Install Fan And Flywheel; Installing Fan And Mounting Hardware To Flywheel; Torquing Flywheel - Kohler Courage SV470-600 Service Manual

Install Fan and Flywheel

WARNING: Damaging Crankshaft and
Flywheel can Cause Personal Injury!
Using improper procedures to install the flywheel can
crack or damage the crankshaft and/or flywheel. This
not only causes extensive engine damage, but can
also cause personal injury, since broken fragments
could be thrown from the engine. Always observe and
use the following precautions and procedures when
installing the flywheel.
NOTE: Before installing the flywheel make sure the
crankshaft taper and flywheel hub are clean,
dry and completely free of lubricants. The
presence of lubricants can cause the flywheel
to be over stressed and damaged when the
mounting screw is torqued to specification.
NOTE: Make sure the flywheel key is installed
properly in the keyway. The flywheel can
become cracked or damaged if the key is not
properly installed.
NOTE: Always use a flywheel strap wrench or
flywheel holding tool to hold the flywheel
when tightening the flywheel fastener. Do not
use any type of bar or wedge between the
cooling fins or flywheel ring gear, as these
parts could become cracked or damaged.
1. Install the woodruff key into the crankshaft
keyway. Make sure that the key is fully seated and
parallel with the shaft taper.
2. Install the flywheel onto the crankshaft aligning
the keyway with the key. Be careful not to shift or
unseat the key.
3. Position the fan onto the flywheel, so the locating
pins drop into the corresponding recesses.
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4. Install the fan mounting plate onto the fan,
aligning the four cutouts, followed by the heavy
flat washer and hex. flange screw. See Figure
10-45.
Figure 10-45. Installing Fan and Mounting
Hardware to Flywheel.
5. Use a flywheel strap wrench or holding tool to
hold the flywheel. Torque the hex. flange screw to
66.5 N·m (588 in. lb.). See Figure 10-46.
Figure 10-46. Torquing Flywheel.
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Section 10
Reassembly
10
10.13