1980 SKODA 120 LS Workshop Manual

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11.4-11.5
I
I
I
F
r
t'
on to the coolont tonk.
Hose
clips ore formed
either by metol strips
or lengths
of wire. When
tightening the wire clips, toke core not to
domoge the rubber of the hoses.
To Fosten Pipes ond
Hoses
A correct winding of the strip is importont
to ensure o self-locking clomping of the strip
clips -
see Fig. 11.411.
Fig.11.Al1- Diogrom showing
the threoding
of
the clip strip through
the clip closp ond
the
direction of rototion of
the tightening cotter
pin -
the diogrom hos generol
opplicobility
1 -
Strip clip,2 -
Closp, 3 -
Cotter pin
The moin pipeline
routed under the cor f loor
consists of front ond reor pipes.
They ore em-
bedded in o chonnel moulded in the floor
boords ond rest on on insuloting (polysterene)
podding. From below, they ore protected
by
o guord,
the copscrews of which ore locked
in
position by spring woshers.
Use pipe
holders (yokes) to fosten the pipe-
line to the floor. In
the front
ond reor port
of
the cor, tighten
the pipes
over the insulotion
lrod ond insert
spring ond ploin
woshers under
the nuts.
Do not use insulotion pods
for bends
forming the tronsition from
the front
ond reor
lower flot ports.
Use spring woshers under
the
heods of copscrews.
Before instolling the pipes, prepore
ouxiliory
yokes (or use lengths of wires ottoched to the
provisionolly screwed-in copscrews of the pipe-
line guord) to liold the pipes
in the moulded
chonnel in
the floor before
the finol fostening
of their guord.
The woter line runs
under the cor together
with other lines, pull-rods,
etc. For their mutuol
ref otive orrongement see Chopter 12.7. Removol
To moke the underbody occessible for hond-
ling the pipes,
ploce
the cor over o floor pit
or
on o romp. The minimum required cleoronce is
obout 650 mnr.
1. Remo.re the guords
of the pipes
ond the
fuel tonk, lift owoy the spore wheel, ond loosen
the yokes
holding the pipes
to the floor.
2. Remove droin screws to droin the coolont
from the pipes -
see the illustrotion in Chop-
ter 15.'13.
3. Remove one hose clip in the middle
of the
cor to disconnect
the pipes
(ottention -
the
remoining coolont will f low out), ond dis-
ossemble the line.
4. Disconnect the pipe
ends from the hoses,
ond detoch the pipes
from the floor or other
ports of the cor.
5. Pull out the reor pipes
possing
them core-
fully oround the vorious cor ports.
6. Pull out the front pipes.
Turn
the front
wheels into their left lock position,
disconnect
the steering linkoge from the steering
reloy
lever ond the steering knuckle orm of the
right-
hond wheel, ond push
the linkoge ogoinst the
oxle body. While removing the pipes,
rotote the
left-hond pipe clockwise (when
viewing the cor
front end), ond the right-hond pipe
onticlock-
wise.
Reinstollotion Reverse the dismontling procedure
when re-
instolling the woter line. While connecting the
steering linkoge, poy
ottention to the condition
of boll pin
seoling cups (fit
new cups if the old
ore domoged). Fill in the recommended
coolont
ond bleed the cooling system.
11.5 COOLANT TEMPERATURE CONTROL
Throughf low Thermostot
This thermostot shuts off the inlet of the
coolont into the rodiotor
during the engine
heoting-up period. lt is mounted on the engine
- see Chopter 2.3, por.
30.
The thermostot operotes within the following
volues:
it begins to open ot 80+2"C
it is fully open ot 90+4oC
its lift ot full opening
11 mm
When closed, it
is permitted
to let poss
o nroximum
of 0.5 litres
of coolont per
minute,
ond it must not be closed by o bock pressure
of 0.16 MPo (1.6
kg/cm2).
When removing the thermostot by rototing
tlre rivet in the volve disk, breok owoy sedi-
I i
i 152

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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

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1 1.8-11.10
11.8 HEATER
CONNECTING LINE
The line is o
combinotion of steel pipes
ond
rubber hoses. All connections must be tightened
with clips of
the strip
type (see
Fig. 11.411) or
the wire type (bleed
hose). Toke
core not to
overtighten the clips of the lotter type os there
is o risk of domoging the rubber.
The hose from the pipe
of the thermostot
body on the engine is routed to the heoter
through the f loor tunnel, the return bronch
possing ogoin through the tunnel to the pipe
of
the pump.
Arronge the hoses olong the sides
of
the floor tunnel so
thot they do not touch other
ports in the tunnel.
For detoiled informotion obout the routing of
the hoses refer to
Chopter 12.7.
11.9 otl COOLER
The oil cooler is stondord
equipment of
Skodo
120 LS models. lts construction resembles thot
of the rodiotor. lt is
instolled in the
engine
comportment (boy)
ond ottoched to the right-
-hond engine guord.
Speciol pressure
hoses
connect it with the engine. lts connecting
diogrom is shown in
Fig. 11.911.
As regords oil coolers for subtropicol ond
tropicol regions, refer to
Chopters 16.1
ond '16.2.
Fi9.11.9/1 -
Oil Cooler-to-engine Connecting
Diogrom
1 -
Outlet from engine-right-hond cooler socket,
2 -
Oil cooler, 3 -
Inlet into engine -
left-hond
cooler socket Removol ond
Refitting
Disconnect the hoses fronr the engine ond,
occording to circumstonces ond the purpose
of
the removol, detoch the oil cooler from
the
engine guord
or remove the engine guord
together with the cooler ond brocket. Empty the
oil contoined in the hoses ond the oil cooler
into o suitoble vessel. When refitting the oil
cooler into the cor,
proceed in occordonce with the circumstonces
of the removol. Secure the bolts conecting the
oil cooler with the engine guord
ond the brocket
(the brocket being locoted between the cooler
ond the guord)
with spring
woshers. Bolt down
the guord
over ploin
woshers ond use o spring
wosher for the bolted connection of the brocket
with the bodywork.
Use seoling
woshers when connecting hoses
to the engine ond the oil cooler, ond put
o seoling wosher olso under the bolt. Close the
bolt of the engine port
ot the flonge with the
pressure switch. Fosten the hoses so thot they
ore not stressed in their bends. The
hose from
the timing geor
cover should be routed horizon-
tolly ond the hose ot
the engine inlet so thot
it includes o downword ongle of obout 15 de-
grees with the horizontol plone. Top up
oil in
the engine.
11.10 COOLING SYSTEM DEFECTS,
TESTING, REPAIRS, AND
CLEANING
Defects ond Testing o) lf there is o marked loss of coolont, check
oll connections for leokoge. The
loss of coolont
con olso be coused by o leokoge of the rodiotor
(or heoter). lf the leokoge point
is not visible,
pressure-test the system without removing it
from the cor. Admit seoled-off oir ot o pressure
of 0.12 MPo
(1.2 kglcmz) into the filler neck ond look for
ploces where the coolont is seeping or dripping
out. Inspect not only the rodiotor but olso the
lreoter. An excessive loss of the coolont con be olso
coused by engine overheoting. In thot cose,
look for the couse of engine overheoting.
b) Points to check if the engine
is overheoting
- coolont level
- operotion of thermostots ond rodiotor fon
- condition of rodiotor (whether
clogged out-
side with dirt, or whether cooted inside with
scole)
c) Points to check if the engine does not worm
up properly:
- operotion of thermostots
DX
tfSJ
156

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