ThyssenKrupp TW63, Operating Manual

Page: 41 / 60

O
PERATING
M
ANUAL
TW63
M
AINTENANCE
/
SERVICE
ThyssenKrupp Aufzugswerke GmbH
7.6 Traction sheave replacement
Disassembly:

Switch off the power to the installation; secure the car and counterweight
in position.

Ease load on traction sheave; lay down ropes.

Secure the traction sheave to the lifting gear with a rope or chain.

Undo the screws on the mounting plate for the traction sheave and loosely
screw them in the outer circle of holes of the traction sheave into the
traction sheave hub (see Fig. below, Item 2).

Place a spacer (approximately 5 – 10 mm thick and slightly smaller than
the hub hole diameter) between the shaft end and the disc.

By tightening the screws diagonally and evenly, remove the traction
sheave from the shaft
Installation:

Clean shaft end and traction sheave bore. Under no circumstances,
are the dimensions of the feather key, groove, shaft or drilled hole to be
changed. There must be no visible damage on the contact surfaces.

Do not apply grease or oil to the shaft and bore.

Place the new traction sheave on the conical shaft end of the worm
wheel shaft.

Align the locations of the feather key and groove in relation to one
another.

Push the traction sheave onto the worm wheel shaft.

Screw on a disc with supplied screws (microencapsulated) and detent
edged washers on the inner circle of holes of the disc. Tighten the
screws evenly and alternately.
Danger: If mounted incorrectly, the traction sheave can come loose.

Comply with the bolt tightness of 8.8 and tightening torque = 150 Nm !
See table 9 in the Appendix.
1 Traction sheave
2 Hole for pressure screw
3 Mounting
plate
4 Securing bolt
1
2
3
4
2
Fig. 7.6.1
41 09-2012