Borg Warner (Kysor) K26RA Fan Clutch

p3 mm 20.03
  1. Disconnect the batteries at the negative terminals. Drain all air from the air system.
  2. Measure the distance from the back surface of the fan clutch retaining plate to the forward-most edge of the fan belt pulley. See Fig. , Ref. A.

    Note: With the fan clutch engaged, measure the distance at A ; measure it again with the fan clutch disengaged.

    • Bearing Housing

    • Retaining Plate

    • Fan Pulley

    • Air Inlet (from solenoid valve)

    • Air Cylinder

    • Fan

    Fig. 1, Kysor K26RA Fan Clutch Lining Wear Check

  3. Disconnect the line from the air inlet of the air cylinder. Connect a shop air hose to the inlet.
  4. Apply a minimum of 100 psi (690 kPa) air pressure to the air cylinder—the bearing housing will move backwards, disengaging the clutch. Again, measure the distance from the back surface of the retaining plate to the forward-most edge of the fan belt pulley.
  5. Compare the two measurements; if the difference between the two measurements exceeds 0.150 inches (3.8 mm), the clutch lining is worn and must be replaced. See  of the vehicle Workshop Manual for clutch lining replacement instructions.
  6. Release the air pressure, then disconnect the shop hose from the air inlet of the air cylinder. Connect the vehicle air hose to the inlet.
  7. Connect the battery cables. Start the engine.
Note:
Parent topic: Fan Clutch Check (Noise Emission Control)
Document Number: 0000110986
Manual Publication Date: 2024-05-15
Topic Publication Date: 2024-11-22