ThyssenKrupp TW160 Operating Manual page 76

Operating manual
TW160 drive
Sequence:
Check ease of movement of the armature base plate
1. After a longer period of use, it can occur that the rubber disc settles between
the armature base plate and brake shoe (Fig. 8.6-1, item 6). This means that
the pretension of the armature base plate becomes insufficient.
 To restore the pretension, the lock nuts (Fig. 8.6-1, Item 8) between the brake
shoe and armature base plate must be adjusted.
2. Correct pretension is achieved when the armature base plate can be turned on
the armature screw despite light suction.
Check the stroke.
1. Align a dial gauge on the brake shoe at the height of the centre of the brake disc.
2. Switch the drive to operate the brake shoes while checking the stroke of the
brake shoes. The path should be 0.3 mm + 0.1 mm.
Adjust the stroke
1. In the event of deviations, loosen the lock nuts (Fig. 8.6-1, Item 9)
2. Adjust the anchor bolt with an Allen key. On opening the brakes, make sure that
both brake shoes work with the same stroke.
3. Then secure the settings with the lock nut 
Set the initial tension of the springs
A correct setting of the initial tension is only possible within the framework of a
deceleration measurement. In doing so, do not exceed the maximum initial tension
distance of 20.4 mm.
If brake test switches (SA3,SA3.1 and SA15) are present, these must be checked or
adjusted after brake adjusting. 
thyssenkrupp Aufzugswerke
Chapter 9.2.2
76
Servicing and Maintenance
Version 03/2019