light SKODA 105S 1980 User Guide

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t
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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

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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-

5.
rl in
t-o o
el
st
th
w
ce
re
q
tr
t
Fig.
5.1i3 -
Forcing Slroft out of Beoring Using
MP 5-113 Jigs ond Jirrs os per
Fig. 5."1/1
The oxle shoft moy Inove out of the holf-oxle
only to such on extent thot the reor edge of the
beoring thrust ring is flush
with the holf-oxle
socket. Otherrwise it is opt to
foll out of the
epicyclic geor
ond its refitting would require
the removol
of the holf-oxle from
the georbox
housing. 4. To fit o new boll beoring proceed
occording
to Chopte'r 5.2.
Pull out ogoin
the shoft slightly
until the thrust ring con be seen, fit the beoring
I I
I of the
broke mechonism
odhering to the in-
structions of the obove-mentioned chopter,
lo'
cote the beoring
shim 0.3 mm thick, ond com'
plete the ossembly.
Note: The 3 mm shim should
be used only
when replocing the wheel hub or when elimirr-
oting on oscertoined shoft ploy,
thot is
to soy
if the shoft moves oxiolly ond
knocks. However,
it is recommended never
to use more shims
thon three.
5. A domoged seoling
ring con be removed
with o hook or o needle, ond o new one driven
or pressed-on.
The lotter olternotive should be
preferred with regord to the visuol checking of
the pressing-on operotion. The
tightening fin
ond spring of the pocking
hove to be
tunned in-
side the holf-oxle.
When driving home the seol
ring, slip the
MP 5-114 pilot toper (see
Fig.5.213) on the
shoft,
smeor it with oil, ond move the seoling
ring
olong it to drive it finolly into the holf-oxle
using tlre MP 5-116 drift os shown in Fig-
5-212.
For pressing-on
the seoling ring, use the MP
5-112 iig (see
Fig. 5.214)
ond the, sleeve
with
toper os per
Fig.5.-1l4. Pull the shoft
slightly out
of'the holf-oxle, slip
on it the oiled toper os
shown in the illustrotion, then the
seoling ring
ond finolly the sleeve. Fosten the MP 5-112
iig
screwing its heod on
the holf-oxle threod, slip-
the seoling ring on
the thrust ring
by meons of
the sleeve, ond turn the wrench to
press
the
seoling ring into the holf-oxle.
Now the beoring con
be pressed ott.
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Fig. 5.1i4 -
Sleeve ond Toper for Pressing'on
Holft-Axle Seoling Ring (toper
surfoce
smoothed out during monufocture)
12
90
6"44 t;)
20 96

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b)
Alil 1.
con
sloc
seo'
int
Fig.5.2l5
-
Pressing Boll Beoring
on Shoft
Using MP 5-112 Jig ond
lts Liner (smoller)
Fig.5.216 -
Connection of
Holf-oxles
with Rodius Arms
lorger ond one smoller, ond the forked plote),
screw down the
iig on the threod
of the shoft,
ond use
nuts to ottoch it
to the holf-oxle socketf
longe. The
iig of
the lotest design permits
its
simple fostening by engogement with
the holf-
oxle flonge (fit
the
iig ond
rotote
it to lock it
in position).
Instoll the lorger liner between the boll
beor-
irrg ond the
iig heod, ond
press
the boll
beorirrg
on the shoft by turning the iig wrench.
3. Reploce the lorger liner with the smoller
one (rest it ogoinst the
iig bolt heod), ond turn
the wrench in the opposite direction to press
the beoring into the holf-oxle socket.
Fitting Broke Mechonism ond Wheel Hub
4. Instoll the broke bocking plote
complete
with the broke
mechonism on the holf-oxle
socket, slip on the "O"
seoling ring ond the
cop with the seoling ring (with
the tightening
f in focing toword the holf-oxle), ond fosten
oll
the porrts
with bolts, spring woshers, ond
nuts.
