1980 SKODA 120L wiring

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Fig. 11.6/1 -
Section Through
Heoter
1- Cover, 2 -
Lower port
of cosing (iocket) -
two-port, 3- Heot exchonger, 4-
Heoter fan,
5 to 8-Control f lop volves, 9-Ponel with control
levers
the bowden tubing of the
bowden cobles ond
let the oil seep down olong
their entire length.
Check the heoter fon for foultless running.
With the switch in position
I, the fon must run
ot higher speed -
for its wiring refer
to Chopter
11.7 -
Electric Control. Fill
the cooling system
with coolont ond bleed the system.
Fit the grips (buttons)
on the levers observ-
ing the symbols on the grips:
left-hond lever -
white orrows upword ond
downword,
centre lever -
orrow downword,
right-hond lever -
red orrow upword, blud orrow
downword.
To open the flow through the lower inlet
socket, turn the lever in this socket so
thot it
coincides with its centre line. The socket
should be closed with
the flop only
when
testing the heoter, etc. Heoter Disossembly
ond Reossembly
o) Heot exchonger, volve,
flops, ond levers
with links.
1. Disconnect the control bowden
cobles
from the levers, remove the gosket
from the
heoter beoring surfoce, loosen the
locks of the
broces, ond lift owoy the broces together
with
the cover ond fon.
2. Unscrew the liquid flow control volve ond
detoch the hose from
the second
inlet of the
heot exchonger ond the bleed hose ofter hoving
removed the hose
clips. Do not detoch
the link
from the volve lever -
it will sove you
odiust'
ment on reossembly.
3. Detoch the link of the flops from the reor
side of the heoter cosing ond unlock the flops
in the cosing by removing lock rings, woshers,
ond levers.
154

1
1
1
1
1
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1:
1:
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ffi{,
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i
fdll
100 -
Storoge botteny
101 -
Switch box
102 -
Alternotor
103 -
Voltoge regulotor
104 -
Storter motor
105 -
lgnition coil
106 -
lgnition coble
107 -
Distributor 115
113
'l7s:,!--,t
ir
rl
tl
tl
t|- -
- --
- - -- - - --- --- -l
116 i
I
I
L--_-___---__ I
Fig. 13.111 -
Wiring Diogrom
108 -
lgnition horness ond sporking plug
interference suppressing resistors
109 -
Fuses
'110 - Instrument ponel
111 -
Instrrument ponel
terminol boord
1 -
High-beom worning lomp, 2 -
Lubri-
cotion worning lomp, 3 -
Telethermometer,
4 Alternotor (chorging)
worning lomp,
169

TYPE: S
105/120,12O LS, 12O GLS
Electrical Equipment 198O model
WIRING DIAGRAM
Diagram 13,1/'l A170

