oil SKODA 105S 1980 Repair Manual

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t'91

tificotion
number, or in
words. For exomple
Mobiloil 30 is on oil in the SAE 30 viscosity
closs, Mobiloil Speciol belongs to the SAE
10 W/30 closs. We quote
the viscosity closs
symbol of oils identified
in this woy in brockets
following the oil brond (trode
nome).
Oils designoted by o doubled viscosity closs
symbol ore the so-colled multigrode oils. Their
complionce with viscosity clossificotion is ex-
pressed by the symbol before the froction line
progressively to the clossificotion expressed by
the symbol behind the froction line. Thus,
for
instonce, the SAE 10W/30 oil hos the properties
of the sAE 10w, sAE 20w120,
ond sAE 30
closs.
Czechoslovok oils
Motor oil M6 AD (SAE
30), M4AD (SAE
20W/
20), Mogul Super SAE 20W50,
Mogul Speciol
SAE 2OW/30
Modit Oil SAE 30 (M6
AD), Modit Oil SAE
2OWl2O (M4AD), Modit Oil Speciol
SAE 10W/
30, Modit Super SAE 10W/40
Foreign oils
Agip: Agip F. 1 Motor Oil HD SAE 10W/20,
2OWl30, 4Ol5O; Agip F. 1
Super Motoroil
10w/40,20wl50
BP: Energol HD SAE 40, 30, 2OW (2OW|?O),
10W; Super Visco-Stotic 10Wi30, 10W/40,
20wt20
Costrof : Costrol 40,
30, 20Wl2O, '10
W; Costrolite
(SAE 10W/30), XL (SAE 20W/50);
GTX
(SAE 10w/50)
Mobil: Mobiloil 40, 30, 2OWl2O,
10W; Speciol
(SAE 10W/30); Speciol 20W/50; Super (SAE
10w/so)
Shef l; X-100 40, 30, 2OWl20,
10W; Super (SAE
10w/so)
Other oils of foreign moke con be used if equi-
volent to the listed bronds, for
exomple, Avio,
Esso, Heno (Optimol
LD), INA (Delto TLX),
Noftogos (Golox GTX, Omnio) etc.
GEAR OILS -
type E. P. (high-pressure)
I Viscosity j Ambient
Lubricoting noint
I closs
! temperoture
sAE 140*) -r50
to +15 oC
Georbox/f inol
drive SAE
90
*35 to -15
oC
* 5 to -30oC
SAE 80
teering box SAE 90 throughout
the yeor Czechoslovok
oils
PP 90 (SAE
90) geor
oil; PP 80 (SAE 80)
geor oil
Foreign oils
Agip: F. 1 Rotro 140; 85/90; 75Wl8O
BP: Geor Oil 140
EP; 90 EP; 80 EP
Costrol: Hypoy B 140; B 90; B 80
Mobil: Mobilube GX 140; GX 90; GX 80
Shell: Spirox E. P. 140; E. P. 90; E. P. 80 W
Other geor
oils of foreign moke con be used
if equivolent to the listed oils.
SPECIAL OILS
Distributor beorings (service inspection)
Czechoslovok moke -
ON 1 low'pour-point oil
Foreign moke -
for exomple, Shell Clovus 17
ond similor oils
GREASES -
use throughout the yeor
Woter pump
Czechoslovok moke -
SP 4 sooP greose,
NH 2
or A4 motor greose
Front wheel beorings, geor lever
brocket
Czechoslovok moke -
SP 4 or NH 2 soop greose
King pins
Czechoslovok moke -
A 00 motor greose
Inner door mechonisms, locking mechonisms
Czechoslovok moke -
SP 2-3 soop greose*)
Clutch releose beoring
Czechoslovok moke -
SP 4 or NH 2 soop
greose* )
Steering tinkoge boll
ioints, cronkshoft
beoring
Greoses listed in the porogroph
on greoses
of
foreign moke
Greoses of foreign moke:
Agip: F.1 Greose 30; BP: Energreose L2; Costrol:
Costroleose l. M.; INA: Automost Speciol;
Mobil: Mobilgreose MP;
Shell: Retimox A,
ond other greoses
equivolent to
the listed
ones.
BRAKE FLUID
To SAE J 1703C Specificotion
ln Czechoslovokio -
SYNTOL HD 190 broke fluid
Abrood -
SYNTOL HD 190, Pentosin
Super Fluid,
Mobil Hydroulic Broke Fluid, ATE Blou, BP
Broke Fluid, STOP SP 19
r) Greoses of foreign moke should be preferred.
220
*)
Not used
in Czechoslovokio

I-
.'t Fig.
