Replacing the drive unit

Removing the mixer shaft from the drive unit

1

Mixer shaft

2

Shrink disc

3

Output shaft

4

Drive unit

5

Grub screw

6

Hexagon head screw

  1. Propeller blades are removed. See “Attaching the propeller blades”.
  2. Cover cap is removed. See “Mounting the cover cap”.
  3. Align mixer shaft and drive unit horizontally: Position scantlings under the mixer shaft and drive unit. WARNING! Risk of crushing! Prop up the mixer and drive unit in such a way that they will not tip over when dismantled!
  1. Unscrew the grub screw.
  2. Loosen the hexagon head screws on the shrink disc.
  3. Remove the mixer shaft from the output shaft.
  4. Remove the shrink disc from the mixer shaft.
Removing the mixer shaft
Removing the mixer shaft

Mounting the mixer shaft on the drive unit

  1. Place the shrink disc on the upper end (tapered end) of the mixer shaft and slide up as far as it will go.
  2. Place the mixer shaft on the output shaft and slide up as far as it will go.
  3. Turn the mixer shaft until the grub screw’s take-up opening is exactly above the groove on the output shaft.
  4. Screw in the grub screw until hand-tight.
  5. Tighten the shrink disc’s hexagon head screws in a crosswise manner until hand-tight.
  6. Tighten hexagon head screws crosswise. For torque, see “Shrink disc tightening torques”.
  7. Ensure that the mixer shaft is securely attached.
  1. Drive unit is replaced. Install the mixer and put it into service.
Mounting the mixer shaft
Mounting the mixer shaft