Pfaff 467 User Manual

Push the second oil tube leading to shut-off valve V through the hole in the bedplate from
below, lead it
past the backside of the driving belt und pull it out of the aperture on the front
of the arm standard. Push it onto the left-hand nipple of the oil reservoir. Both oil tubes are
secured in position by clips. To prevent the shut-off valve oil tube chafing against the lower
drive shaft, it is
secured in place on the bedplate reinforcing rib by means of a clip (Fig. 45).
Insert the oil reservoir and secure it in place by a screw. Fill the reservoir with oil, using an
oiler for this purpose. To prevent air bubbles forming in the tube leading to shut-off valve V,
hold its end up until it is filled with oil completely. Then push it cautiously onto the nipple of the
shut-off valve. The oil tube connecting shut-off valve V with oil flow regulating valve R
(Fig. 25) is first pushed onto valve R and its opposite end then passed from left to right through
the borehole in the gear case.
Oil is conducted from oil flow regulating valve R through a bent copper tube to oil retainer
ring LR whence it drips through a small hole into the groove in the bottom of the sewing hook.
The oil is pressed through an oil hole in the sewing hook into the hook raceway by centrifugal
force.
When filling the hook oil reservoir or topping it up, take care that no air bubbles remain in the
oil tube leading to shut-off valve V because this would interrupt the flow of oil.
If an air bubble should nevertheless have formed ahead of shut-off valve V, tilt the machine
over so that it stands on its face. Lightly tap against the oil tube to move the air bubble to the
bend in the tube, then let the machine down again so the air bubble rises to the surface in the
oil reservoir.
If the above-mentioned procedure should not produce the desired result, pull the left end of
the oil tube off the nipple and let the air bubble rise to the surface.
An air bubble which may have formed in the left section of the oil line can be removed by
opening oil flow regulating valve R.
In
order to prevent lint and dirt from entering the shut-off and oil flow regulating valve s,
a 6-inch-long wick will be inserted into the lower end of the oil tube conducting oil from
the oil reservoir to the shut-off valve on all machines assigned Serial No. 7740000 and up.
The oil flow to the sewing hook can be regulated to suit the type of work being performed by
the machine. A more lavish supply of oil is needed, for instance, for seaming whole rolls of
cloth at top speed than is required for short runs and intermittent operation.
The flow of oil to the sewing hook is decreased by turning screw w on valve R clockwise
(Fig. 25), and increased by turning it counter-clockwise.
The correct setting for normal operation can be determined by a simple test, as follows:
Remove needle plate and feed dog and place a sheet of paper over the opening. Run the
machine for about ten seconds at top speed. The setting is correct if two thin lines of spray
oil about inch apart appear on the paper.
If the hook lubrication system should not work properly, particles of dressing and lint may
have obstructed the fine oilhole in the rim of the sewing hook. To remedy this condition,
remove the dirt with a piece of steel wire about .01", or 0.25 mm, thick. If this method does
not work, remove the sewing hook and push a piece of elastic steel wire through the oilhole.
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From the library of: Superior Sewing Machine & Supply LLC

Pfaff 467 Specifications

General

Brand	Pfaff
Model	467
Category	Sewing Machine
Language	English