ventilation regulator valve, vent hose and hose con-nections. Clean the valve in clean carburettor solvent and dry it with compressed air. Clean the rubber hose with a low-volatile petroleum base solvent and dry it with compressed air. Clean the orifice in the carburettor spacer or intake manifold fitting.
Installation
1. Insert the regulator valve and fitting (elbow) Into the valve rocker arm cover mounting grommet.
2. Position the hose clamps on the vent hose. Connect the vent hose to the carburettor spacer and regulator valve. Using hose clamp pliers, slide the clamps into position.
3. Install the air cleaner and intake duct assembly. Connect the automatic choke heat chamber air Inlet hose. Operate the engine and check for leaks.
REGULATOR VALVE DISASSEMBLY
1. Remove the hose fitting (elbow) from the regulator valve.
2. Using a snap ring retainer tool, remove the snap ring retainer from the end of the regulator valve assembly.
3. Remove the valve retaining washer, valve and valve spring (Fig. 26). Carefully remove the valve spring from the regulator valve to avoid damaging the calibrated spring. Under no circumstances should the calibrated spring be altered in any manner.
Cleaning and inspection
See previous paragraph under cleaning.
Testing
Refer to page 16 for the test procedures.
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Regulator valve assembly
1. Install the spring and valve into the valve body. Be sure the pointed end of the valve is toward the threaded end or hose connection of the valve.
2. Install the valve retaining washer and snap ring retainer.
3. Install the hose fitting (elbow) on the regulator valve.
ROCKER COVERS
To remove
Remove air cleaner.
Disconnect plug leads BY PULLING ON THE MOULDED CAPS ONLY. Do not pull on the plug leads because this can damage the leads and cause misfiring. Lift the plug lead supports out of their location on the rocker cover. The left hand cover rear fixing screw can be reached from inside the car after removing its rubber cover plug in the body bulkhead.
When removing the right hand cover the generator, generator mounting bracket, ignition ballast resistor, and automatic choke hot air feed pipe have to be removed, and the crankcase vent pipe disconnected from regulator valve at the rear of the cover.
Remove fixing screws and lift off cover.
To refit
Clean the valve rocker cover(s) and cylinder head gasket surfaces. Apply oil resistant sealer to one side of the new cover gasket(s) and lay this side in place in the cover(s) as shown in Fig. 27.
Position the cover(s) on the cylinder head(s). Make sure that the gasket seats evenly all round the cylinder head. The cover fixing bolts are tightened in two stages. First torque the bolts to specification and then a few minutes later torque the bolts to the same figure as before.
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