Centinel System – Repair Manual – 001-069   Crankshaft Tone Wheel

• Remove the vibration damper.
  Refer to Procedure 001-052 in Section 1.
• Remove the crankshaft adapter.
  Refer to Procedure 001-016 in Section 1.
• Remove the lower front gear cover.
  Refer to Procedure 001-080 in Section 1.

Use care
not to damage the crankshaft gear when removing the tone wheel.

With a suitable pry bar or a lady’s foot, remove the tone wheel from the crankshaft and discard the tone wheel.

Inspect the crankshaft, crankshaft gear, and the tone wheel alignment dowel for damage and replace components as necessary.

Inspect the machined surfaces for scratches or nicks.

Inspect the tone wheel alignment dowel hole for damage. If the dowel hole or the area surrounding the dowel hole has been damaged, the crankshaft
must be replaced.

Use a crocus cloth to remove scratches or nicks. If scratches or nicks can be felt with a fingernail after the crankshaft has been polished with the crocus cloth, the crankshaft
must be replaced.

Inspect the crankshaft gear for excessive wear or damage.

If any teeth on the crankshaft gear are missing, chipped, or pitted, the crankshaft gear
must be replaced.

WARNING  To reduce the possibility of personal injury, wear protective gloves when handling parts that have been heated.

Heat the tone wheel for 2 hours at 177°C [350°F] before attempting the installation.

The tone wheel
must be installed so the face labeled “FRONT” faces away from the crankshaft gear.

The tone wheel is keyed to the crankshaft with a dowel. The tone wheel alignment dowel slot on the inside diameter of the tone wheel
must align with the crankshaft pin for proper installation.

The tone wheel
must be installed within 30 seconds after being removed from the oven.

Install the tone wheel so the slot on the inside diameter of the tone wheel aligns with the tone wheel alignment pin.

Hold the tone wheel in position for approximately 90 seconds to allow the shrink fit to properly hold the components.

Check the installation by attempting to insert a [0.25 mm] 0.010-inch feeler gauge between the crankshaft gear and the tone wheel at 4 locations approximately 90 degrees apart. If the feeler gauge can be inserted, the tone wheel
must be removed and replaced.

• Install the lower front gear cover.
  Refer to Procedure 001-080 in Section 1.
• Install the crankshaft adapter.
  Refer to Procedure 001-016 in Section 1.
• Install the vibration damper.
  Refer to Procedure 001-052 in Section 1.