15.3/3 -
Oil Filter
oil f ilter bowl
witlr f ilter
element
centre-boll oil pressure
switclr pressure
oir. When driving often
on dusty roods,
ihe cleoning intervols
should
be shortened by
holf. For oir cleoner mointenonce in tropicol
re'
gions refer to
ChoPter 16.2.
Air Cleoner -
winter oPerotion
Remove the rubber
cop from
the cover exten-
sion orm ond
use it to stop the mouth of
the
orm. Fit o guide extension into
the cleored hole
in the ornr ond
insert the
corrugoted poper hose
(included in the
cor equipment) into
the
ex-
iension ond
the holder on the
intoke ond
ex-
houst monifold.
Give the
hose the required shope by
bending
it slowly ond corefully. Above
oll, ploce
it into
the holcier so thot
there is
o suff icient distonce
(wide enough to
insert o
finger) between it
crnd the exhot-tst monifold.
Tightening of
cYlinder heod bolts
The cylinder heod
bolts should be tightened
in the running-in period before
the gosket gets
settled ond then
ofter every replocement of the
gosket, i.e., ofter
obout 1,000
kilometres' For
itre tightening procedure,
s9e
Chopter
-2'16'
Check'ilg of vilve
cleoronce ofter
every tighten'
ing of tlie
cylinder heod
is o
routine procedure
which must not be omitted.
Volve Cleoronce
For checking procedures
ond odiusting volues,
refer to ChoPter 2.13.
Alternotor V'belt
Tensioning
Loosen the
nuts of the bolts
in the olternotor
f longe (fostening
it to
the engine ond
the strut)
ond'of itre
bottJ holding down
the strut on
the
olternotor, ond
swing
oside (tip)
the olternotor'
Adiust the
belt so
thot it gives
woy 10- to
15 mm midwoy between the
belt pulleys
when
depressed lightly (ot
if o- weight of obout
2 kg were opplieal with
the
finger ot this point'
LoCk the
olternotor in
this position
by tighten-
ing properlY
oll the nuts.
Belt dimensions: 9x9.5x1,0O0 mm.
To Cleon the
Distributor
The contoct breoker points, the
cover, ond
the rotor orm
of the distributor must never
be
greosy or dirty. Scrope off
ony burns on the
distributor cover.
lf you hove
cleoned the
distributor with
oetrol, do
not ref it the cover till ofter
the petrol
hos comPletelY evoPoroted.
222
oll
the greose
into the beorings. Tighten
the
cop thoioughly so
thot it connot be worked
loose by vibrotion.
Air Cleoner -
cleoning ond
replocing of
filter
element
Unclosp the cover
fostening clips
and lift
owoy the lid. Depress the
cross broce in
the
1ock6t, rotote
it
slightly to disengoge it, ond
withdrow the filter
element. Wipe
cleon the
inside of the
iocket, cleon
the filter
element or
reploce it with o new
one, ond reclose the oir
cleoner proceeding
in reverse order.
Shoke ond
top the filtet element to
rid it of
clirt porticles, oncl
blow it off ond through with
Fiq.15314
-
Lubricotor of
Woter Pump Beorings

Fig.
15.3/8 -
Distributor Adiusting Elements
1 -
contoct holder, 2 -
rotor orm, 3- com,
4 -
distributor brocket, 5 -
distributor brocket
clomping bolt
Alwoys turn the engine clockwise to eliminote ony ploy
in the distributor drive geor
ond to
ovoid loosening of the bolt. To relieve the
com-
pression resistonce, it
is recommended to bock
off the sporking plugs.
b) Stroboscopic method:
When using this method, the volues of the
bosic ignition timing ond
the odvonce con-
trolled by the centrifugol timing control (for
its
diogrom refer to Chopter 13.5) should be odded
upwhile multiplying bytwo
the odded upvolues
occording to the diogrom. Any effect of the
vocuum control must be
eliminoted by discorr-
necting the respective hose (connecting
the
distributor vocuum unit with the corburettor).
The meosuring procedure
is indicoted by the
diognostic equipment itself.
To Adiust ldling Speed
Use the oir-correction screw (speed
cor-
rection screw). The speed decreoses when ro-
toting the screw clockwise ond increoses when
rototing it onticlockwise.
Adiust the idling speed in occordonce with
the tochometer ond within the limits specified
in the following porogroph "To
Adiust ldle
Run". The engine must be wormed-up
before
storting the odjusting procedure (see
olso the
following porogrophs) ond its ignition must be
in perfect
condition (distributor
contoct-breoker
points, sporking plug
electrodes, ond ignition
odvonce).
