1980 SKODA 105S ESP

1 3.9-1
3.10
13.9 HORN
It is situoted behind
the left'hond port of
the
front bumper. To
remove it, disconnect the
leods ond remove the
fostening screw. heor
the ormoture being ottrocted (o
cleor ond
loud click). Now continue to
switch the bottery
on ond off
while rototing
corefully ond
sloryly
the screw "1"
onticlockwGe till
the
horn sounds'
iune it by rototing the odiusting.:cr9ry slightly
clockwise or
bock.-After hoving
odiusted (tuned)
ih" honn, secure
oll
odiusting ports with
o
dob
of point.
12
volts
4 omperes
Operoting
voltoge
Moximum current demond
Horn Adiustment
Before odiusting (tuning) the
horn, clomp it
firmly by th'e brocket ond
tighten thoroughly
oll screws "4"
ioining the
horn cover
with the
housing ond the dioPhrogm.
1. The horn is "hoorse"
- Using o screwdriver
rotote slowly the screw "1"
clockwise to odiust
the current demond
till the tone is cleor.
2. The horn sounds weokly -
Using o screw-
driver, rotote the screw "1"
slowly onticlockwise
to decreose the current demond
till the tone is
loud ond cleor.
3. The horn does not sound ot oll-Proceeding
through the operture in the front cover, loosen
the nut "2"
using o socket
sPonner. Then
insert
o screwdriver ond rotote
the odiusting screw
clockwise till it
beors lightly on the core. Then
bock off the screw by 1lz
or moximolly 3/a
of
o turn to odiust the distonce
of the ormoture
from the core. Hold the screw in this position
with the screwdriver ond
tighten firmly the nut
by rototing it clockwise. After hoving
connected
the bottery (of
the specified voltoge), you
will Fig.
13.9/1 -
Sectionol View
of Horn ond
o View
of Reor
Adiusting Screw
13.10 STARTER MOTOR
This is o series motor for
intermittent oper-
otion with on
electromogneticolly engoged
pinion. -@
c@c
Specif icotions
TyPe Roted outputStorting torqueSpeed for roted output
Voltoge ocross terminol
No-lood storting current
Direction of rototion
Number of pinion
teeth/modulus .
Contoct spring pressure PAL-Mogneton
12 V/0.8
h.
p. -
443'115'142'070
0.66 kw (0.e h.
P.)
12.25 Nm (1.25
kgm)
'1,000 r. p.
m. moximum
9.5 V moximum
65 A moximum
onticlockwise (left'hond)
912.5
e.3 N (0.ss0 ks) +100/6
"30"
of roted output
Mointenonce The mointenonce consists of periodicol
in'
spections ond repoirs or replocement of foulty
ports:
o) brushes
b) brush springs
c) commutotord) storter pinion ond idler
e) self-lubricoting beorings The brushes
must
be sufficiently long
ond
they must slide
freely in
their-cells, their
press-
ure springs must hove o
sufficient thrust,
the
commutotor must not
show ony
domoge, ond
it
must be
free of dust ond dirt.
Cleon the
commu-
totor with olcohol, petrol or
trichloroethylene,
ond let it dry before closing it
ond switching
on the storter motor. A
burnt or mechonicolly
domoged commutotor must
be repoired or
re'
ploceJ immediotely. A commutotor in
good con'
dition hos o brownish red
hue.
184

(
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

t 3.t
r*r 3.1 2
1. lf the wiper moves with the switch in the
OFF position
ofter its
connection to the electric
power supply, tighten (screw
down) the screw
till it begins to be litfed by the geor
com ond
till the wiper begins to be
switched off ond
broked. Screw down the screw from this po'
sition by onother holf turn.
2. Press the lid into
the cover ond seol it
with point.
WIPER ARM DRIVE
This drive consists of thewiper beoringswith
cronks, the tie-rod of the
cronks, ond
the driv-
ing tie-rod. The
drive is instolled in the cor os
o unit.
