ISC, ISCe, QSC8.3, ISL, ISLe3, ISLe4 and QSL9 Engines – 009-052   Drive Belt, Refrigerant Compressor

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.

• Disconnect the battery.
  Refer to Procedure 013-009 (Battery Cables and Connections) in Section 13 of the ISBe, ISB, and QSB (Common Rail Fuel System) Service Manual, Bulletin 4021271,
  or Procedure 013-009 (Battery Cables and Connections) in Section 13 of the ISC, ISCe, QSC8.3, ISL, ISLe3, ISLe4 and QSL9 Engines Troubleshooting and Repair Manual, Bulletin 4021418.
• Remove the belt guard, if equipped.
  Refer to Procedure 008-001 (Belt Guard) in Section 8 of the ISBe, ISB, and QSB (Common Rail Fuel System) Service Manual, Bulletin 4021271,
  or Procedure 008-001 (Belt Guard) in Section 8 of the ISC, ISCe, QSC8.3, ISL, ISLe3, ISLe4 and QSL9 Engines Troubleshooting and Repair Manual, Bulletin 4021418.

CAUTION  The belt tensioner is spring-loaded and must be pivoted away from the drive belt. Pivoting in the wrong direction can result in damage to the belt tensioner.

CAUTION  Applying excessive force in the opposite direction of windup or after the tensioner has been wound to the positive stop can cause the tensioner arm to crack or break.

CAUTION  The use of a socket extension is not recommended because it can cause axial twisting damage to the belt tensioner.

Lift the tensioner to remove the refrigerant compressor drive belt.

NOTE: If a socket extension is necessary, support the head of the ratchet with one hand to prevent the belt tensioner arm from unintended loading.

Inspect the belt for:

• Cracks
• Glazing
• Tears or cuts
• Hardening
• Excessive wear.

Check the belt for damage.

Transverse (across the belt width) cracks are acceptable.

Longitudinal (direction of the belt length) cracks that intersect with transverse cracks are
not acceptable.

If the belt is frayed or has any piece of material missing, the belt is unacceptable and
must be replaced.

CAUTION  The belt tensioner is spring-loaded and must be pivoted away from the drive belt. Pivoting in the wrong direction can result in damage to the belt tensioner.

Lift and hold the belt tensioner.

Install the drive belt and release the tensioner.

NOTE: Due to the availability of different belt run configurations, this procedure is meant to be generic. Reference the application manufacturer’s manuals for the correct belt run.

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.

• Install the belt guard, if equipped.
  Refer to Procedure 008-001 (Belt Guard) in Section 8 of the ISBe, ISB, and QSB (Common Rail Fuel System) Service Manual, Bulletin 4021271,
  or Procedure 008-001 (Belt Guard) in Section 8 of the ISC, ISCe, QSC8.3, ISL, ISLe3, ISLe4 and QSL9 Engines Troubleshooting and Repair Manual, Bulletin 4021418.
• Connect the battery.
  Refer to Procedure 013-009 (Battery Cables and Connections) in Section 13 of the ISBe, ISB, and QSB (Common Rail Fuel System) Service Manual, Bulletin 4021271,
  or Procedure 013-009 (Battery Cables and Connections) in Section 13 of the ISC, ISCe, QSC8.3, ISL, ISLe3, ISLe4 and QSL9 Engines Troubleshooting and Repair Manual, Bulletin 4021418.