Yanmar 1GM User Manual page 92

86
a. Pry the old seal from the gcarcasc with a large
screwdriver. Work carefully to prevent damage to
the gearcase seal surface,
b. Clean the seal recess in the cover with solvent and
blow
it
dry with compressed air.
c. Apply gasket scaler 10 the periphery of the seal.
d. Position a new seal in the cover recess with its open
end facing the inside of the gcarcasc. Drive the seal
into place with a suitably sized seal driver or socket .
13, If crankshaft bearing replacement is necessary, pro-
ceed as follows:
a. Refer 10 Chapter Seven to remove the governor
shaft from liming gcarcasc.
b. Pry the seal from the gearcasc with a large screw-
driver. Work carefully to prevent damage to the
gcarcasc seal surface.
c. Drive or press out the bearing (Figur e 54) . Force
the bearing toward the inside of the gearcase.
d . Clean the seal and bearing recesses in the cover
with solvent and blow them dry with compressed
air.
e. Drive or press in a new bearing until the bearing
scats in the recess in the gearcase .
f. Apply gasket sealer to the periphery of the seal .
CHAPTER FIVE
g. Position a new seal in the cover recess with its open
end facing the inside of the gcarcasc. Drive the seal
into place with a suitably sized seal driver or socket.
h. Refer to Chapter Seven to reinstall the governor
shaft.
14. Reverse the removal proced ure to reinstall the timing
gearcase. Tighten the gcarcasc retaining screws to the
specification in Ta b le 2.
LUBRICATION SYSTE.\.
Refer to Chapter Two for lubrication system operation,
diagrams and oil pressure test.
Oil Pump
The engine oil pump is mounted on the front (timing
gear) side of the cylinder block (Fig ure 48).
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