Radiator fan thermal switch - testing, removal and refitting
Testing
1 The thermal switch is located on the side of
the thermostat housing on early OHV engine
models and in the thermostat housing cover
on later OHV versions. On all CVH engines, the
switch is located in the thermostat housing. If
the operation of the radiator fan is suspect, the
thermal switch may be tested as follows.
2 Disconnect the wiring plug and bridge the two plug terminals with a length of wire or suitable metal object. The fan should now operate with the ignition switched on. If it does, the thermal switch is proved faulty and must be renewed. If the fan still does not operate, check the appropriate fuses, wiring and connections. If these are satisfactory it is likely that the fan motor itself is faulty.
Removal
Note: A new sealing washer will be required
on refitting.
3 To renew the thermal switch wait until the engine is cold, then remove the pressure cap on the thermostat housing or expansion tank as applicable.
4 Place a container beneath the thermostat housing to collect the small amount of coolant that will be released when the switch is removed.
5 Disconnect the wiring plug and unscrew the switch from its location.
Refitting
6 Using a new sealing washer, refit and
tighten the switch securely. Fit the wiring plug
and top-up the system as described in
Chapter 1.
See also:
Front suspension lower arm (pressed steel type) - removal,
overhaul and refitting
1 The pressed steel type suspension is only
fitted to pre-May 1983 1.1 litre models (see
illustration).
4.1 Pressed steel type lower arm components
A Lower arm
B Tie-bar
C Retaining bolt
D Ba ...
Front tie-bar - removal and refitting
Pre-May 1983 1.1 litre models
Removal
1 Jack up the front of the car and support it
on stands (see “Jacking and Vehicle Support”).
2 Unscrew and remove the nut which holds
the tie-bar to the larg ...
Engine - complete dismantling
OHV engines
1 The need for dismantling will have been
dictated by wear or noise in most cases.
Although there is no reason why only partial
dismantling cannot be carried out to renew
such items a ...