23
Setting:
Note:
23.0.2
Adjustment:
23.1
.2
.3
.4
.5
.6
.7
.8
.9
Oil
check
valve
There should be a
clearance
of
1.0
mm
between
actuating rod 2 of the centrifugal
governor and push rod 3 ofthe oilcheck valve (Fig.23.0.2).
If
the
machine
has
been
in operation for a longer time, it is
recommended
to
fill
the
gear-
case
with abt. 130 c.c. of Pfaff
sewing
machine
oil No.
280-1-120144
having a
mean
viscosityof22.0 mm^/sat 40°Cand a densityof0.865 g/cm^at 15°Cbeforethe gearcase
cover
is closed.
The
two oil
pads,
which
are
available
under
Nos.
91-168383-05
and
91-168384-05,
should
be
replaced
too.
1
p
b
23.0.1
Loosen
screw
1
of
the
oil
check
valve.
Push
actuating
rod 2 to
the
left
as
far
as
it will
go.
Press
push
rod 3 into oil
check
valve 4 until a
resistance
is felt.
Reposition
oil
check
valve
4 until
there
Is a
clearance
of
1.0
mm
between
actuating
rod
2
and
push
rod
3 (Fig. 23.0.2).
In this position tighten
screw
1.
Place
the
oil
pad
in
the
gearcase
so
that
the
vertical fin in
the
gearcase
is positioned in
its
smallest
cutout.
Clean
the
gasket
face on the
gearcase
and
the
gasket
of the
gearcase
cover.
Replace
the
gearcase
cover
and
tighten
screws
crosswise.
Check
this
adjustment
(see
"Setting").
36
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
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