O
PERATING
M
ANUAL
DAF380
M
AINTENANCE
/S
ERVICE
ThyssenKrupp Aufzugswerke GmbH
7.7
Replacing the traction sheave
Disassembly:
•
Disconnect the power from the installation and secure it against
inadvertent activation
•
Secure the car and counterweight
•
Remove traction sheave cover
•
Ease load on traction sheave; lay down cables
•
Secure traction sheave with lifting gear
•
Measure the dimension of the pretensioned compression springs on the
brake and note down the value
•
Relieve pressure on compression springs by unscrewing the tightening
screws until the traction sheave is free
•
Unscrew the disc (Fig. 2.1, item 2) on the motor shaft
•
Lightly screw in the disc with screws in the outer circle of holes of the
disc at the traction sheave hub
•
Place a spacer of approx. 5 to 10 mm thickness between the shaft end
and the traction sheave. The dimension of the spacer must be such that
it does not protrude beyond the front shaft face.
•
By tightening the screws diagonally and evenly, remove the traction
sheave from the shaft.
•
Use lifting gear to take off the traction sheave.
Installation:
•
Clean shaft end and traction sheave bore; do not under any
circumstances alter dimensions of feather key, groove, shaft or bore.
•
Do not apply grease or oil to the shaft and bore.
•
Carefully mount new traction sheave with lifting gear on tapered shaft
end of the motor shaft.
•
Align the locations of the feather key and groove in relation to one
another.
•
Fit traction sheave on motor shaft, taking care with the brake blocks!
(operate the brake release lever if required)
•
Screw on a disc on the inner circle of holes on the motor shaft.
New microencapsulated screws
with tightness 8.8 are to be used.
Place detent edged washers under the screws to secure against
involuntary loosening.
•
Use a torque wrench to tighten screws evenly and alternately clockwise
in a number of revolutions to the prescribed torque. See Table 9.
•
Check the lateral alignment of the brake linings in relation to the brake
disc support. In the case of misalignment, disassemble brake shoe.
Adjust the spacer washers on the brake shoe pin to align the linings to
the centre of the brake surface. (Washer thickness = 0.5 mm.)
•
Set the press-on force of the springs, brake block stroke 0.3 mm and
brake test switches. See Chapter 7.
40
08-2011
Summary of Contents for DAF 380
Page 1: ...ThyssenKrupp Aufzugswerke Operating Manual Drive DAF380...
Page 2: ......
Page 4: ......
Page 53: ......
Page 54: ......
Page 55: ......
Page 56: ......
Page 57: ......
Page 58: ......
Page 59: ......
Page 60: ......
Page 61: ......
Page 62: ......
Page 63: ......
Page 64: ......
Page 66: ......