ThyssenKrupp Mini gearless DAF270, Operating Manual

Page: 48 / 76

O
PERATING
M
ANUAL
7. M
AINTENANCE
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