The seoling ring should be driven or pressed
into the cop so thot the tightening lip foces the
beoring ond
iust so thot there
remoins
o gop
of
1 to 2 mm between the pocking
ond the cop
f longe.
5. lnsert the key in
the shoftwith its bevelled
end into the runout of the keywoy, smeor
the
hub neck with oil so
thot it does not
drog in
the seoling ring, ond fit the hub with the broke
drum in position.
Moke sure thot the key did
not move further olong the shoft (its
lifted end
in the keywoy would couse the hub to burst)
ond tighten
lightly the nut. Since o high
torque
is required
for finol tightening of the nut, put
off the tightening ond locking of the nut till
ofter instollotion in the cor. Then
tighten the
nut with full torque (see
Chopter 1.8),
top on
the hub to relieve
the possive
stress of the
toper, retighten to the specified torque, ond
lock the nut with o cotter pin.
Fitting Rodius Arms
6. Instoll
the spocer into the rodius
orm, fit
the knurled
woshers (with
the knurling toword
the orm)
to either side of the ellipticol holes of
the rodius
orm, ond fosten them with bolts ond
nuts not
forgetting the spring woshers. Do not
tighten the connection fully. Threod
the bolts
through the bolt holes so thot their nuts foce
into the cor ofter fitting the rodius orm to the
holf-oxle.
Fit the rodius
arm on the protruding
holf-oxle
pin ond threod
the bolt through the hole
of the
secrt. Slip
spocing tubes on the bolt ond pin
together with sheet shims with rubber liners
ond fosten
lightly (without tightening)
the
rodius orm to the holf-oxle using nuts
ond lock
woshers. Tighten
fully the connection
ofter fit-
ting the ossembly
in the cor when odiusting
the
reor wheel
olignment (geometry).
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Fig
Dis S
boll
6-1C
rubl
ovo
exomple
50,000 km ond
more, check the wheel
comber ond prepore
suitoble woshers for its
correction. 2. Jock up the cor ond support the body on
both sides to relieve the front wheels, ond
remove the wheels. 3. Proceeding from
inside the luggoge boot,
remove covers protecting
the threods of the
shock-obsorber piston
rods ond screw off the
nuts. Retoin the piston
rod by holding its flot-
tened end.
b) Operotions inside the cor
4. Remove the steering wheel, the steering
column cowling, ond detoch the steering
shoft
from the body -
see Chopter 7.8.
c) Operotions from under the cor
5. Remove the bolt of the connection of the
steering shoftwith the steering box ond releose
the shoft sleeve from the connection by pull-
ing the steering geor
inside the cor.
6. Slocken the nuts of the bottom wishbone
pins fostening the front oxle to the brocket on
the body until the woshers of the brockets ore
releosed. 7. Detoch the onti-roll bor brockets from
the
body ond disconnect the rubber broke hoses
from the front broke systems.
Before discon-
necting the hose, cleon thoroughly the hose
connector ond its surroundings to prevent
foreign motter from getting
into the broke
system. For the some reoson,
wrop the
hose
ends in o cleon rog. Toke
the some precoutions
with the disconnected broke piping.
8. Ploce o roll-o-cor
iock under the oxle ond
remove the bolts (two
on either side
of the tele-
scopic shock obsorber) fostening the oxle to
the body from obove. 9. Compress the telescopic shock obsorbers,
lower the
iock, ond
move it with the oxle from
under the cor.
6.3 REFITTING FRONT AXLE IN
CAR
1. To reinstoll the oxle in
the cor, reverse the
procedure of its removol, i.
e., begin with the
porogroph 9 ond proceed
to the porogroph
1.
Coot the rubber
cup with greose
ot the point
of its contoct with the steering shoft.
2. While reconnecting the broke hoses, ob-
serve the utmost cleonliness ond bleed the front
wheel brokes if no other ports
of the broke
system hos been dismontled. (lf
such o dis-
montling hos token ploce,
bleed the brokes of
oll wheels ofter hoving fully reclosed
the broke
circuit). 3. Turn the wheels in the stroight oheod di-
rection before connecting the steering shoft
with the steering box. Fit the steering wheel tentotively
ond odiust the direction indicotor
switch -
see Chopter 13.17.
