Lever Installation; Ball-And-Socket-Joint; Removal; Installation - ABB PME120-AI Service Instruction

PME120-AI / PME120-AN (Contrac) ELECTRICAL ROTARY ACTUATOR | SEI/PME120-EN REV. A

Lever installation

NOTICE
Make sure that the shaft surface and the shaft bore in the
ever are clean and free of grease or any other lubricant.
1. Put the appropriate key into the groove in the shaft.
2. Use an expanding screw to spread the lever seat.
3. Push a counterpart (soft metal) into the lever gap in order to
protect the expanding screw thread.
4. Push the lever onto the shaft until it is nearly in the same
position as it was before.
5. Put the lever clamping bolt into the lever and tighten the nut
with a torque of 23 Nm (17 lbf-ft).

Ball-and-socket-joint

Figure 7: Ball-and-socket-joint
Figure 8: Use of draw-off tool
In some case it may be useful to detach the linkage bar from the
ball-and-socket-joint, however, it is not absolutely necessary.
Note
The ball-and-socket joint may be mounted / removed with the
lever mounted on the shaft or with dismounted lever. If the lever
remains mounted on the shaft, move it into a position, where
you get free access from the rear lever side.

Removal

1. Pull the cotter pin 1 out of the castle nut
2. Screw-off the castle nut.
3. Put an appropriate draw-off tool
(see Figure 15 for details); make sure that the
bolt 5
claws
6 grip symmetrically behind the lever and that the
bolt tip is on the joint bolt center.
4. Put a wrench onto the opposite bolt end and turn the bolt
clockwise.
5. Press the joint bolt out of the lever.

Installation

1. Push the bolt of the ball-and-socket joint into the lever hole.
2. Put the crown nut onto the bolt and tighten it with the
required torque of 80 Nm (60 lbf-ft).
3. Secure the crown nut with a new cotter pin.
2 .
3 onto lever 4 and joint
9