Installation, Operation and Maintenance Manual
MAN-02-05-62-0742-EN Rev. 0
December 2019
Dismounting BHH
1. Prepare the actuator as stated in “Preparations
before Dismounting” on Section 10.1.1.
2. Dismount the yoke.
3. Dismount the bottom cover. Use special tools or
2 pins fitting the holes in the bottom part. Turn
counter-clockwise to loosen the bottom part.
4. The spline shaft including the thrust gage is
dismounted.
5. The spline shaft is dismounted by knocking the
position shaft with a nylon hammer. The spline
shaft and the housing are to be marked.
6. The spline shaft is dismounted.
7. For BHH 1000 to 32000 there might be a spline
connection to be removed as well. Otherwise
remove screws or Seeger ring (locking ring).
8. The top part is dismounted. Use special tools or 2
pins fitting the holes in the top part. Turn clockwise to
loosen the top part.
9. Remove the top part to be able to replace the O-ring.
10. Dismount the piston.
The piston can be dismounted with special tools or
by knocking the bottom with a cylindrical pipe.
Seeger ring
New spline
connection
30
BHH Dismounting
Section 10: BHH Dismounting