Applies to: N4+

Clean or exchange the coupling of the cooling liquid tank

Watch the video

YouTube video – When viewing this video, personal data is sent to YouTube, LLC, USA. Privacy statement

Cleaning the coupling of the cooling liquid tank

  1. Clean the cooling liquid tank and remove the cooling liquid filter.

  2. Unscrew the cap [1] of the coupling by hand. Do not unscrew the nut [6] that fixates the coupling to the tank.
  3. Remove the valve spring [2], ball [3] and valve seat [4] from the socket [5] and the cap [1] of the coupling.

    4.  

    1. Cap of the coupling
    2. Valve spring
    3. Ball
    4. Valve seat
    5. Socket of the coupling
    6. Fixing nut (do not unscrew during cleaning)
  4. Rinse the disassembled components of the coupling under running water and dry them with a cloth.
  5. Place the valve seat in the socket of the coupling.
  6. Place the spring in the cap of the coupling.
  7. Position the ball in the valve seat and screw the cap onto the socket of the coupling.

  8. Install the cooling liquid filter and refill the tank.

Exchanging the coupling of the cooling liquid tank

  1. Empty the cooling liquid tank.
  2. While holding the coupling of the cooling liquid tank from the outside with one hand, unscrew the filter of the cooling liquid tank with the other hand.
  3. Put the filter aside.
  4. While holding the coupling of the cooling liquid tank from the outside with one hand, unscrew the nut with which the cooling liquid tank is fixated with the other hand.

    5.  

  5. Push the coupling out of the tank.

    6.  

  6. Thoroughly clean the cooling liquid tank. Especially clean the sealing surface around the opening for the coupling. Otherwise the cooling liquid tank may leak.

  1. Insert the spare coupling into the designated opening as shown in the following figure.

    2. NOTICE! Damage to the coupling due to premature tightening of the filter

  2. Screw down the nut onto the coupling by hand. Do not tighten the nut completely yet.

  3. Reinsert the cooling liquid tank until the tank is properly attached to the machine.
  4. Pull the cooling liquid tank out of the machine again.
  5. Fully tighten the nut and screw down the filter onto the coupling by hand.
  6. Fill new cooling liquid into the tank.
  7. Reinsert the cooling liquid tank until the tank is properly attached to the machine.