Spark control system components (carburettor models) - removal and refitting
Spark delay and sustain valves 1 Disconnect the vacuum pipes at the valve and withdraw the valve.
2 When refitting a spark delay valve, the valve must be positioned with the black end (marked “CARB”) towards the carburettor and the coloured end (marked “DIST”) towards the distributor or electronic module (as applicable).
3 When refitting a spark sustain valve, the valve must be positioned with the end marked “VAC” towards the carburettor and the side marked “DIST” towards the distributor or electronic module (as applicable).
Ported vacuum switch
4 Where fitted, the switch(es) may be located
in the inlet manifold and/or in an adapter fitted
in one of the coolant hoses.
5 To remove a switch, partially drain the cooling system. Note that there is no need to remove the cylinder block drain plug.
6 Mark the vacuum pipes for location so that they can be refitted in their correct positions, then disconnect the pipes from the switch.
7 Unscrew the valve from its location.
8 Refitting is a reversal of removal, ensuring that the vacuum pipes are correctly connected. Refill the cooling system.
Fuel trap
9 Disconnect the vacuum pipes at the fuel
trap and withdraw the fuel trap.
10 When refitting, the fuel trap must be positioned with the black end (marked “CARB”) towards the carburettor, and the white side (marked “DIST”) towards the distributor, electronic module, or ported vacuum switch (as applicable) (see illustration).
22.10 Fuel trap vacuum connection markings
Spark control system additional
components
11 According to model, engine and
equipment, additional components such as
one-way valves or solenoids may also be
fitted as part of the spark control system.
12 The removal and refitting procedures for these components are basically as described previously, and provided that all attachments are marked for position prior to removal, no problems should be encountered.
See also:
Rear disc splash shield - removal and refitting
Note: A suitable puller will be required to
remove the drive flange, and a new rear hub
nut must be used on reassembly.
Caution: Refer to the
precautions in Section 1.
Removal
1 Loosen the rear ...
Coolant pump - removal and refitting
1 Disconnect the battery negative lead.
2 Drain the cooling system.
3 Proceed as follows according to model:
SOHC models
4 Disconnect the heater and radiator bottom
hoses from the coolant pump.
...
Rear axle tube (Van models) - removal and refitting
Removal
1 Raise the rear of the vehicle and support it
on stands (see “Jacking and Vehicle
Support”). Remove the rear roadwheels.
2 Support the axle tube on a jack preferably
of trolley type.
3 ...