4. Using the steering wheel, tunn the wheels
into full lock positions
to moke sure thot the
lock ongle is correctly limited by the king pin
socket stops -
see Chopter 6.5, porogroph
36.
5. Adiust the toe-in -
see Chopter 6.1.
6.4 DISMANTLING
FRONT AXLE
No speciol instructions ore required for
dis-
montling mony of the subossemblies. Accord-
ingly, only the bosic dismontling procedure
will be
deolth with ond porticulors
will be men-
tioned only os fon
os they ore necessory for the
sequence of operotions ond the use of iigs.
Ports which con be dismontled witlrout re-
moving them from the cor ore the wheel hubs
and beorings, the broke mechonisms, steering
orms, shock obsorbers, ond the
onti-roll bor.
lf ony odditionol ports
hove to be dismontled,
remove the oxle from the cor ond dismontle it
on the stond.
Dismontling Wheel Hubs
ond Beorings
1. Dismontle the broke mechonism os per
Chopter 9.1 ond remove
the wheel hub
cop
using the MP 6-124 drog. When using the MP
6-136 pull-off
cortridge, the hub cop hos to be
prised off with o
tyre lever or o similor tool.
Now remove the costelloted nutwith its wosher
ond pull
out the hub,
ossisting the removol
with
light blows of o mollet, if necessory.
2. Toke out the inner port
of the outer beor-
ing, then the seoling ring, ond, f
inolly, the inner
port of the reor beoring (cone
with topered
rollers). Prise out the seoling ring using o
scrrewdriver. Proceed corefully olong the ring
circumference to ovoid distorting the ring which
Fig. 6.4/1 -
Removing Hub Cop Using
MP 6-124 Drog
106

Fig.
Hol
over t
remo!
6.5 F
The
which
provid
$H
Remove the csstelloted
nut ond wosher from
the steering orm, screw down the MP 6-105
cotridge on the threod of the orm, ond drive out
the orm.
Removing Steering Knuckles,
Springs,
ond Wishbone
Suspension
1. Remove tlre shock obsorber ond fit the
MP 6-106 spring
instoller in its ploce from obove.
lnstoll o horseshoe wosher on the sphericol end
of the instoller tie-rod possing
tlrrough the
coil
spring ond the bottom wishbone, ond compress
portly the spring (for
fitting the instoller see
Fig. 6.5/4).
2. Screw off the
costellqted nuts of the upper
wishbone pin
ond the bolt of the lower wish-
bone suspension, ond drive out the wishbone
Fig. 6.415 -
Pressing Out Pins of Steering Bcrll
Joints Using MP 6-138
Drog
Fig.6.416 -
Driving Out Steering Arm Using
MP 6-105 Cortridge pin.
lf driving out is impossible, use the MP
6-107 drrog (remover).
Rotote slightly the
flonges of the drog to
breok it up in two ports,
fit it os o yoke
over
the upper wishbone,
clomp it in position
by
rototing its heod, ond screw in the centre bolt
to press
out the wishbone pin.
3. Drive out the bolt of the lower wishbone
suspension ond remove the steering knuckle
from the lower wishbone.
4. Screw off the nut of
the king pin
ond pull
off the king pin
socket using the MP 6'111 drog.
Refer to the following chopters for
further
dismontling of the steering knuckle, the king
pin ond its socket, ond their repoirs.
Hoving removed the spring instoller,lift owoy
the spring ond remove
the wishbones.
5. When removing the upper wishbone, mork
the thickness of the open (horseshoe) woshers
irrserted between the brocket ond oxle body on
tlre individuol brockets. The
woshers ore 3
mm
onct 1 mm thick so thot if there ore, for exomple,
one 3 mm ond two 1
mm woshe'rs, mork the
thickness of 5 mm on the brocket. Also toke
into occount the likely necessity of o correction
of the wosher thickness -
see Chopter 6.2, poro-
groph 1. When reinstolling the upPer wishbone, fit
wo;hers of the morked down thickness to sim'
plify the cdjustnrent of the wheel comber.
