heating Citroen CX 1974 1.G User Guide

Downloaded from www.Manualslib.com manuals search engine Op. MA. 642-00
(< FROID - 20 n HEATING SYSTEM
This heating system consists of the following :
- A device to heat the inlet air
- A’device to increase the heating in the passenger compartment
- A water temperature gauge
- The crankcase has a plug which can be removed to allow a heating element to be inserted in order
to heat the engine coolant

Downloaded from www.Manualslib.com manuals search engine .
DEVICE FOR HEATING THE INLET AIR
It consists of the following
A - A vacuum capsule situated at the air-filter intake
B A thermal sensor, situated in the duct linking the air-filter to the carburettor
C - A,device for heatinq the inlet air by means of the exhaust (by having a take-off on the exhaust manifold shield). ASSEMBLY DIAGRAM
Carburettor
Calibrated ori fi ce for
vacuum intake
COLD AIR -
A. VACUUM CAPSULE
II I
I
t I
Position of capsule, when
not under vacuum ( flap open,
closing plate closed )
I
m-t L2
L-H ii
---+- Thermal
sensor filter
Position of capsule
under vacuum
(flap closed, closing
plate
open 1

Downloaded from www.Manualslib.com manuals search engine Op MA. 642-00 5 II. DEVICE FOR INCREASING THE HEATING OF THE PASSENGER COMPARTMENT
This device entails modifying the following components
- Heater distribution box ( outlets towards side vents unplugged, different radiator )
Side vents with twin outlets ( ambient or heated air )
Addition of Westaflex ducts ( link from heater distribution box to side vents ). III. WATER TEMPERATURE GAUGE
The presence of a water temperature gauge entails modifying the following components :
- water pump spacer ( addition of a temperature sensor )
steerinq column surround ( location of temperature gauqe )
- engine harness for warning lamp senders ( addition of lead from temperature sensor to front wiring harness )
addition of a temperature sensor and a temperature gauge.
Ater temperature gauge on steering column surround
.Temperature sensor on
water-pump spacer
P

Downloaded from www.Manualslib.com manuals search engine OPERATION No MA. 961-O : C/ 3fc ztzg and repairing a war winabzc’ hrating elcmcnt k’ Op. MA. 961-O 1
I. CHECKING
Power of heating resistance :
S&Ions ., 140 to 160 watts at 13.5 1: 0.2 volts
Estates .,.,............: . . . . . . . .._.... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ~.. 130 to 150 watts at 13.5 t 0.2 volts
To check :he heating resistance of a rear window. measure
Either the current flowing in the resistance, using an ammeter connected in series to the supply lead of
the element. The current should be :
Saloons ,..., ., ,. ,. ,..,. ,,., ,,,., _, ,. .,., ..l_. 9.2 to 10.6 amps at 12 volts
Estates . . .., ,,..._.__.. .:_._ ._ . ..8 5 to 9.8 amps at 12 volts
Or the resistance using an ohmmeter. Resistance should be :
Saloons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . j _..__.._....,. 1.1 to 1.3Q
Estates . .._...........,.,.,...,.....,..,..................................,,..,.,.,.,........,. 1 .2 to 1.4 !J
II. REPAIRING
1. Replacement of terminals : Tin that part of the terminal to be soldered. Solder it in the required location ( soldering iron ).
2. Repairing a section of the heating element : a) Obtain from the Replacement Parts Department :
- 1 Repair kit .,,..,,..,,.,.,.,.,,,.,.,,....,................,,,,,...,., ZC. 9 855 128 U
This M SECURIGLACE ))‘outfit includes :
- 1 Bottle of abrasive cleaning powder
- 1 Small bottle of conductive enamel
- 1 Tube of adhesive
- 1 Tube of hardener for adhesive
- 1 Small bottle of metallic powder
- 1 Roll of thick self-adhesive tape
- 1 Warning lamp for detecting cuts
- 1 Roll of self-adhesive tape for detecting cuts ( thermopaper )
- 1 Plastic spatula
- 1 Small glass plate ( for preparation of mixtures )
b)
Locating the cut : With the resistance fed as normal :
- Locate the defective resistance wire by sticking the adhesive detection tape at the centre of the rear
window ( interior side ) and on all resistance wires so that the tape is perpendicular to the latter.
The unbroken wires will turn the thermo-paper blue when they increase in temperature.
- Slide the two pointed probes of the warning lamp support on the cut wire. When the lamp lights up,
the pointed probes are on both sides of the break in the wire.
By slightly moving the probes along the length of the wire, the exact extent of the cut can be determined.