Stiga WBE170 - Dismantling and Checking the Camshaft and Counterweight Governor

Release 00 - 11/2018
Engine WBE 170
page 45
Workshop Manual
16.2. Dismantling and checking the camshaft and
counterweight governor
1 - Bring the piston to the TDC (Top Dead Centre).
2 - Open the crank case [
16.1].
3 - Remove the camshaft (7).
4 -
Measure seat (A) of the camshaft, checking
for wear and tear. The value must not be lower
than 13,92 mm.
5 - Measure the cams (IN and EX) on the camshaft,
checking for wear. The value must not be lower
than 27,30 mm (IN) and 27,45 mm (EX).
6 - Check the regular movement of the pressure
reducer (8) and the efciency of the spring (9); the
whole group must always be replaced in the case
of breakage or irregular operation of the pressure
reducer.
7 - Check that the irregolar centrifugal (10) that
are not present ruptures of the lubrication pallets.
8 - Turn the governor’s gears quickly and check that
the counterweights (11) expand correctly, causing
the pin (12) to be moved axially.
16. ENGINE BLOCK - Overhauling internal parts
(IN)
(EX)
7
8
9
A
12
11
10
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