Tie-rods The tie-rods should be slipepd on
the cronk
pins in the
following sequence:
o springwosher
with its centre comber focing outword (owoy
from the pin),
o flot
wosher, the tie-rod, o flot
wosher, ond o lock
ring.
lf necessory, lubricote the ioints with
greose
- see the following section deoling with beor-
ings. Fill the cover at the point
of the tie-rod
motor cronk connection with greose
(of ony
brond) ond slip it on the tie-rod.
Beorings On one side, the beoring
is inserted into the
wiper brocket from inside the body, on the
other side, it is fitted into o speciol wosher in-
serted with its nose foremost
into the re-
spective hole in the body. Locote o seoling
wosher with corefully smoothed-out edges ond
o flot
wosher from outside, ond secure the
entire unit with the respective
nut. The
unit is
seoled off by
o rubber pocking.
Fill the unit
with greose (see
Chopter 15.3 for recommended
foreign bronds or Czechoslovok Lrronds SP 4 or
A 4) ond press
it down into the neck of the
bush.
lf it is necessory to remove
or disossemble
the beoring, prise
the lock ring out of the pin
groove under the rubber pocking.
On reossembly,
insert o spring wosher under
the bush with its
combered centre
toword the bush. Lubricote
with the specified greose.
Wiper Arms
The wiper orms fitted with o rubber
blode
con be swung owoy from
the windscreen. They
ore held down by nuts
on the grooved
topers of
the beoring pins.
After hoving fitted
the wiper orms, sproy
woter on the windscreen
ond test the run
of the
wipers. lf necessory, turn the wiper cms
on the pins.
The wipers must wipe
the lorgest
possible oreo of the windscreen without, how'
ever, touching the windscreen glozing
mould-
i ng.
13.12 RADIATOR FAN
Technicol Description
The fon is on ossembly of the fon motor ond
impeller. The
impeller is pressed
on to the
motor shoft. The motor hos permonent mognets ond
o rotor running in self-lubricoting beorlngs. The
impeller is mode of plostic.
Motor type
Roted voltoge Roted current
Roted output
Direction
of rototion PAL 443.132
-
O97.O45
12 volts
7.5 omperes
55 wotts
clockwise (right-hond) when
viewing the front end of the
shoft
Coble poles
coble with lug (blue) -
negotive pole
coble with femole connector
(red) -
positive pole
Removol ond Refitting
The fon is
occessible ofter
removing the
rodiotor to which it is fostened by meons of
o rim held down by copscrews ond sprlng
woshers. The motor rests on resilient bushes in
the rim. When refitting the fon moke sure thot
there is o spocer tube in the bush, locote the
flot ond the spring woshers, ond tighten
the
nut.
Cleoning ond
Repoirs
Refer to porogrophs
1 to 3 deoling with
cleoning ond repoirs in Chopter 13.11.
Dismontling Motor ond lmpeller
The motor con be removed (ond
dismontled)
only ofter removing the impeller. Use the puller
MP 8-102
to pull
off the fon or support the fon
hub in three points
on its circumference ond
press out the motor by opplying
Pressure on
the motor shoft. No topping or blows on the
shoft ore permitted.
1. Remove the nuts of the clomping bolts,
hold the shoft
by its grooved
end, ond lift
owoy the
commutotor end shield ond stotor.
190

t3.tt-l
3, I 5
I 2.
Remove the clomping
bolt from the brocket
ond lift owoy the motor.
3. Remove the other clomping
bolt from the
motor, lift owoy the stotor ond the
brush
springs, ond push
out the brushes. The
other
motor ports
connot be dissosembled.
Reossembly of Motor ond lmpeller
1. lnstoll the stotor with the slot focing
the
bosses on the frome ond with its index line
focing the line on the frome,
ond fosten
the
ports with screws ond woshers.
2. Instoll the brushes ond brush springs,
suitobly orch the brush cobles so
thot they do
not obstruct the movement of the brushes ond
so thot they connot
couse o short-circuit.
3. Top the stotor lightly with o soft
mollet
to settle it in
the beorings, ond lubricote
the
beorings. 4. Connect the motor to the power
supply
ond test briefly its running ond direction
of
rototion. lf it rototes in the opposite direction,
rotote the frome
ossembly through 180'.
