1980 SKODA 120L key

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
z
Strike the
slip-over ring off the circlip
(towords the motor windlng). Open the circlip
ond pull
it off the shoft together with the re-
leosed ports.
8. lf necessory, re-turn the commutotor ond
scrope or mill out the insulotion between the
lominotions. "Mikonit"
should be 0.4 to 0.8 mm
below the octive surfoce.
Note: The
switch connot be further token
opat. lf
defective, lt hcs to be reploced with
o new one. When cleoning ports
of the storter
motor, do not dip the ormoture or the pinion
with the idler into petrol
or onother degreosing
ogent.The some opplles to the end shieldswith
beorings. By dipping them in o degreosing
ogent, the beorings become procticolly
worth-
less"
Storter Motor Reossembly 1. Lubricote the hellx of the ormoture shoft
with greose -
see Chopter 15.2 'Lubriconts
of
foreing mokeu ond fit the pinion
with the idler
ond the slip-over ring in posltion.
Fit the
circlip
into the groove
in the shoft, ond drive the slip-
on ring over it. The pinion
with the idler must
move freely olong the shoft.
2. Slip the respective
woshers on the shoft in
their originol sequence (corrier
ring, distonce
ring, fibre ring, distonce ring) ond insert the
ormoture with the engoging lever
into the drive
end shield. 3. Suspend the switch
ormoture into the
pre-engoging lever ond bolt down the switch
lightly. Fit the lever pin
into the drive
end
shield ond lock it in position
with the retoiner.
4. Tighten the copscrews of the switch
ond
fit the stotor on the drive
end shield.
5. Instoll the respective
woshers into
the
commutotor end shield in
their originol se-
quence (the dished wosher with its centre
focing the shield, then the ploin
wosher, the
toothed wosher, ond the drive wosher).
6. Fit the commutotor end shield with lifted
brushes on the shoft (in
the position
occording
to the recess
for the excitotion outlet ond the
notch) ond screw in the clomping bolts.
7. Instoll the brush interconnecting strip ond
bolt it down together with the field winding
outlets to the positive
brush holders, lower the
brushes. 8. Fit the Insuloting strip in position
ond bolt
down the cover. 9. Test the storter mottr.
Diognosing Storter Motor Defects in Cor
o) lf the storter motor refuses
to operote, look
first for on interrupted connection between
the bottery ond
the storter
motor, the engine
eorthing ond the storter
motor, or the engine
eorthing ond the bottery. lf these connec-
tions ore in order (current
flows to the ter' DK
1575
Fig. 13.10/3 -
Storter Motor Testlng Connection
minols u30"
ond "50"
with switched on
ignition), stort looking for o foilure of the
storter motor switch. Even in this instonce,
the couse con be o fully dischorged or foulty
bottery.
b) lf the storter motor
continues running
even
ofter the ignition key hos been switched in
the switch box from the position "START",
it hos to be stopped without ony deloy by
disconnecting the bottery (using
its eorthed
pole).
c) lf the storter motor hos no power
to cronk
the engine, stort with switched-on heod-
lights. A
morked dimming indicotes c poorly
chorged bottery.
Tentotive Checking of
Storter Motor
Outside Cor
Connect the terminol "30'of
the storter
motor to o properly
chorged bottery ond incor'
porote on ommeter with o wide
meosuring ronge
into the circuit -
see Fig. 13.10/3.
Stort the
engine (feed
current to the terminol "50").
The
volue of the current ot idling speed must
not
exceed 65 omperes (not
considering the peok
ot
the first momentous deflection).
The storter motor must run noiselessly,
smoothly, ond the pinion
must move smoothly
into ond out of the rest position
(engoge
ond
diesengoge). The engoged pinion
must not ro-
tote direct on the foce of the slip-on ring. The
run-out of the storter motor must not lost longer
thon 8 seconds ofter the disconnection of the
switch from the current supply.
Inspect the brush pressure
springs. The
brushes must
beor on the commutotor by ot
leost two thirds of their surfoce ond they must
move freely in their cells.
The ormoture should hove o noticeoble oxiol
cleoronce (ploy)
not exceeding 0.7 mm.
At
o slight rototion of the pinion
in the direction
of the storter motor rototion,
the idlor must
slip
freely.
186

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