Centinel System – Repair Manual – 016-005   Flywheel

Use dial indicator gauge (1), Part Number 3376050, or equivalent, and dial gauge attachment (2), Part Number 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 of the flywheel bore.

Use the compressor drive or barring device to rotate the crankshaft one complete revolution (360-degrees).

Measure the bore runout.

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.

Install the flywheel and inspect the bore runout again.

Replace the flywheel if the runout does
not meet specifications.

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

Push the flywheel forward to remove the crankshaft end thrust.

Use the compressor drive or barring device 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:

WARNING  Batteries can emit explosive gases. To reduce the possibility of personal injury, always ventilate the compartment before servicing the batteries. To reduce the possibility of arcing, remove the negative (-) battery cable first and attach the negative (-) battery cable last.

WARNING  This assembly weighs 23 kg [50 lb] or more. To reduce the possibility of personal injury, use a hoist or get assistance to lift this assembly.

• Disconnect the batteries or air starter to prevent accidental engine starting.
• Remove the transmission, clutch, and all related components. See the equipment manufacturer’s instructions.

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

Use two M6 x 1.5 guide studs to prevent the flywheel from rotating. Remove two capscrews and install the guide studs.

Use a hoist, two t-handles, and a lifting sling. Install the tee-handles. Remove the remaining ten capscrews. Remove the flywheel.

Use a soft faced mallet to tap the flywheel from the crankshaft, if necessary. Damage to the clutch surface can occur if a hard faced hammer is used.

Remove the pilot bearing spacer from the rear of the crankshaft.

Use a mandrel and hammer to remove the pilot bearing from the flywheel.

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

WARNING  When using solvents, acids, or alkaline materials for cleaning, follow the manufacturer’s recommendations for use. Wear goggles and protective clothing to reduce the possibility of personal injury.

WARNING  Wear appropriate eye and face protection when using compressed air. Flying debris and dirt can cause personal injury.

Use a wire brush to clean the crankshaft pilot bore.

Use a wire brush to clean the flywheel pilot bore.

Clean with steam or solvent.

Dry with compressed air.

Inspect for nicks or burrs.

Use a fine crocus cloth to remove small nicks and burrs.

WARNING  Do not use a cracked or resurfaced flywheel. These can break, causing serious personal injury or property damage.

Use the crack detection kit, Part Number 3375432, to check for cracks in the flywheel. Follow the instructions provided with the kit.

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.
Refer to Procedure 016-008 (Flywheel Ring Gear) in Section 16.

Inspect the pilot bearing spacer for cracks or damage, replace if necessary.

Install the pilot bearing spacer into the rear of the crankshaft with the spacer lip oriented outward.

NOTE: A small amount of clean Lubriplate™ 105 multi-purpose lubricant, or its equivalent, can be used to help keep the pilot bearing spacer in position until the flywheel is assembled.

CAUTION  The flywheel mounting capscrews must be a minimum of SAE Grade 8 with rolled threads. Use identical replacements to avoid possible flywheel failure resulting in personal injury or property damage.

Lubricate the threads and underneath the heads of the capscrews with clean 15W-40 oil. Allow the excess oil to drip off the parts. Do
not lubricate the threads of 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.

Use two M6 x 1.5 guide studs during assembly.

Install the flywheel. The flywheel
must be firmly against the crankshaft.

Install the ten capscrews.

Remove the t-handles and the guide studs.

Install the remaining two capscrews into the holes from which the guide studs were removed.

Tighten the capscrews in two steps, use the sequence shown.

Use a mandrel and hammer to install the pilot bearing.

The pilot bearing must be installed even with the pilot bore surface.

WARNING  This assembly weighs 23 kg [50 lb] or more. To reduce the possibility of personal injury, use a hoist or get assistance to lift this assembly.

WARNING  Batteries can emit explosive gases. To reduce the possibility of personal injury, always ventilate the compartment before servicing the batteries. To reduce the possibility of arcing, remove the negative (-) battery cable first and attach the negative (-) battery cable last.

• Perform the bore runout check and face runout check located in this procedure.
• Install the clutch discs, pressure plate, transmission, and driveline, if equipped, in reverse order of removal. See the manufacturer’s instructions.
• Align the universal joints on each end of the driveshaft to prevent vibration.
• Connect batteries and air starter.
• Start the engine and check the operation of the equipment.