N o t e : For the bosic position
of the odiusting
screw refer to Chopter 2.19 - "Mointenonce
ond
Adiusting". Fig.
15.3/9 -
Air-correction Screw -
idling speed
correction screw
To Adiust ldle
Run
Acljust the contoct-breoker point
gop,
the gop
of the sporking plug
electrodes, ond
the ig-
nition odvonce. Then check
the
volve cleoronce
(if there is no cleoronce, odiust
the
volves),
cleon the oir intoke filter
element, ond moke
sure thot the occelerotor pedol link hos
the re'
quired free trovel -
see Chopter 12.2-
Use o needle to remove the plug
covering
the fost-idling screw
ond let the engine run ot
obout 2,000 r. p.
m. to ottoin on oil temperoture
of 70oC. Insert the probe
of the thermonreter
into the hole for the oil diPstick'
Now connect the
speed indicotor (tocho-
meter) ond the onolyzer of
corbon
.monoxide
(contoined in exhoust fumes). Use
the oir'cor-
iection screw (Fig.
15.3/9) to set the
speed
-r-?n
at 800 l;; t.
p. ni. cnd the fost-idling screw
(Fiq. 15.3/10) to odiust the
content of corbon
moioxide to 2*0.50/s or the oir-fuel proportion-
by-weight mixing rotio,
comporoble with
the
specif ied corbon monoxide content, to
1+.2 +$.t.
After about one minute of
the continued idle
running recheck the odiustment ond
correct it,
if necelsory. Close the hole
with the
fost-idling
screw by driving in o
new plug with
its bottom
outword.
Note: For the bosic position of
odiusting
screws refer to Chopter 2.19 - "Mointenonce
ond Adjustment".
To Lubricote Accelerotor Mechonism
Pour severol drops of oil into
the end of the
bowden coble tubing ond lubricote both
ioints
(on top ond below)- of the corburettor pull-rod
itself with obout one drop of oil. Then
depress
224

friction focing. lnodequote
ploy
results irr o too
short free trovel of the clutch pedol
ond on
olmost immediote clutch disengogement. Access
to the releose
cylinder con be goined
os de-
scribed in the previous porogroph
on clutch
lubricotion. Hold the rod protruding from
the
relose cylinder ond force
from it corefully the
releose lever, ogoinst which it is restingi
the
lever con be relieved by disengoging the ten-
sion (pull-off
) springs.
ln service, the forcing-off
must be ot leost
2 mm. Adiust it to 4
to 5 mm by odiusting the
length of the rod. After hoving
loosened the nut
on the rod
of the releose cylinder, rotote
the
releose finger to obtoin the correct rod
length.
Then retighten the nut, thus locking the releose
f inger in its position
on the rod.
lf the ploy
is correctly od justed,
the f ree
trovel of the
clutch pedol
pod should ronge
from 40 to 50 mm. lt should not be ollowed to
drop below '!0
to 15 mm. lf the described od-
justing procedure foils to bring the required
result, it is necessory to odjust the clutch
mech-
onism in occordonce with
informotion con
toined in Chopter 3.2.
Bleeding the Glutch Hydroulic System
The movement of the clutch pedol
is trons-
mitted hydroulicolly to the clutch releose cylin-
der. The couses ond symptoms of penetrotion
of oir into the hydroulic
system (similor
to the
broke hydroulic system) ore described in detoil
in the section deoling with brokes. The pro-
cedure of bleeding the clutch is the some os
wherr bleeding the brokes -
see Chopter 15.8.
Fig. 15.411-
Adiusting Elements of
Clutch
Control Mechonism
I -
releose cylinder rod, 2 -
releose cylinder,
3 -
releose lever, 4 -
bleed screw 15.5 GEARBOX
AND FINAL DRIVE UNIT
Checking Oil
Level ond Topping'up
Oil
Renrove the centre cover ol the
f loor boord in
the luggoge comportment behind the
reor seots.
Pull off the filler neck cop ond use
the dipstick
to check the oil level. With the diPstick inserted
into the neck up to its seoling ring, the oil level
should be obout 8 mm obove the upper line'
For this check, the cor
should be ploced
on
level ground.
After hoving topped up the oil,
woit obout 2 minutes (while
oil flows from the
georbox proper
into the finol drive ond its level
is stobilized), ond then recheck
its level-
Fig. 15.5/1 -
Tronsmission Unit Filler Neck
Fig. 15.512 -
Tronsmission Unit Droin
Plugs
ond Inspection Plug
1 -
georbox droin plug,
2 -
finol drive droin plug,
3 -
inspection plug,
4 -
switch of reversing lcmps
(except SKoDA 105 S)
ffi
;rt'i,*
tiiffi
ii.! i;
br'ill
226

r
5.9-15. r
2
Dismontle the housing, remove
old greose,
cleon the individuol ports,
opply fresh greose,
ond reossemble the housing. Sook the felt rings
on the links (pull-rods)
in engine oil.