junction
with the olternoto,r occording to
Chop-
ier 13.3 ond mointoining
o constont voltoge of
tlre power
supply set within the
entire ronge
of
service speeds.
Tlre voltoge regulotor
is instolled orr the body
cross beorer, to
the right of the engine ond
beside the ignition coil.
To focilitote hondling
of its leods' especiolly
the occess to their
connections, it
is recom-
rrrended to remove the regulotor fostening
screws. For disconnecting procedures,
see
Chopter 13.3 "Alternotor
lnstollotion ond Gen-
erol lnstructions".
DK 1565
Fig.13.411- Internol
Wiring Diogrom of
Alternotol with
Voltoge Regulotor ond
Outer
Connections
Altenrotor: B, R, M -
olternotor outlets
f -
olternotor phose
windings
m -
olternotor field winding
D1,2,3, 4, 5, 6 -
moin diodes
D7, 8,9 -
olternotor ouxiliory diodes
D10 -
olternotor choking diode
Voltoge regulotor:
R, M, 15/54 -
regulotor outlets
reg -
regulotor tension winding
Rk -
boloncing resistor
Ro -
protective resistor
Rr -
odiustoble resistor
Kr -
regulotor contocts
Outer connections: K -
worning lomp (1.5
W)
S -
switch (switch
box)
B -
bottery
Checking Voltoge Regulotor
on Cor
The regulotor operotion con be offected by
loosened connections ond on imperfect eorth- ing.
lf the wsrning lomp does not go
o.ut when
driving, i. e., if it glows
ot increosed engine
speed brightly or dimly,
or if it does not stort
glowing ofter stopping
the engine ond
o new
iurning of the ignition key in
the switch box,
the voitoge regulotor
is probobly
foulty. Another
symptom of o regulotor
foilure is
o poor
chorg-
irrg of tlre bottery or its
overchorging.. lf there
is nothing wrong with the regulotor, check the
reguloted voltoge over the regulotor which
slrould reod 13.2 volts ot the
minimum ond 14.8
volts ot the moximunr. This check
in the
cor
is only tentotive ond only
o check on
the test
bench'con be considered os definite ond
bind'
i ng.
Electricol Adiustment
The voltoge regulotot- should be tested
ond
odjusted only on o test bench
in o connection
slrown in Fig. 13.412.
At o lood of some
2
onrperes, the checked
voltoge should correspond to
volues specified
in the column "Checking".
lf the checked volt-
oge is within the specified ronge, do
not odiust
the regulotor. Othenwise odiust it to the volues
specified in the column "Adiustment".
lf woter
evoporotes obnormolly from the bottery, odiust
the voltoge regulotor to the bosic volues of
"Adiustment" utilizing the lower section of
the
toleronce zone.
Fig.13.al2 -
Wiring Diogrom of
Regulotor Tested
ond Adiusted on
o
G -
olternotor
REG -
voltoge regulotor
A -
ommeter
V -
voltmeter
S -
switch
R -
lood resistor
B -
bottery DK
1566
Voltoge Test Bench
178

1 3.1 6-t 3.1
7
focio ofter removing two
copscrews ol-l the
ponel bottom. lt moy
be olso necessory to pull
off the heoter control push
buttons.
c) Switch of disobility worning lights
For fostening see
informotion sub
b). -l
he
switch operotes only
when connected to the
direction indicotor ticker.
d) Dipswitch, direction indicotor, horn, wind-
screen wiper, ond winscreen wosher switch
ox 1568
instolled on
the steering
fostened to
the reduction
with shoft
beorings ond to
steering wheel shoft
shroud.
Fig.
13.16/1 -
Switch Box with Steering Lock -
the orrows indicote the copscrews (M
3.5)
holding down the switch box in the steering
lock housing
disengoging the shoft from
the bodywork -
see
Chopter 7.8, porogrophs
1 to 5 -
without, how-
ever, disengoging the shoft from
the steering
box. The switch box con be removed
ofter loosen-
ing two copscrews on the steering lock hous-
ing (see
illustrotion).
Reverse this procedure
when refitting the
switch box. Turn
the key ond
the key hole of
the switch box into the left-hond extreme pos-
ition (STOP),
instoll the switch box in the
steering lock,tighten the copscrews ond secure
them with o dob of point.
13.17 SWITCHES OF LAMPS
AND WARNING
SYSTEMS, DIRECTION INDICATOR
TICKER, RECEPTACLE
For the wiring of these electricol devices
refer to Chopter 13.1 -
Electricol Equipment
Connections ond Wiring Diogrom -
ond for
their operotion to Chopter 1.3.
All the devices ore expendoble ond they hove
to be reploced with new units if defective.
All the switches ore of the contoct type,
speciol types ond exceptionol connections ore
mentioned in the following text.
o) Switch of porking
lights ond heodlights
(feeder of chonge-over
switch
of these
lights)
The switclr is fostened to the instrument
ponel by o nut with o wosher under the push
button. When instolling the switch,
turn it so
thot it engoges in the locking slots. The push
button con be removed
by pulling
it off ond
refitted bv pressing
it down.
b) Heoter switch
This is fostened in the some monner
os the
switch sub o). Access to the switch
body con
be goined
by removing the centre ponel
of the This switch
is
column shoft ond
sleeve of the tube
the top port
of the
Removol: Remove the steering wheel
ond the bottom
port of the shroud -
see Chopter 7.8.
The switch
con be releosed from the shoft ofter loosening
the screw in the driver ond the removol of the
driver (
if the switch is equipped with
such
driver), ond the loosening of the
screw in the
yoke on the switch bottom right-hond side.
Loosen or remove the fostening screws of
the
shroud ond lift owoy the top port
of the shroud-
lf you
intend to remove olso the
steering
geor, do not loosen the screw
on the switch
bottom right-hond side but the screw on the
left-hond side, ond lift
owoy the switch
together with the reducit-tg
sleeve on the steer-
ing wheel shoft tube.
Refitting ond Adiustment
Reverse the described procedure when
re-
fitting the switch. lf the cor is equipped with
:" outomotic
direction
indicotor concelling
Fig. 13.1711- Adiusting Elements of
Directiorr
lndicotor Self-concelling Device
1 -
Centering pin
of the left-hond
switch or
mork on the switch foce, 2 -
Boss on the bush
foce, 3 -
Driver
194

