Care And Maintenance; Cleaning - Pfaff 3734 -12 Instruction Manual

11

Care and maintenance

Cleaning ..................................................... daily, several times if in continuous operation
Oiling the hook ................................................................................ daily, before operation
Checking the oil levels .................................................................... daily, before operation
Lubricating the bevel gears ............................................................................. once a year
11

Cleaning

.01
Clean the hook, hook compartment and toothed wheel 3 daily, several times if in continuous use.
2
3
Fig. 11 - 01
These maintenance intervals are calculated for the average running time of a sin-
gle shift operation. If the machine is operated more than this, shorter intervals
are recommended.
Care and maintenance
Switch the machine off!
Danger of injury if the machine
is started accidentally!
Bring the needle bar to its highest
1
position.
Open the post cap and remove the bobbin
case cap and the bobbin.
Unscrew hook gib 1.
Turn the handwheel until the point of bob-
bin case 2 penetrates into the groove of
the hook race approx. 5 mm.
Remove bobbin case 2.
Clean the hook race with paraffin.
When inserting the bobbin case 2, ensure
that the horn of the bobbin
case 2 engages in the groove of the
needle plate.
Screw hook gib 1 back on and close the
post cap.
Clean the gearwheel of the feed band
daily, several times if in continuous use
(see arrow).
Switch the machine off!
Danger of injury if the machine
is started accidentally!
11 - 1