18
Correct
setting:
18.0.2
18.1
18.2
18.3
18.4
18.5
18.6
Hook
lubrication
Afterthe machine has run at
full
speed
forabout ten seconds, a finetrace ofoilshould
appear opposite each hookon a piece of paper placed vertically behindthem.
18.0.1
Checkthe
oil
level
at the
oil
sightglass and, ifnecessary, top upthe reservoir
until
the
oil
level
Isin line
with
the uppermark. Use
oil
with
a
viscosity
of16.0
mm^/s
at 50°Cand a
density
of 0.87
kg/dm^.
We
recommend
Pfaff
sewing
machine
oil
No.
280-1-120
144.
Turn
in
regulating
screws
1and2ofthe
oil
check
valve
as
far
as
they
will
go,
and
then
back
out by half a turn.
Turn on the master switch and let the machine run about one minute.
Place a pieceofpaper
vertically
behindthe hooks.Then checktosee ifa finetrace of
oil
hasappeared onthepaper
opposite
each
hook
raceway.
Iftoomuchoilis
emitted,
turnin
regulating
screw1fortherighthookor2forthe left
hooksomewhat.Iftoo
little
oilIsemitted, turn outthe respectivescrewa
little.
Checkthisadjustment(see "Correctsetting").
26
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