5. Remove the clomping bolt of the motor on
the terminol boord side, instoll the motor in
the brocket, ond lock it in position
with the
bolt ond wosher.
6. Fit the spring on the motor shoft,
support
the shoft
to ovoid domoging the beorings, ond
press-on the impeller. The cleoronce between
the impeller circumference ond the brocket
must be smoll,
obout 1.5 to 2
mm. Lock the im-
peller in position
by pressing -
on the lock ring
- ogoin the motor shoft
must be supported.
7. Close the motor beoring from obove by
fitting the cover.
13.14 WINDSCREEN WASHER
Technicol Description
The windscreen wosher is o unit comprising
o reservoir, o pump
with motor, o distributor
volve,two nozzles, ond the connecting pipeline.
Windscreen wosher type MEZ MM 2004
Roted voltoge
Roted input .
Pump dischorge,
minimum .
12 volts
. 50 wotts
. 15 c. c. ot o pressure
of 10 MPo
(1 kg/cme)
Fitting, Removol, ond
Adiustment
The reservoir is held in
its ploce
by o cover
bond secured by copscrews with flot woshers.
The motor with pump
is bolted down, using
flot woshers under the copscrews. The suction
bronch socket is smooth, thot of
the dischorge Fig.
13.1a11- Windscreen Wosher
1 -
Reservoir, 2-
Sproying nozzles, 3- Motor
with pump
bronch reinforced with o collor; the positive
pole is connected to the suction side, the
negotive pole
to the dischorge side
(when
viewing the cor from the front, suction is
on
the right-hond side, the dischorge on the left"
hond side).
The distributor volve
is fostened by o cop-
screw, the distribution pipeline
being simply
fitted on it. The nozzles (heods
with nozzles) ore se-
cured in position
by pressing
them down from
obove into bushings
inserted into the cor body
by their necks. To
odjust the required direction
of the woter streom,
turn the nozzles to
the
respective ongle using o needle inserted into
the nozzle hole.
Fil!ing the Reservoir Open the reservoir by turning its
cop onti-
clockwise. In
summer, fill it with woter or
o mix-
ture of woter ond one of the odditives for
wind-
screen woshers ovoiloble on the morket, ond in
winter exclusivelywith on ontifreeze of o brond
intended speciolly for windscreen woshers -
never use on ontif reeze
intended for motor
vehicle cooling systems. Be coreful if
the body finish is touched up
with other thon boking enomel. Additives in
the woter ond other
liquids, usuolly contoining
spirit, ore opt to leove
unremovoble spots on
the enomel. Use only woter when testing the
windscreen wosher.
13.15 INSTRUMENT
PANEL
Technicol Description
The instrument ponel
contoins oll meosuring
instruments ond indicotors recommended by
192

1 t.1
-1
4.3
surfoces ore
sproyed with o
Protective com'
pound. The floor boords including the floor of
the boot ore covered with textile corpets while
rubber mots ore used in Skodo 105 S.
The in-
terior luggoge comportment is
lined with insu-
loting felt
sheet.
fne body finish consists of severol loyers of
speciol onti-corrosive cootings, o primer
coot,
ond o synthetic boking enomel top
coot in
colours complying with
o speciol specificotion.
14.1 BUMPERS
To Remove Front BumPer
Disconnect the
leods of the horn ond front
direction indicotors. Remove bolts connecting
the side sections of
the bumper with the wings
ond bolts of the bumper brockets, connecting
them to the wheel splosh guords. Now
the
entire bumper is free ond it con be removed.
Te Remove Reor BumPer
Proceed in the some woy with the exception
thot there ore no leods to be disconnected.
To Remove Overriders
Screw off the nut M 10 ond lift owoy the
overri der.
14.2 WTNGS
To Remove Front Wing
First remove the front bumper (see
Chop-
ter 14.1), the front door (see
Chopter 14.5), ond,
in the cose of the left-hond wing, the boot lid
Fig. 14.211- Removing Front Wing -
orrows
indicote fostening points (see
Chopter 14.3). lf the door sill is covered
with o trim moulding, loosen this moulding
portiolly. Now remove the bolts fostening the wing to
the bodywork under the sill (from
underneoth),
on the side edge of the body post,
in the chon'
nel next to the boot, ond in the forebody under
the heodlomp.