13.18 FOG
LAMPS AND
OTHER OPTIONAL
EQUIPMENT
Fog lomps
The fog lomps ore optionol equipment. When
f itting them on the cor, refer to the wiring dio-
grom while observing notionol regulotions (in-
ternotionol regulotions
hove not yet
been uni-
fied os for os individuol requirements ore
con-
cerned) ond the following informotion. In
Czechoslovokio, the Decree
No.100/1975 of the
Book of Stotutes, porogroph
51, is opplicoble. Switching
reloy
Use o switching reloy of the some design
os
for the ouxiliory heodlomps (on
cors with twin
heodlomps) or onother reloy operoting in the
some woy. Any ploce
con be chosen for its
in-
corporotion into the circuit.
Cobles For worning lomps ond the reloy
switching
circuit use cobles with o section of 0.75 mm2,
for the remoining electricol equipment 1.5 mm2
section cobles.
R,ELAY SWITCHING OF HEADLAMPS
Optionol equipment moy include on incorpor-
crted reloy for switching in the heodlomps. In
some countries (for
exomple Sweden), this
reloy is required by regulotions. For the re-
spective connections see the following wiring
diogrom.
1L7 1L7a DK 1582
Fig. 13.1812 -
Wiring Diogrom of Heodlomps
Using Switching Reloy -
odditionol incorpor-
otion into the bosic electricol equipment
( Fi9. 13.1/1)
147 -
Reloy of moin heodlomps
147o- Reloy of ouxiliory heodlomps
Heated Rear Window (1979
on)
Circuit Divide into two sections.
1. Heater switch with five positions from
left
to right. a) Heated screen b) off c) High speed
fan d) Slow speed fan e) Slow speed and
heated screen. 2. Power supply.
;;---A.i'
t..[9-+'--'o
B
A
ll
Y
5-
r369
Fig. 13.18i 1 -
Wiring Diogrom of Fog Lontps
1- Switch, 2-Fog lomps, 3- Worning lomp,
4 -
Switching reloy (A -
reloy closing circuit,
B -
fog lomps feeding circuit), 5 -
Fuse No.1 of
cor electricol equipment, 6 -
Fuse No. 4 of cor
electricol equipment, 7 -
Fuse No. 7 of cor
electricol equipment, 8 -
Fog toil light, I -
Switch of fog toil light, 10 -
Wcrning lomp
Switches Instoll them on the ouxiliory ponel
(stondord
port of the
cor) under the focio. Use
the switch
with the built-in worning lomp for the toil light.
Worning lomps Use the unconnected green
wo,rning lomp in
the instrument ponel
for fog lomps; the worning
lomp oppertoining to the toil light
is built-in
in the switch.
I
I
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196

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