ISC, ISCe, QSC8.3, ISL, ISLe3, ISLe4 and QSL9 Engines – 001-051   Vibration Damper, Rubber

• Disconnect the battery. Refer to Procedure 013-009 in Section 13.
• Remove the belt guard, if equipped. Refer to Procedure 008-001 in Section 8.
• Remove the fan and fan shroud, if necessary.
• Remove the drive belt. Refer to Procedure 008-002 in Section 8.

NOTE: Some engines use four damper capscrews while others use five damper capscrews.

Remove the vibration damper.

Check the index lines (A) on the damper hub (B) and the inertia member (C). If the lines are more than 1.59 mm [1/16 in] out of alignment, replace the damper.

Inspect the vibration damper hub (B) for cracks. Replace the damper if the hub is cracked.

Inspect the rubber member for deterioration. If pieces of rubber are missing or if the elastic member is more than 3.18 mm [1/8 in] below the metal surface, replace the damper.

NOTE: Also look for forward movement of the damper ring on the hub. Replace the damper if any movement is detected.

NOTE: Some engines use four damper capscrews while others use five damper capscrews.

Install the vibration damper.

Tighten the capscrews in a star pattern.

• Install the drive belt. Refer to Procedure 008-002 in Section 8.
• Install the fan and fan shroud, if removed.
• Install the belt guard, if equipped. Refer to Procedure 008-001 in Section 8.
• Connect the battery. Refer to Procedure 013-009 in Section 13.
• Start the engine and check for proper operation.