81
Oleomatic Governor (Fig. 34)
A plastic sleeve (A) is actuated by two centrifugal weights
(D), the plastic sleeve moving along the centre spindle;
the spindle (B) being drilled through the centre to allow
oil to be drawn in under the head of the sleeve.
This gives a low pressure oil damping effect which
eliminates any slight governor fluctuation.
i)
CRANK CASE BREATHER
All four stroke engines are fitted with a crankcase breather,
the body of which contains a small celeron valve
(Fig 35).
Two body types are made, identified by the position of
the oil drain hole :
Fig 35
A.
Vertical type
B.
Horizontal type
Check that valve moves freely and that seat is not
damaged.
On earlier types the valve was of a metal spring type (Fig
36); this spring should be very resilient and sticking should
not occur.
Some vertical crankshaft engines were also fitted with a
filter between the breather cover and body (Fig 37).
Fig. 34
Fig. 35
Fig. 36
Fig. 37
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