36
Repair instructions
4
6
Lower the cylinder head into a bath of water at 70°C
and open the tap.
Check that the knob on the reduction valve of the
proof testing equipment is screwed out.
5
Connect the hose from the proof testing equipment to
the air connection plate.
7
Screw in the reduction valve knob to give a pressure
of 50 kPa (0.5 kp/cm
2
) on the pressure gauge. Main-
tain this pressure for 1 min.
8
Then raise the pressure to 150 kPa (1.5 kp/cm
2
).
Lock the reduction valve knob with the lock ring and
shut the tap off.
Check after one or two minutes whether the pressure
has fallen and if any air bubbles come out of the water
bath.
If there is any air leakage from the copper sleeves for
the injectors, this should be attended to in accordance
with “Copper sleeves for injectors, replacement” and
“Cleaning seats for copper sleeves” on pages 46 to
48.
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