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Note:
Valves must not be reworked. Only grinding-in (lapping) is permitted.
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Dimension
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Inlet valve
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Exhaust valve
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a = ømm
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26.8 ... 27.0
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29.8 ... 30.0
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b = ømm
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5.96 ... 5.97
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5.94 ... 5.95
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c = mm
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104.84 ... 105.34
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103.64 ... 104.14
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α = <°
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45
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45
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Worn sodium-cooled exhaust valves must be treated as follows before disposal:
Saw the valves into two sections with a metal saw at a point between the centre of the valve stem and the valve head. The valves must not come into contact with water when this is done. Then throw the valves into a bucket of water (not more than ten at a time) and step back, because a sudden chemical reaction occurs when the sodium filling burns. After this treatment the valves can be disposed of in the normal way.
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