CAC Gasoline Engine Maintenance And Servicing Manual
24
Installation：
——Check gear tooth for wear, pitting or scratch.
——Install camshaft semicircular key，protrusion should
be 1.64—2.11mm.
——Install camshaft gear on camshaft with new
bolt though cushion block，new bolt should be
pre-pasted and tightened to 52—60Nm.——Check
whether crankshaft is positioned at compression TDC.
3.Crankshaft gear
Removal：
——Block crankshaft and remove belt.
——Pull out crankshaft gear with puller or 2 large
screwdrivers，then remove semicircular key.
Installation：
——Check gear tooth for wear, pitting or scratch.
——Install semicircular key，protrusion should be
1.392—1.739mm.
——Install shim with curved face side forward.
——Install crankshaft gear with boss side forward, and
then press crankshaft gear onto boss using a assistant
pulley and pulley bolt.
【7】、Camshaft oil seal removal and installation
Removal：
——Remove camshaft gear.
——Note the direction of oil seal installation, pry out oil
seal from the oil seal hole in cylinder head，be sure not
damage the oil seal hole.
Installation：
——Clean the oil seal hole in cylinder head ,apply clean
engine oil on oil seal edge and camshaft oil seal journal，
install oil seal on oil seal journal carefully，push oil seal
in perpendicularly into place with a appropriate cushion
block and used camshaft gear bolt. An appropriate socket
wrench may be used to push oil seal into place.
Fig.17
Fig.18
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