Replacing the Universal Joints

Overview

The following procedures describe the replacement of the universal joints of the telescopic axis as an example. The steps for the Telescopic Axis Double are similar.

Replacing the Upper Universal Joint

Step	Action
1	Remove the telescopic axis as described in Replacing the Telescopic Axis.
2	Remove the two mounting screws (1) and remove the universal joint from the upper tube (2).
3	Attach the new universal joint to the upper tube.
4	Insert and tighten the two screws into the universal joint. Verify that the locating pin in the lower universal joint is in alignment with the screw M6 of the upper universal joint and the larger bore of the upper tube. Use the high strength retaining compound Loctite 648 for this purpose. Tightening torque: For M6: 7 Nm (62 lbf-in) For M5: 4 Nm (35.4 lbf-in) For further information, refer to Telescopic Axis. NOTE: Tightening torque when using the Telescopic Axis Double: For M6: 5 Nm (44 lbf-in) For M5: 3.5 Nm (31 lbf-in) For further information, refer to Detail Drawing of the Telescopic Axis Double.

Replacing the Lower Universal Joint

Step	Action
1	Remove the telescopic axis as described in Replacing the Telescopic Axis.
2	Remove the three screws (3) at the top of the lower universal joint and pull off the joint from the footbridge.
3	Attach the new universal joint to the footbridge.
4	Insert and tighten the three screws into the universal joint. Verify that the locating pin in the lower universal joint is in alignment with the screw M6 of the upper universal joint and the larger bore of the upper tube. Use the high strength retaining compound Loctite 648 for this purpose. Tightening torque: 1 Nm (8.9 lbf-in) NOTE: Apply the high strength retaining compound Loctite 648 into the tapped holes as opposed to applying it to the screws. For further information, refer to Telescopic Axis. NOTE: Tightening torque when using the Telescopic Axis Double: 0.8 Nm (7.1 lbf-in) For further information, refer to Detail Drawing of the Telescopic Axis Double.