Crankshaft and
Camshaft
Contents
7.
With camshaft in this position, the valve tappets will
remain clear of cam lobes. Lift out camshaft, Fig. 131.
1
Remove Crankshaft and Camshaft . . . . . . . . . . . . . . . . . . . .
Remove Crankshaft . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspect Crankshaft . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspect Camshaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check Compression Release . . . . . . . . . . . . . . . . . . . .
Install Crankshaft and Camshaft . . . . . . . . . . . . . . . . . . . . .
Install Crankshaft . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Install Camshaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Install Crankcase Sump . . . . . . . . . . . . . . . . . . . . . . . .
Adjust Crankshaft End Play . . . . . . . . . . . . . . . . . . . .
Specification Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
53
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54
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55
55
3
2
2
Fig. 131 – Removing Camshaft
1.
2.
Timing gear
Timing mark
3. Camshaft
Remove Crankshaft and
Camshaft
Remove Crankshaft
1.
Before crankshaft can be removed, it is necessary to
remove flywheel, page 15, and connecting rod cap,
page 49.
Before removing crankshaft from engine, remove rust, paint,
or burrs from power take off end of crankshaft. This will
eliminate or reduce chances of damaging oil seal and
crankcase sump bearing.
2.
3.
Rotate crankshaft to position piston at top dead center for
ease of removal.
1.
2.
3.
Drain oil from crankcase.
Remove crankshaft from crankcase.
Remove crankcase cover or sump.
If crankcase cover or sump sticks, tap lightly with soft
hammer on alternate sides near dowel pins, Fig. 130.
Inspect Crankshaft
Table No. 1, page 55 shows reject sizes of various wear points
of the crankshaft. Discard crankshaft if worn smaller than size
shown. Keyways should be checked to be sure they are not
worn or spread. Remove burrs from keyway edges to prevent
scratching bearing. Fig. 132 shows various points to be
checked on crankshaft.
Note: It is not necessary to remove locating pins.
2
1
2
Note: Do not straighten bent crankshafts.
2
3
4
1
2
5
6
Fig. 130 – Removing Crankcase Cover
Fig. 132 – Crankshaft Check Points
1.
Crankcase cover
2. Dowel pin
1.
2.
3.
Threads
4.
5.
6.
Keyway
Crankpin
Timing gear
PTO journal
Mag journal
4.
5.
Tip engine over onto flywheel side of crankcase.
Support engine to prevent end of crankshaft from resting
on workbench.
Check timing gears for chipped or cracked teeth and keyway
for wear. Replace timing gear, if damaged. If timing gear is
chipped or cracked, also check camshaft for damage.
6.
Rotate crankshaft until timing marks are aligned.
GTS 200
53
Crankshaft and Camshaft
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|---|---|
| Tags | Toro GTS 200 |
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| Language | English |
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