon
the colculoted dimension
of the gop.
Fig. 4.9/1- Sectionol View of Differentiol
The orrow points to the mork indicoting the
side for pressing-on
the differentiol pinion
shoft. Any symbol con be used (o
figure, o let-
ter) but it must be identicol for both ports
of
the differentiol. lt olso indicotes the
correct
relotive position of the two differentiol ports.
c)
d) Push,
the pin-ion further into the housing
{while w.otching
the deflection
of the poin-.
ter) until the ossembly
meosuring
is ob-
toined (the 59.60 meosure
on th; crown
wheel) , i.
e., by the dif ference
of this
meosuring from 60.00
mm -
in our exomple
60.00 minus 59.60:0.40
mm.
Without chonging the position
of the
diol
Indicotor, push
the pinion into the housing
gs for os
it
will go -
the difference
of th6
d.iol reoding
from the previous
0.40 mm is
the thickness
of the required
shims (0.26
mm). Or, without chonging
the position
of
the diol indicotor on tfrJ pinion,
trin tf,e
scole to zero (0).
The
deilection
of the
90 Fig-

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