15.10 WHEELS AND TYRES, SNOW
CHAINS
Tyre Inflotion, Boloncing
ond lnterchonge
of Wheels
The procedures ore outlined in
Chopters 10.1
through 10.3. Snow
choins ond their use ore
deolt with in Chopter 10.6.
Wheel Toe-in -
see Chopter 16.1.
Shock Absorbers -
see Chopter 8.3 "Shock
Absorbers ".
15.11 ELECTRTCAL EQUTPMENT
Checking electrolyte level ond topping up --
see Chopter 13.2.
Sporking plugs -
electrode gop
odiustment,
etc. -
see Chopter 13.7.
Stqrter motor -
exqminqtion ond renewol of
brushes, etc. -
see Chopters 13.11 through 13.14.
lgnition timing, odiustment of contoct breoker
point gop, distributor lubricotion -
see Chop-
ter 15.3.
15.12 BODYWORK -
UNDERBODY
Woshing ond Mointenonce
The visible ports
of the body qre
f inislred in
o hord synthetic boking vornish, the remoining
ports in synthetic vornish.
The underbody is sproy-cooted
with o plostic
compound -
for detoiled informotion, see Chop-
ter '14.9.
Follow the
usuol procedures
when
woshing, cleoning ond polishing
the cor, ond
observe the specific instructions for
the use of
woshing ond cleoning preporotions,
issued by
their monufocturers.
All lights with the exception
of heodlomps
hove cosings of plostic
moteriols qnd
they
should be cleoned onlywith woteror shompoos.
When hosing down the corr
cover the voltoge
regulotor of the olternotor ond
the ignition coil
to protect
them ogoinst sploshing with woter,
ond do not
sproy woter direct on
the door lock
ond the lid covering the fuel
tonk filler neck.
Woshing ond Core of Underbody
Mechonisms
The underbody mechonisms
ore protected
with o synthetic vornish which stonds
well the
usuol woshing procedures.
Protect oll rubberports
ogoinst direct contoct with speciol chemi-
col solvLnts or limit the durotion of this
contoct
to o minimum before
o complete woshing off of
the solvents with woter (by
hosing down, etc.)'
Keep the oil cooler, if fitted on
the cor, in
cleon'condition. Hose
it down when woshing
the cor, ond if dirt still
sticks to the cooling
surfoces, use some of the detergents.
Bodywork Lubricotion
Routine mointenonce includes the
lubricotion
of door hinges ond limiters, hinges
ond releose
mechonismi of the engine bonnet ond boot lid,
the releose mechonism of
the spore wheel,
ond
the leveroge of windscreen wipers. Lubricotion
of inner dolor mechonisms is
included in
speciol
mqintenonce. Lubricote oll occessible mechcnisms
with
high-quolity greoses which
do not
dry, do not
oxldize, ond protect
the mechonisms ogoinst
corrosion for o long time. Oil is
not suitoble due
to its short-time efJect. Any greose con
be used
to lubricqte the
door limiters ond
the front
seot
slide roils.
Lubricotion of SporeWheel Corrier
Bearings-
Remove the spore wheel,
cleon the hinges, ond
opply oil on iheit
upper sides. In oddition, rub
in greose of ony brond.
Lubricotion of Windscreen Wiper
Leveroge -
Remove the cover of the
ioint (o
plostic cup),
f ill it with greose, lubricote the
ioint, ond
rein-
stoll tlre cover.
The Lubricotion of
Inner Door Mechonisms
is possible only
ofter removing the
door ponel
ond the inner 'door
mechonism. Use
only re-
commended greose brcnds.
Lubricote
the bowden
coble of thJwindow wind-up mechonism
with
Fig.15.1211- Lubricotion
of Windscreen Wiper
Leveroge Joint -
ioint cover
230

the
pipes) The
greoter portion of
the f illing
will 'flow
out through the
outlets ond
this will
suffice in the
event of
droining before dismon'
tling the engine.
3.-Uncouple the
hoses from
the engine line
in the engine boy -
See Fi1.15.131A. Proceeding
from und6r the vehicle, pull
the hoses
behind
the cross beorer of
the georbox,
ond let the
liquid flow
from the hoses.