To Reinstqll Front Wing
lf the seol strip in the front
Port of the wing
is domoged, reploce it with o new one, ond
stick it on if it hos got
unstuck. Pock olwoys
o new seoling strip between the wing edge ond
the body fromework. Then instoll
the wing in
position ond locote it by tightening slightly the
connecting (fostening) bolts.
Do not tighten
the bolts firmly before hoving fitted properly
the wing.
14.3 BONNET AND BOOT LID
Removing Boot Lid
Remove the nut ond bolt of the strut ond
the screws fostening the
hinges, ond lift owoy
the complete lid.
Removing Engine Bonnet
Slip the bonnet strut out of
its guide,
screw
off the nuts of the hinge fostening bolts, ond
lift owoy the bonnet.
Reinstollotion ond Adiustment of Boot Lid
ond Engine Bonnet
Instoll the lid (or
bonnet) over
the luggoge
(or engine) comportment ond
tighten lightly
the bolts ond/or the nuts of the hinge bolts.
Moke the lid (or
bonnet) fit perfectly
with the
edges of the bodywork by shifting the hinges
in their respective holes
os necessory, ond
tighten fost the bolts ond/or nuts of the hinges-
Assemble the strut of the boot lid.
Boot Lid Releose Rod ond Engine Bonnet
Releose Coble
The releose rod of the boot lid (Fig.
1.3113)
is connected with the reloy link by meons of
o pin
ond forms on ossembly unit with the lid
locks. The
hondle of the releose rod con be
removed ofter pushing
out the pin.
The entire
ossembly con be lifted owoy ofter removing the
lid locks.
Reverse this procedure
to reinstoll the os'
sembly. Tighten the bolts of the locks lightly
ond fit the lid properly
in positlon.
Now odiust
202 c
o
o
o ir
e
tt d

! Door Cotch
Retoiner
The position
of the door cotch retoiner on
the door pillor
ond/or the reor wing foce con
be odiusted within certoin limits ofter loosen-
ing its fostening screws. Adiust the retoiner
in the required position,
check the door for cor-
rect closing ond fitting
with the other ports
of
the bodywork, ond then retighten
the screws.
The door cotch must slide
on to the leodlng
surfoce of the retoiner
so thot it rests
ogoinst
it. Sometimes, it moy be necessory to ploce
o pocking piece
under the retoiner (to
prevent
the fouling of the door cotch pin).
ln such
o cose, mork the position
of the
cotch on the
bodywork, slocken the screws, ond instoll o
pocking piece under the retoiner slipping it
over the lower screws ond
tipping it into po-
sition on the upper screws. It is importont to observe the correct ongle
of the inclinotion of the retoiner leoding sur-
foce, which hos to
correspond with the incli.
notion of the beoring surfoce of the door cotch
(outer door lock). Therefore, fosten the bose
plote of the retoiner so thot its upright stiffener
is porollel
with the edge of the moulded recess
for the retoiner
on the door pillor
ond the reor
wing. The leoding surfoce of the retoiner is provided
with o friction plote.
In the cose of domoge
(excessive weor, impoct of on incorrectly od-
iusted door, etc.),
prise
off the originol friction
plote ond fit o new one. lf the friction plote is
locking or if it is excessively worn, the door is
opt to rottle.
Fi1.14.514 -
Door Cotch Retoiner
14.6 WINDSCREEN, REAR WINDOW,
SIDE WINDOWS
To Remove Windscreen ond Reor Window
Rernove the connection of the spocing Insert
ond lift owoy the spocing
insert of the glozing rubber
moulding
using o suitoble tool. Now
press corefully ogoinst the gloss from
inside
the cor ond slip the liP of the glozing
rubber
moulding step
by step over the edge of the
windscreen or window frome
olong its entire
circumference, ond finolly lift owoy
the gloss
together with the glozing rubber
moulding.
