Siemens BTC-BR Manual Página 129

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Technical Product Manual
Fault analysis and repairs 1318
3 Removing and fitting housing
Section 3: Removing and fitting housing • Edition 12/2005
TU00-1318-0200302 © Siemens VDO Trading GmbH Section 3 3–37
3.9.1 Removing drive parts
Procedure
Unhook the guide rod (6) from the frame bracket and pull it out of the stylus
carriage guide holes.
Unhook springs (5) and (9).
Remove stylus holders (1) and (2).
Remove the stop spring (25) for driver 1 and the stop spring (26) for driver 2.
Remove spur gear (13) and parts (23), (28) and (29) from the frame plate (30).
Remove any material overlapping the sides of the frame stud (24).
Then remove the adjustment (12), the lever (11) and the bracket (10).
Using a screwdriver pull the bracket (10) out of the holes.
3.9.2 Fitting stylus holder
Procedure
Insert the socket (3) of the stylus holder (2) into the aperture (4) of the stylus
holder (1).
Put both stylus holders onto the stud (27) together.
Fit guide rod (6).
3.9.3 Fitting switching and drive parts
Procedure
Hook the bracket (10) into the adjustment holes (12) and (11).
Use the soldering iron to provide axial protection on the frame stud (24).
Put the eccentric wheel (22), spur gear (16), close tolerance washer (15), con-
necting link (21), close tolerance washer (20), pressure spring (19) 0.12 x 1.9 x
13 or (29) 0.15 x 1.8 x 7 and, depending on the
version, close tolerance washer (18) onto the relevant frame stud and secure
them with the retaining washer (17) or locking sleeve (28).
Remark
With some units the front (11.1) of the lever (11) is welded to the stop spring
(25).
With some units the front (13.1) of the spur gear (13) is welded to the stop
spring (26).
Should they need to be repaired release them and replace both parts.
Note
Ensure that the distance carriage is correctly positioned on the distance
cam.
When fitting the stylus holder (2) ensure that the lug (8) is located in the fork
(7).
Remark
Measure dimension "X" on the bracket and if necessary reduce to 5.2 mm.
Close tolerance washer (15) when installing the gear lever (20), length
7.3mm not
necessary (from 01.87).
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