Fig.6.4l7 -
Pressing Out Upper Wishbone Pin
Using MP 6-'107 Drog
6. Remove the nuts of the wishbone pin,
clomp the eye of the wishbone ond brocket in
o vice (see
Fig.6.5/3) ond use o screwdriver to
push the circlip out of the groove
to the nor'
rowed down port
of the pin.
Sllp the pin out of
the other eye of the wishbone ond push
out olso
the other circlip.
108

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Fig.6.5/5
-
Pressing-in Beoring Cups Using
MP 6-130 Jig
Fig.6.5/5 -
Instolling Seoling Ring
Using
MP 6-131 Jig 23-
Fit the disk broke bock plote
on the
steering knuckle ond fosten it by bolting down
the broke brocket. Use spring woshers to lock
the bolts. Drive home the wheel hub
on the
steering knuckle with light tops ond use o tube
to top home the beoring cone.
24. Fit the greose-pocked
cone of the outer
beoring on the steering knuckie, locote
the
shim on the beoring, ond tighten the nut with
o torque of 1.5 kpnr (15
Nm) while rototing the
wheel hub.
25. Top
the wheel hub ond the broke disk
with o mollet ond rotote
the wheel hub to bed
in the beorings. Bock off the nut
through obout
-180o
ond retighten it with o torque of obout 5 Nm
(0.5 kpm) while rototing the hub. Then bock off
the nut to the neorest cotter pin
slot (ot
the
most through 30"), ond lock it in this position
by inserting the cotter pin.
26. Check whether the wheel hub rototes
freely br-rt without ony noticeoble
cleoronce in
the beorings, ond secure the nut with the cotter
pin.
Fittirrg Steering Knuckles ond Wheel Hub
into Wishbones
27. Hoving thus ossembled the wheel, instoll
ii into the lower
wishbone, fit
o shim between
tl-re wishbone reor eye ond the resilient bush in
the king pin socket,
threod in the eccentric pin,
cind screw down the nut without tightening it.
28. Press
the wheel ogoinst tlre
upper wish-
borre ond connect it with it
by topping home
the wishbone pin
from the reor side
of the
oxle,
i. e., from the side of the shorter port
of the
king pin
socket. Slip the MP 6-108 pilot
pin
on
the wishbone pin
threod to focilitote threoding
of the pin
through the hole in the wishbone.
Tighten slightly the connection with the costel-
loted nut.
DK ? 2r+
Fig. 6.517 -
MP 6--108 Pilot Pin for
Upper
Wishbone Pin lnstollotion
112

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5. Ploce
the steering
box with its bottom
boll
beoring resting on the MP 7-102 jig
ond press
the steering screw
with both beorings into the
iig. Extroct the
bottom beoring using
the MP
6-111 king pin
socket remover
ond push
the
steening screw with the top beoring oert of the
steering box. Support the beoring by the Mp
7-102 iig crnd
press
it out.
7.3 REASSEMBLING STEERING BOX
1. Press the dust cup with its seoling
ring
into the steering
box with the pressed-in
bush
ofter hoving thorouchly
cleorred the box. Now
pf oce the box on the MP 7-102
iig oncl
press-in
the bottom boll beorinct
using tlrei pressing
mandrel MP 7-103.
2. Fit the lower beoring
cop seoled
off with
o poper
gcsket
ond seoling compound, slip
lpring woshers
on to the bolts,
ond tighten the
bolts with o torque os per
Chopter t.6. f it the
wosher on the steering screw
with its deflec-
tion focing
the screw threod ond press
the
top beoring on the screw
using the Mp Z-103
pressing mondrel.
