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:
General Repair Procedures
Whenever servicing, repair or overhaul work
is carried out on the car or its components, it
is necessary to observe the following
procedures and instructions. This will assist in
carrying out the ...
Engine/automatic transmission assembly - removal and separation
Note: Refer to the warning at the beginning of
Section 5 before proceeding. A suitable hoist
and lifting tackle will be required for this
operation. Any suspected faults in the
automatic transmiss ...
Rear roadspring (Van models) - removal and refitting
Removal
1 To remove the single leaf type rear
roadspring from the Van, raise the rear of the
vehicle and support it securely under the body
members (see “Jacking and Vehicle Support”).
Support th ...