Remove and Install the Coolant Hose - Frame 6L

Replace a liquid coolant hose with kit catalog number 20L-GH10-B1 or 20L-GH30-B1. Follow these steps to remove an install the cooling hose.
  1. Review the product advisories in Before You Begin.
  2. Remove power from the system.
  3. By using the heat-exchanger manufacturer’s instructions, remove the coolant hose (A) from the heat exchanger.
  4. To provide resistance only, place and hold a backup hexagonal wrench (B) on the drive-side fitting (1 5/8 in. flats).
  5. IMPORTANT: Do not use the backup wrench on the fitting locknut.
  6. By using a second hexagonal wrench (C), loosen the swivel nut (1 1/2 in. flats) on the heat-exchanger side hose and remove the coolant hose.
    example of the frame 6L liquid cooled drive coolant hose connections
  7. Lubricate the inside of the new cooling hose end (D) with a small amount of liquid soap.
  8. TIP: To be sure the hose connects to the coupling completely, make the connection by using one continuous downward motion.
  9. Place the coupling (E) on a solid surface and, in one firm motion, push the hose end (D) onto the coupling until the hose end is flush against the plastic bushing.
    example of how to install the frame 6L liquid cooled drive coolant hose on the coupling
  10. Install the coolant hose in the reverse order of removal.
  11. Apply a final torque of 69…77 N•m (51.0…56.7 lb•ft) to the hose fitting.
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