Technical Data
System type         Pressurised, thermo-syphon, pump and fan assisted

System capacity:
  with heater       6 1/4 pints (3.55 litres)
  without heater    5 1/4 pints (3.0 litres)
Anti-freeze         To Bs 3151 or BS 3152

Solution    Amount of anti-freeze   Commences freezing   Frozen solid
%           Pt    U.S. Pt   Litres   deg C      deg  F       deg C   deg F
25          1 1/2   1.8     0.85     -13        9        -26     -15
33 1/2      2       2.5     1.2      -19        -2       -36     -33
50          3 1/4   3.75    1.8      -6         -33      -48     -53

Water pump
Type	Centrifugal
Drive	V-belt
Overhaul clearances:
Bearing outer race to water seal seating 	0.53 to 0.54 in (13.54 to 13.79 mm)
Impeller vane to pump body		0.020 to 0.030 in (0.51 to 0.76 mm)
Pulley hub face to pump joint face 	3.71 to 3.73 in (94.3 to 94.8 mm)

Pressure cap:
  Early cars		7 lb/sq in (0.49 kg/cm2)
  Up to 1974            13 lb/sq in (0.91 kg/cm2)
  1974 on (to ECE 15)   15 lb/sq in (1.05 kg/cm2)
Thermostat:
Type		Bellows or wax
Opening temperatures:
  Standard              82'C(180'F)
  Cold climate          88'C(188'F)
  Hot climates          74'C or 77'C (165'F or 170'F)
  1976 on               88'C(188'F)

Fan belt tension        1/4 in (13 mm) deflection on longest run

Torque wrench settings       lbf ft         Nm
Water pump                  14 to 18      19 to 25
Thermostat cover            6 to 9        8 to 12
Temperature gauge sender    16            22