OPERATING MANUAL 7. MAINTENANCE
ThyssenKrupp Aufzugswerke GmbH 48 Issue 06.2004
• Remove load from traction sheave; discard ropes; secure traction sheave
with lifting device
• Loosen screws on mounting disc of traction sheave; put screws in outer
hole circle of disk (fig. 16, pos. 3) and loosely screw in traction sheave hub
(holes pos. 8).
• Place a washer approx. 5 – 10mm thick between shaft end and disc.
• Tighten screws uniformly and remove traction sheave from motor shaft.
• Put traction sheave down using lifting device.
• Remove mounting disc from traction sheave
Assembly:
• Clean shaft end and traction sheave holes; never make any dimensional
changes in featherkey, groove, shaft or drilled holes
• Never grease or oil shaft and holes
• Carefully fit new traction sheave to conical end of motor shaft
• Bring position of featherkey and groove in line. Push traction sheave on
motor shaft
• Assemble traction sheave using already available screws and tighten in
accordance with tightening torque.
• Disassemble screws and disc
• Check fit cover of traction sheave holes (the pressed on bearing surface of
the traction sheave must project the front shaft at least 1.5 mm)
• Fit and screw disc to motor shaft using new micro-encapsulated screws
and detent edged washers
• Tighten fastening screws using torque wrench and bring to required torque
of 195 Nm in several operations.
• Replace rope; remove securing devices at car and ropes
• Screw on rope fixing beam
Attention: the traction sheave may work loose if assembled improperly.
When the traction sheave is to be replaced, enclosed new micro-
encapsulated screws must be used.
Observe screw strength and tightening torque!
Note: only use micro-encapsulated screws twice, since otherwise the
adhesive force is no longer effective
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