3. Then ploce
ogoin the steering box on the
MP7-102 iig ond
press
into it ond into the bot-
tom beoring the steering
screw with the pnessed-
-on top boll beoring,
using ogoin
the Mp7-103
pressing mondrel. For further ossembly, use the
vice ond the dummy brocket.
Fig. 7.311 -
Pressing-in Bottom
Beoring
on MP 7-102
Jig (support
plote)
Using
MP 7-103 Piressinq
Mondrel 4.
Meosure the height of the beoring pro-
truding from the steering box ond odiust it by
fitting shims interspoced with poper goskets
cooted with o seoling
compound.
Fosten down
the cop by tightening the bolts. Check the
steering screw for free rototion
ond the obsence
of ploy.
The beoring should be without o cleor-
once or there hos
to be o prestress
of up to
0.07 mm.
5. Remove the bolts of the cop, slip the rub-
ber seoling ring dipped in oil on to the shoft,
ond fit the dust cup on the cop. lnstoll spring
woshers on the bolts. Should the cup be over-
stroined due to the toleronce
of the recess for
the seoling ring or the ring itself
, instoll
o poper
gosket under it os under tlre ccrp.
6. Locote the steering nut on the screw fol-
lowecl by the rocker shoft with pin, spring,
spring pin, ond the licl gosket
cooted with
o seoling compound, ond fit the lid with bush
in position to close the steering
box. Instoll
spring woshers under the bolts orrd tighten the
bolts with o torque os per
Chopter 1.8. Screw
the set screw into the lid ond rnove
the steer-
ing geor
so thot the drop orrn is swivelled
through obout one holf of its trovel from the one
or the other extreme lock position.
Witlr the
drop ornr in this position,
screw down the set
screw os for os it will go
ond then bock it off
through obout 95 to '120'.
This will provide
for
on odequote cleoronce of the steering geor.
[.ock the set screw in position
with the re-
spective nut.
7. Drive the key on to the rocker shoft cone,
fit the drop orm ond hold it down lightly with
the nut. Clomp the drop orm in o vice, tighten
fully the nut (for
the tightening torque see
Chopter 1.8), ond secure tlre nut with o cotter
pi n.
8. Clomp ogoin the steering box by meons of
the dummy brocket ond moke sure
thot the dnop
orm con swivel from one extreme lock position
to the other. A certoin
resistonce should olwoys
be present,
but if the resistonce is too greot,
decreose it by o slight slockening of the set
screw in the lid. The
rototing resistonce of the
shaft should not exceed 20 Nm (O.2
kpm). Refer to
page 117/118 for testing
procedure.
9. Set the ossembled steering box in its fit-
ting position
(inclined
by obout 40o) ond pour
in oil through the hole in the bbx lid (cover)
till the oil level reoches the bottom edge of the
filling hole. Then
screw down the topered plug.
7.4 RELAY (TDLER)
LEVER
For its instollotion (ond
removing in reverse
order) ond ony pertinent porticulors
see the
Chopter 6.5, porogrophs
2 ond 3.
122

7
.7-1.8
(
t
t
t
; (
(
b
tl
ir
tl
p il
o
tl
p
odiust,
if necessory, the driving dog of the di-
rection indicotor switch -
see Chopter 13.17.
Refit the steering wheel so thot its spokes
ore horizontol, lock it in position
with the nut
(for tightening torque, see
Chopter 1.8), ond
bolt down the spoke shroud.
7.8 STEERING WHEEL SHAFT AND SHAFT
BEARING
The steering wheel (column) shoft is built
up
of two ports
with the beoring in the uPPer port.
Usuolly, it is not necessory to disconnect the
two ports
of the shoft or to remove the beoring
ond steering lock. lt
con be removed from the
cor os o unit.
Removol 1. Remove the steering wheel -
see Chop-
ter 7.7. 2. Remove the screws on the lower port
of
the shoft cowling ond pull
the cowling off.After
removing two bolts, detoch the cluster switch
on the shoft from the upper port
of the shoft
cowling. 3. Remove two front screws of the upper
Port
of the cowling ond remove the cowling.
