M11 Series – Service Manual – 016-005   Flywheel

Remove the vehicle driveline and transmission. Refer to the manufacturer’s instructions.

Remove the clutch discs and pressure plate.

Hold the flywheel to prevent rotation.

Install M10 – 1.50 x 40 puller capscrews (at points 1 and 2).

Remove capscrew (3) and install guide pin, Part No. 3376696.

NOTE: If a clutch is used in the equipment, the threads in the clutch pressure
plate mounting capscrew holes can be metric or standard. Be sure to use the correct capscrews.

Determine the capscrew thread design and size, and install two “t-handles”
in the flywheel (at points 4 and 5).

Remove the remaining seven flywheel mounting capscrews.

WARNING  This component weighs 23 kg [50 lb] or more. To avoid personal injury, use a hoist or get assistance to lift the component.

Tighten capscrews (1 and 2) in alternating sequence to loosen the flywheel.

Remove the flywheel from the guide pin.

WARNING  When using a steam cleaner, wear protective clothing, as well as safety glasses or a face shield. Hot steam can cause serious personal injury.

Use a wire brush to clean the crankshaft pilot bore.

Use steam or solvent to clean the flywheel. Dry with compressed air.

Inspect for nicks or burrs.

Use Scotch-Brite™ 7448, Part No. 3823258 or equivalent, to remove
small nicks and burrs.

WARNING  Do not use a cracked flywheel. A cracked flywheel can break and cause serious personal injury or property damage.

Inspect the flywheel for cracks.

Inspect the flywheel ring gear teeth for cracks and chips.

If the ring gear teeth are cracked or broken, the ring gear

must be replaced.

Use a new pilot bearing when installing a new or rebuilt clutch.

Remove the pilot bearing with a mandrel and hammer.

Clean the pilot bore with Scotch-Brite 7448, Part No. 3823258 or equivalent.

Install the pilot bearing with a mandrel and hammer.

The pilot bearing

must be installed flush with the pilot
bore surface.

WARNING  This component weighs 23 kg [50 lb] or more. To avoid personal injury, use a hoist or get assistance to lift the component.

Install guide pin, Part No. 3376696, in the crankshaft flange.

Install the flywheel on the guide pin.

Install the seven capscrews.

Remove the “T-handles” and the guide pin.

Install the remaining capscrew in the hole.

Tighten the capscrews in a star pattern.

Bore Runout

Use dial indicator gauge (1), Part No. 3376050 or equivalent, and dial
gauge attachment (2), Part No. ST-1325, to inspect the flywheel bore (3)
and face (4) runout.

Install the attachment to the flywheel housing.

Install the gauge on the attachment.

Install the contact tip of the indicator against the inside diameter
of the flywheel bore.

Use the accessory driveshaft to rotate the crankshaft one complete
revolution (360 degrees).

The total indicator reading

must not exceed 0.127 mm [0.0050 in].

WARNING  This component weighs 23 kg [50 lb] or more. To avoid personal injury, use a hoist or get assistance to lift the component.

If the total indicator reading is greater than the specification:

• Remove the flywheel.

• Inspect the flywheel mounting surface for dirt or damage.

• Inspect the crankshaft for dirt or damage.

Refer to the M11 Series Engine Shop Manual, Bulletin No. 3666075 to replace the crankshaft.

WARNING  This component weighs 23 kg [50 lb] or more. To avoid personal injury, use a hoist or get assistance to lift the component.

• Install the flywheel, and inspect the bore runout again.

WARNING  This component weighs 23 kg [50 lb] or more. To avoid personal injury, use a hoist or get assistance to lift the component.

• Replace the flywheel if the runout does

  not meet specifications.

Face Runout

Install the contact tip of the indicator against the flywheel face as
close to the outside diameter as possible to inspect the face (4) run out.

Push the flywheel forward to remove the crankshaft end thrust.

Use the accessory driveshaft to rotate the crankshaft one complete
revolution (360 degrees) while keeping the crankshaft end thrust pushed forward.

The total indicator reading

must not exceed the following specifications.

Install the clutch discs, pressure plate, transmission, and driveline, if equipped, in reverse order of removal. Refer to the manufacturer’s instructions.

Align the universal joints on each end of the driveshaft to prevent vibration.