To Refit Windscreen ond
Reor Window
First cleon thoroughly the
edges of the gloss
ond of the window opening (frome).
Slip the
glozing rubber moulding over
the edges of the
g loss.
lnsert o twine with o smooth surfoce or, pre'
ferobly, o rubber insuloted coble of 2.5
to 3 mm
in diometer into the inner groove of the glozing
rubber moulding.
Fig.M.6l1- Fitting Glozing
Rubber Moulding
on o Gloss Pone
Fig.14.612 -
Inserting o Twine into
the Groove
of the Glozing Rubber Moulding
206

Reverse
the
dismontling procedure
to rein'
stoll tl-re window ond its winder. The
loterol
ploy con be odiusted by odiusting (swinging
out) the centre post
ofter hoving loosened the
respective bolts ond nuts -
see Fig. '14.6/6
ond/
or 14.617.
Use this occosion to lubricote inner door
mechonisms -
see Chopter 15.12.
Fig.14.617 -
Reor Door Control Linkoge
ond Fostening/Adiusting Screws
1 -
Inner lotch control link (short)
2 -
Reloy lever
3 -
lnner lotch control link
(long)
4 -
Inner hondle pull
rod
5 -
Fostening/odiusting screws ond nuts
of
the
centre post
(third screw in upper port
of centre post)
Repair of Window Regulator Defects
lf the windows are difficult to wind up and
down (the
maximum torque applied on the
spindle of the window regulator with the glass
installed in the doors exceeds 2.5 Nm) (1.77
tt
lbs), it is recommended that the following steps
are taken as regards both the front
and rear doors:
1. Disconnect the regulator driving plate
from
the window glass
channel. Push the glass
upward
and try the relieved regulator by turning the
regulator crank. lf the regulator does not work
smoothly (jamming,
rattling) or if
a torque higher
than O.7 Nm/(O.495 ft lbs) in front and 1.1
Nm/(0.78 ft lbs) in the rear is required for its
operation, replace the whole regulator with a new
one working satisfactorily.
2. Adjust the centre pillar position
in the door
using the jig
as per
drawing No. A1-1 5417-S.
Loosen the top screw of the centre pillar
and
retighten it while pressing
the centre pillar
against the window glass
wound up to its upper-
most position.
Loosen the bottom screw of the
centre pillar
and retighten it while pressing
the
centre pillar
against the
window glass. 5417
-
S
-l! L
3. When bolting together the regulator driving
plate with the window glass
channel make sure
that the holes in these two parts
coincide along
the whole length of the channel. lf it is not so,
move the
channel into a satisfactory position.
4. lf the regulator is
not lubricated, lubricate the
regulator cable in the
tubing with grease
and
apply oil to the regulator
crank spindle.
To Remove ond Reinstoll Reor Door Fixed
Window
Agoin remove first the door trimming. The
gloss is only inserted
into the door frome ond
supported by o bolted-down holder with o rub-
ber pocking piece.
The gloss
con be moved in
the door
covity ond withdrown through the
door frome.
14.7 TRIMMING UPHOLSTERY AND WEATHERSTRIPS
Ponel-type Trimming
This type of trimming is used for
the doors -
see Chopter 14.5, Fig.14.511- ond for
the front
ond reor window posts.
Ponel-type trimming
fostened by clips (flexible
spocing pins)
covers
olso the porcel
troy below the reor window, the
outer guideroils
of the front seots, the front
wheel orches, ond the focia. On centre posts,
the trimming is fostened by screws.
208

I
x
li
I
I
.t
the
ploces
from which you
hove removed the
sticking dirt ogoin, ond wipe
the entire body-
work diy, including chromium'ploted ports,
with
chomois leother. Wosh ond
wlpe dry the vor'
nished surfoces with uniform strokes in one
direction, i. e.
not
by circulor movements.
After hoving wiped oll vornished ports
of the
bodywork dry, polish
them with o soft (flonnel)
duster. Do not use polish
of ony kind.
lf the bodywork is so dirty thot it connot be
woshed cleon with woter, use cor
shompoo.
lf it is necessory to refreshen the gloss
of the
finish, use o cor polish
occording to instructions
of its monufocturer. To wosh the underbody,
use o hose ond
running woter, worm or cold; never use petrol,
kerosene, diesel oil, etc.