4. Disconnect the leods
from the switches
ond the switch box.
5. From under the cor, remove the bolt of the
coupling connecting the steering
column shoft
to the steering box ond detoch the dust boot
from the floor. Remove the
bolts of the shoft
beoring (from
under the shoft)
ond the bolts of
the steering lock (from
the front) fostening the
shoft to the body, ond pull
out the shoft.
Ref itting To ref it the steering column shoft
in the cor,
reverse the removing procedure. While reinstol-
ling the steering wheel (Chopter
7.7), do not
forget to check the direction indicotor switch
for correct function.
Use ploin
ond spring woshers under the bolts
of the steering lock
brocket. Reinstoll the shoft
beoring using spocing tubes, rubber bushes, ond
ploin woshers, ond secure the bolt of
the coup-
ling, connecting the steering
column shoft with
the steering box, with
o self-locking nut (for
tightening torque, see
Chopter 1.8).
To Disconnect Shofts
Remove the bolt
of the cross-pin
ioint con-
nection.
Connecting of Shofts
Fit o fostening sleeve on the tube
with the
shoft, dip the ring in oil ond slip
it on to the shoft end with
its wedge-shoped port
toword
the beoring, instoll the spring
ond the
ioint
socket of
the shoft bottom port.
Tighten
the
connection with the bolt with self-locking
nut
(tightening torque os per
Chopter 1.8).
The sleeve must be f irst built up if
the shoft
is refitted for the first time. Locote
both holves
of the sleeve on the tube ond fosten
them
lightly together by bending the tob of one holf
of ttre sleeve over the
other. The
sleeve must
on no occount clomp the tube tightly.
Bottom Port of Steering
Column Shoft
The shoft is provided
with cross-pin
ioints
ond connot be dismontled (token
oport). Before
fitting the shoft dust boot, smeor
it with
oil to
focilitote its slipping over the pcrrts
of the joint.
For this purpose,
it is clso odvisoble to wrop
the joint
in o plostic
foil or to moke o sleeve
with o pilot
cone.
Top Port of Steering Column
Shoft -
Beoring
Removol 1. l-ift owoy the fostening sleeve
ond check
whether the shoft rototes
freely in the tube. lf
it is not the cose, unlock the steering lock ond
press out the shoft proceedirrg
from the side
of its splined
end.
2. lf necessory, remove
the circlip of the shoft
ond lift owoy the beoring. The other beoring
hos to be driven out by topping it corefully
through the cut-outs in
the tube to ovoid domog-
ing it. 3. Remove the brocket with the steering
lock
- see Chopter 7.9.
Ref itting
1. Slip tlre beoring pocked
with greose
on to
the upper port
of the shoft, then the ring with
its wedge-shoped port
focing the beoring, ond
lock both ports
in position
with the circlip.
Press the shoft into the tube ond press-in
the
beoring (ogoin pocked
with greose)
from the
other end.
2. lnstoll the brocket with the steering lock -
see Chopter 7.9.
Shoft Beorings They hove to be thoroughly lubricoted
first,
since ofter their reossembly with the shoft od-
ditionol lubricotion is not possible.
lf there is
ony doubt concerning the greose
pocking,
re-
move the circlip f
rom the inner port
of the
beoring, toke the beoring oport, cleon it, ond
reossemble it ofter hoving pocked
it with the
recommended greose,
i. e., brond NH2 of Cze-
choslovok provenience
or one of the bronds
specif ied in Chopter 7.5, porogroph
3.
124

r 0.3-t0,5
Ihe permissible
out-of-bolonce must not ex-
ceed 50 grommes
on the rim rodius. Every new
tyre is provided
with o coloured dot on its side,
indicoting its lightest point.
Fit the tyre olwoys
with this dot focing
the tube volve.
ln this
position, the volve octs os on odditionol weight
compensoting the wheel overoll unbolonce to
o consideroble extent.
lf dynomic boloncing of the wheel is not
possible, bolonce the wheel stoticolly with the
greotest possible qssuroc|.
