Radiator Pressure Valve - MG MGA Twin Cam Workshop Manual

Fig. C.5 A sectioned view of the water pump showing the clearance between the body and the pump
vane
C.9 RADIATOR PRESSURE VALVE
To prevent loss of coolant due to vibration of the valve in the filler cap, a 7 lb. (3.175 kg.) remote
radiator pressure valve is now fitted. Cars equipped with the new valve are numbered as follows:
Car Nos. 575, 613, 623, 633, 648, and from 652 onwards.
To modify an existing radiator the following procedure must be carried out.;
Remove the existing filler neck from the header tank, rotate through 180°, and replace.
Fit the pressure valve (Part No. AHH5903), together with its bracket (Part No. AHH5906), to the inner
face of the left-hand air duct.
Fit the rubber connecting hose (Part No. AHH5905) from the filler neck to the valve, and the overflow
pipe (Part No. AHH5907) from the valve to the draining point. The overflow pipe is retained in position
at its lower end by a clip (Part No. PCR0607).
The parts required for this modification are listed below.
Description Part No. Quantity
87
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