Yanmar 3TNV Series Service Manual page 82

Step
1) Remove lubricating oil pump.
14
1) Remove starting motor from flywheel housing
sing.
15
1) Remove flywheel mounting bolt.
2) Remove flywheel.
16
1) Remove flywheel housing.
2) Remove oil seal case with a screwdriver or
17
the like by utilizing grooves on both sides of
oil seal case.
1) Remove oil pan and spacer.
18
1) Remove idle gear shaft, and then remove idle
gear.
2) Remove mounting bolt of thrust bearing
19
through the hole of the camshaft gear.
Remove camshaft assembly.
1) Remove gear case flange.
20
1) Remove lubricating oil strainer.
21
1) Remove crankpin side cap of the connecting
rod.
While turning crankshaft, place piston in the
bottom dead center (BDC).
22
Removal Parts
4. Disassembly, Inspection and Reassembly of Engines
1) Carefully protect the ring gear from damage
mage.
1) Carefully protect the oil seal from damage.
1) Put the cylinder block with the attaching
surface of the cylinder head facing down.
2) Carefully protect the combustion surface of
the cylinder block from damage.
3) For indirect injection system, be careful to the
possibility of the tapped to drop off when the
cylinder block is turned upside down,
because the tappet is cylindrical in shape.
1) Turn the cylinder block aside and carefully
prevent tappet from jamming on the cam.
2) Preheat camshaft gear and camshaft
assembly to 180° 200° which are shrink
fitted, before removing them.
1) Before extracting piston, remove carbon
deposits from the upper wall of the cylinder
using fine sandpaper, while taking care not to
damage the inner surface of the cylinder.
2) Make sure than cap No. of connecting rod
agrees with cylinder No.
3) Take care not to let crankpin metal fall when
removing connecting rod crankpin side cap.
67
Remarks