Heater unit - overhaul
1 With the heater unit removed from the vehicle, remove the two securing screws and withdraw the heater matrix from the casing (see illustrations).
19.1a Remove the securing screws . . .
19.1b . . . and withdraw the heater matrix
2 Cut the heater casing gasket in line with the casing joint, then use two suitable screwdrivers to prise off the retaining clips and separate the casing halves. Withdraw the lower part of the casing to the side.
3 Remove the air flap valves, then press the control levers from the casing. Note that the “up/down” control lever can only be removed when the marks are aligned as shown (see illustration).
19.3 Heater “up/down” control lever must be aligned as shown before removal
Note that the cross marks are for right-hand drive vehicles
4 Clean all components and hose through the matrix to remove any debris. If necessary use a chemical cleaner to clear the inner passage of the matrix. Renew the components as necessary.
5 Reassembly is a reversal of dismantling.
See also:
Front anti-roll bar - removal and refitting
Removal
1 To improve access, raise the front of the
vehicle on ramps. Do not jack the vehicle up
at this stage. Apply the handbrake.
2 Where applicable bend back the locktabs,
then unscrew the tw ...
Road test (Every 12 000 miles (20 000 km) or 12 months)
Instruments and electrical
equipment
1 Check the operation of all instruments and
electrical equipment.
2 Make sure that all instruments read
correctly, and switch on all electrical
equipment in ...
Load apportioning valve (P100 models) - adjustment
Models before mid-April 1989
1 The vehicle must be unladen, at normal
kerb weight (a full tank of petrol, but no driver
or load).
2 With the vehicle standing on its roadwheels,
remove the spring ...