Remove greose
spots with o cloth, dry or
sooked in petrol
if necessory. To
remove tor, dip
the cloth in kerosene or o speciol
tor removing
preporotion, ond rub the spots. Then
immediotely
wosh owoy oll troces of
kerosene or the tor
removing solution, ond repolish the spots with
o cor polish.
TOUCHING.UP VARNISH
Preporotion:
Removol of Polishes etc.
When touching up o repoired bodywork (dom-
oged surfoce
finish), it is
importont to olso
cleon the surrounding vornish
to prevent
the
touching-up point
from floking off loter on in
ploces of overlopping.
Remove cor polishes
with o shompoo. Silicone
oil, contoined in some bronds
of polishes
ond
preventing the odhesion of the touching-up
point, con be woshed owoy only with o speciol
preporotion. !n Czechoslovokio, this is
for
exomple VENEDIN. Rub with this preporotion
olso vornished oreos which will be roughened
by grinding
where the bore ploces
poss
into
ground ond cemented oreos.
Removol of Rust
Remove rust mechonicolly by grinding
or
rubbing with emery poper
ond woshing with
c derusting ogent (for
exomple SK 2,
which is
bosicolly o 300/s phosphoric
ocid).
Procedure: f irst cleon the rusty spot with
emery poper
No.80 ond 100
or using o grinder.
Then rub the spot with o 15 0/6
solution of
phosphoric ocid (SK 2 deruSter)
heoted up to
40oC. When using o cold solution,
its concen-
trotion must be obout 300/e (undiluted
SK 2
deruster). Work in rubber gloves.
After hoving removed the rust, wosh
the spot
twice. First
with tepid or cold woter,
soft or softened
by odding 2
to 2.501s of sodo,
then
with o solution of chromium trioxide (1 gr.
to
1 litre of soft
woter) heoted
up
to 80oC (thls
is
the so-colled possivoting
rinse). Now let the
spot dry.
Degreosing Degreose the spot to be touched up by rub-
bing it down with trichloroethylene or technicol
petrol.
1. Touching-up with low-boking points -
the most perfect procedure
o) Cleon the touched-up spot, derust
ond
degreose it (see
the previous
porogrophs
on
preporotion)
b) Sproy over with priming point
c) Let the priming point
dry ot 80oC to 110oC
for o period
of 50
or 15 minutes (50 minutes
ot 85oC, 15
minutes ot 110oC)
d) Coot over with synthetic cement or poly-
ester cement
e) Let the cement dry ot 85oC or 110oC for
o period
of 50 or 15 minutes respectively;
when using polyester
cement, the drying
period con be shortened -
this cement dries
of normol temperoture
f ) Grind under
woter with emery poper
No.280
to320till the spot is perfectly
flot ond even,
ond let it dry
g) Sproy with top-coot vornish
h) Let it dry ot 80oC to 110oC for
o period
of
15 or 50 minutes respectively; ofter boking,
the vornish hos
o high gloss
ond it is not
necessory to polish
it
i) Use o polish
to remove
ony visible troces of
tronsition between the originol ond the
new
vornish.
2. Touching-up with
nitro-combinotion vornish
o) Cleon, grind,
derust, ond degreose the spot
to be touched up
b) Apply priming
point with o brush or o
sproy-gun
c) Level up, if
necessory, with on oil-bose
cement (once
or twice)
d) Let
it dry lor 24 hours ond then grind
with
emery poper
No.220
e) Sproy
the entire touched-up oreo with
sproying cement ond let it dry for 24 hours
f) Grind with
emery poper
No. 280 ond 320
under woter till the oreo is perfectly
smooth
ond flot, ond let it dry
g) Sproy the touched-up spot with o vornish
prepored by mixing low-boking
,vornish
(Toolol ond touching-up vornish (300/e);
use
exclusively o
nitro-thinner for diluting the
vornish
210