4. Remove the
droin plug of
the cylinder
block ond, if necessory, free
the out'f low using
o length of wire,
etc.
N ot e : In oll, obout 85 0/0
(10.5 litres) of the
coolont will f low out,
ond the difference should
be reckoned with when
refilling the
system-
All ontifreezes ore
to o certoin extent hormful
to the skin. lt is therefore necessory to
protect
oneself qgoinst
contoct with
the liquid, es-
peciolly the eyes (do not touch them
with Fig.15.13/4
-
Heoter Line on
Engine
ond Droin Plug
1 -
droin plug
2 *
pump ond heoter connecting line
3 -
thermostot ond
heoter connecting lirre
fingers soilded witlr
the liquid). Wosh
ony
stolns off the skin os quickly os possible with
soop woter etc.
Rinse the stoins off
the vor-
nished cor bodY with woter.
Fridex-Spolqno Antifreeze
As clreody mentioned, the cooling system is
f illed with this liquid,
or with o solution
of its
concent'rote with
soft
woter, in the
foctory.
For the preporotion of this solution
olw.oys
use soft ond cleon woter. In the following
toble,
its concentrotion in
dependence on
its freezing
resistonce is indicoted. Alternotively, the
con-
centrotion con be determined from
the density.
Fig.15.1312 -
Cooling System
Bleed Cock
Fig.-15.13/3 -
Fuel Tonk
Droin Guord
Sheet ond
PiPe
Plugs Densit
I ot
+20'
I
i
-- I 1.029
; t.oqs I 1.055 1.O57
1.062
| 1.067
I
i 1.074
i 1.080
I
Volume
Ports
Fridex Spolono
i Woter
21 1
38 1
44 47
I
53 -1,5 ity
ot +20 oCFreezi
ng
point "C
-10 -20
-25
-27
-30
-35
-40 -45
-60
79
2
62 '1,5
56 53 1
47 4I
232

16.1
-
16.2
16.1 EQUTPMENT FOR SUBTROPTCAL
REGIONS
Stondord equipment of
cors for subtropicol
regions where the temperoture
does not exceed
+40oC, or where
increosed
cooling efficiency is
required generolly:
1. Copper rodiotor (copper
lominotions) for
oll types. 2. Oil cooler for oll types,
the some
os thot
fitted in the stondord
12O LS
model.
3. Cost finned
oil sump for oll types includ-
ing occessories (longer
oil pump
suction
stroiner ond longer oil dipstick), like thot fit-
ted in
stondord 120 L ond 120 LS models.
4. Oil temperoture signolling
telethermometer
(125+3'C) in cor type S 120 t-S.
The primory
element is mounted in o speciol connection fit-
ted to the oil cooler outlet. The worning lomp
on the instrument ponel
is red
ond without
o symbol (the
instrument ponel
hos o different
wiring for the connection of the worning lomp
to the terminol boord).
The coble of the primory
element is con-
nected to the terminol "10"
of the terminol
boord "111"
(morking occording to wiring dio-
grom in Fig. 13.1/1).
The
coble is led out ot
the engine together with
cobles to the engine
temperoture gouge
ond the oil pressure
switch.
16.2 EQUTPMENT FOR TROP|CAL
REGTONS
Stondord equipment of cors for tropicol re-
gions where the temperoture does not exceed f
50 oC,
or where on
extro high cooling
ef-
f iciency is required generolly:
1. Copper rodiotor (copper
lominotions) for
oll cor types.
2. Oil cooler for
oll types like thot fitted
in
stondord S 120 LS mod6l. The bolt
connecting
the rodiotor hose of the outlet from the engine
timing geor cover to the rodiotor hos, however,
no by-poss holes.
3. Cost finned
oil sump
for oll cor types -
refer to Chopter 16.1, porogroph
3.
4. Oil temperoture signolling telethermometer
(125+3oC) for types 120 L
ond 120 LS.
For
loyout see Chopter 16.1, porogroph
4.
5. Thermostot with o nominol opening tem-
peroture of +75oC for oll
types.
6- Increosed volume of coolont (storoge)
tonk -
4 litres for oll types.
7. Fr-rel pump
with o longer priming
lever.
It is instolled on the engine on two insuloting
pcrd s
Mointenonce of oir clecner:
The stondord oir cleoner filter element (the
some for oll cor types) must be
chonged in
dust-loden environments ofter every 2,000
kilo-
metres. On dusty roods in deserts, this element
must be inspected doily ond reploced doily, it
necessory.
Keep the coolont level
ot obout the middle
of the tonk or only slightly obove the middle.
The totol
volume is 13 5 litres opproximotely
234