Baby Lock Regalia BLRG20, Руководство по обслуживанию

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Page 19
Section 4: Checking and Securing Flats and Screws
(Continued)
The Regalia has been designed using flats and special screws to help prevent loop lift timing from slipping,
except at the hook. If the hook cannot slip, then something would have to break when something goes wrong.
The hook is designed to be adjusted without removing the front cover.
First check the torque specifications chart on page 5,
then check the following locations, making sure that
the first screw of a timed component has been fixed
firmly on the respective flat on the shaft:
1. The hook-shaft timing pulley
(2.5 mm handle hex) .
2. The Pitman crank
(5 mm L hex tool)
3. The take-up lever driving link (
(3 mm handle hex tool )
4 . The main shaft timing pulley
(2.5 mm handle hex tool)
NOTE: The screws are generally positioned
120 degrees apart. When the first screw in
Direction of Motion (DOM) (Position 1) has
been located and tightened on a flat, the
second screw is then tightened, compounding
the tightness of the first screw, thus securing
and assuring that timing will not change.
NOTE: The brass counterweight position is
critical both axially and rotationally.
NOTE: It is important to check that the brass
counterweight tightening procedure did
not create a tight arm shaft condition. If so,
readjust the counterweight again until there is
no tightness and minimal-to-no end-play. This
is checked by rotating the shaft and checking a
few times through a full 360° rotation of
the shaft.
Counterweight Timing
The counterweight has a slit and can be adjusted. It is
not set on a flat for timing. Set counterweight timing
as follows:
• First Pitman screw straight up, pitman straight
edge vertical and aligned parallel with the bearing
retainer strap .
• The counterweight slit is straight up with screws on
top facing straight out .
• Tighten very firmly with an L hex tool.
Pitman Crank 1
st
screw
1
st
screw Main
Shaft Timing
Pulley on flat
Take-up Lever Driving Link 1
st
screw
Flat
Counter weight
slit straight up
(vertical)
Pitman straight edge
straight up (vertical)
Counter Weight Slit
straight up (vertical)