Boloncing weights
of 30, 50, 75,
ond 100 grommes
ore ovoiloble.
10.4 TUBED TYRES
For mounting,
dismounting,
ond repoirs of
conventionol tyres with inner tubes (for
por-
ticulors, see the preceding
Chopters), the usuol
procedures ore opplicoble. The permissible run-
out (untrue
running)
of the rim is the some os
for tubeless tyres (Chopter
10.5).
10.5 TUBELESS TYRES
The oir-tight seoling of these tyres requires
more core ond o different hondling thon thot of
the tyres with inner
tubes.
Preporotlon of Rirrr
13elore mounting the tyre, inspect the rim for
ony technicol defects. The points
to be checked
ore the rim shoulder ond the moting foce for
the tyre beods,
in oddition to the overoll con-
dition of the rim. lf ony defects ore found, the
rim must be reconditioned.
A sotisfoctory rim
nrust comply with the following conditions:
o) The
rim shoulder ond the tyre volve hole
must not be distorted;
there must be no
shcrp edges or protrusions
likely to domoge
the tyre beod. Minor unevennesses
con be
hornmered flot ond smoothed
with o file.
The moximum eccentric running
of the rim
side must not exceed 1.5 mm.
b) The moting surfoces
must be obsolutely
cleon (free
from stuck-on rubber, rust,
etc.).
Cleon them with emery poper
or o wire brush
ond coot them with point.
lnstolling of Tyre
Volve
Cleon the rim with o dry rog. Push
the rubber
volve into
the hole in the rim
or pull
it in
by
its threod using, for exomple,
o lever
os illus-
troted in Fig. 10.5/1. Fig. 10.5/1
-
Pulling Tyre Volve
irrto Wheel Rim
Mounting the Tyre
For mounting the tyre, use speciol mochines
ond procedures,
depending on the type of the
nrochine. lf such o mochine is not ovoiloble, in-
stoll the tyre using speciol tyre levers.
Ensure
thot the boloncing dot is next to the volve.
Tyre leverrs for fitting tubeless tyres
differ in
shope from conventionol levers. They
ore thin-
ner, without edges, ond polished.
Use them core-
fully in order not to domoge the
beod seoling
rubber bose. Insert the levers
under the beod
ot
short distonces ond refroin from using force. To
focilitote sliding of the tyre cosing beods over
the rim shoulder, moisten them with woter ond
top them with o rubber
mollet when eosing
them over the rim shoulder. Inflote
the mounted
tyre immediotely. Check the tyre for propei'
bedding in the rim ond
squore seoting
on it.
Holding the wheel perpendiculorly,
strike it
severol times ogoinst the f loor ot severol points
to force the tyre beods
to bed
correctly on the
bcad seots.
lnf lotion
Remove the volve
core to increose
the diom-
eter of the hole for oir inlet (oir
should be
iniected in quick
shots to force
the beods
on
to the beod seots) ond inflote the tyre. Use
o compressor with oir receiver, the
compressed-
.oir line of the
workshop, or
compressed-oirr
cylinders. The relief volves hove to be odiusted
to o pressure
of 350 kPo (3.5
kg/cmz).
Never ollow the inflotion pressure
to rise
unnecessorily. As soon os the tyre hos snopped
into position
on the rim
ond is free from leoks,
odiust the pressure
to 250 -
350 kPo (2.5 -
3.5
kg/cmz). lf the tyre refuses to
bed properly
on
the rim,
for exomple due to distorted beods or
beods compressed due to incorrect storoge,
press the tyre circumference inword to open
wide the beods which will then bed properly
on the rim. Use either o length of
rope or
o speciol tightener. Slip the rope over the
tyre
circumference with o certoin cleoronce, insert
o stick
between the tyre ond the rope, ond
twist the rope.
Adiust the tyre pressure
to specif
icotions ond
submerge the wheel in woter to check the
tyre
for oir leoks.
146