Cub Cadet Yanmar 3TNV72 - Manual (Page 140)

ENGINE
TNV IDI Service Manual 6-41
Cylinder Block
Removal of Camshaft
1. Before removing the camshaft, check the
camshaft end play.
• Method A: Install a dial indicator
(Figure 6-46, (1)) on the cylinder block. Move
the camshaft and gear (Figure 6-46, (2)) in
and out to measure the end play. Record the
measurement. See Camshaft on page 6-7 for
the service limit.
Figure 6-46
• Method B: Use a feeler gauge to measure the
clearance between the thrust plate
(Figure 6-47, (1)) and front camshaft bearing
(Figure 6-47, (2)). Record the measurement.
See Thrust Bearing on page 6-9 for the service
limit.
Figure 6-47
2. Remove two bolts (Figure 6-48, (3)) retaining
the camshaft thrust plate (Figure 6-48, (1)).
Figure 6-48
3. Extract the tappets (Figure 6-48, (5)) through
the top of the cylinder block. Mark the tappets
so they can be reinstalled in the same location.
4. Slowly pull the camshaft (Figure 6-48, (2))
assembly out of the engine being careful not to
damage the front camshaft bushing.
5. Remove the camshaft gear (Figure 6-48, (4))
only if the gear or camshaft require
replacement. Use a knife-edge puller and a
press to remove the gear. The gear is a
shrink-fit and will need to be heated to
356° - 392°F (180° - 200°C) to remove.
0002191
(1)
(2)
(1)
(2)
0001710B
0002186
(4)
(3)
(1)
(2)
(5)
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