Cub Cadet Yanmar 3TNV72 - Manual (Page 142)

ENGINE
TNV IDI Service Manual 6-43
Cylinder Block
1. Using a feeler gauge, measure the connecting
rod side clearance (Figure 6-50). See
Connecting Rod on page 6-12 for the standard
limit. If the measurement is out of specification,
replace the crankshaft, connecting rod, or both.
Figure 6-50
IMPORTANT
Mark the connecting rod caps and
connecting rods so the caps and connecting
rods stay together.
2. Remove the bearing cap. Do not remove the
bearing inserts at this time.
3. Wipe oil from the bearing insert and crankshaft
journal surfaces.
4. Place a piece of PLASTIGAGE ®
(Figure 6-51, (1)) along the full width of the
bearing insert.
Figure 6-51
IMPORTANT
Do not rotate crankshaft when using
PLASTIGAGE. A false reading may result.
5. Reinstall the bearing cap and tighten to
specification. See Special Torque Chart on
page 6-14.
6. Remove the bearing cap.
Figure 6-52
7. Compare the width of the flattened
PLASTIGAGE (Figure 6-52, (1)) to the
graduation marks on the package. The mark
that most closely matches the width of the
flattened PLASTIGAGE will indicate the bearing
oil clearance. Record the measurements. See
Crankshaft on page 6-8.
8. Repeat with the remaining connecting rods.
IMPORTANT
Do not allow the connecting rod to contact
the crankshaft journal during piston
removal. Damage to the bearing journal
may result.
9. Use a wooden dowel against the connecting
rod and tap the piston / connecting rod
assembly out of the cylinder.
10. Mark the cylinder number on the piston and
connecting rod.
0000219
0001898
(1)
0001899
(1)
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