Uploader: Albie
Country: Italy
Uploaded: May 20, 2018
Price: Free

Please, verify you are not robot to load rest of pages

efka variostop - pdf download

for 480 series machines
Thread puiier/trimmer
Service Manual
PFAFF INDUSTRIEMASCHINEN GMBH KAISERSLAUTERN
From the library of: Superior Sewing Machine & Supply LLC
Instructions for adjusting subcl. -900 thread trimmers on Pffafff
480 series machines
Important note
Never use a C-clamp on the needle bar of Pfaff 480-900 machines because this would
damage its special coating.
The following tools, gauges and other equipment are required for adjusting the subcl. -300
thread trimmer of Pfaff 480 series machines.
1 set of screwdrivers with blades from 2 to 10 mm wide
1 set of alien keys from 1.5 to 6.0 mm
1 set of open-ended spanners from 7 to 14 mm
1 metal rule
1 5-mm-thick adjusting pin No. 13-030 341-05
1 adjusting gauge No. 61-111 642-19
1 circuit tester
sewing thread
From the library of: Superior Sewing Machine & Supply LLC
1
Preparations for adjustment
1.1
Bearing plate in sewing head
1.1.1
Take out both face cover screws and remove the cover.
Note:
The bearing plate in the sewing head has five holes In it for blocking the
machine at different positions of the needle bar (Fig. 1.0.1). After positioning
the needle bar, push the adjusting pin into the appropriate hole so that
it enters the recess in the disc behind it, thus blocking the machine.

%
1.0.1
From the library of: Superior Sewing Machine & Supply LLC
13 12 14 11 10 9
1 = interlocking latch
10 = micro switch lever **
2 = control cam
11 = engaging lever
3 = roller lever
12 = trip lever
4 = locking spring
13 = engaging solenoid
5 = synchronizer
14 = micro switch, special version,
subcl. -913/03 **
6 = carbon brush holder**
7 = thread cat<^ier engaging shaft
15 = connecting rod
8 = tension release lever
16 = thread catcher
9 = micro switch **
17 = trimming knife
* On machines equipped with Quick-Electronic-Stop motor or Efka-Variostop motor
- synchronizer on balance wheel.
** On machines equipped with lever-operated Stop motor only.
From the library of: Superior Sewing Machine & Supply LLC
Preliminary adjustment of controi cam
When the needle bar is at top dead center (pin in hole 5), the highest
point of the cam lobe should be positioned exactly below the tip of
interlocking latch 1 and the right-hand side of the cam should be in line
with the right-hand side of the interlocking latch.
Correct
setting:
3.0.2
m
3.1
Take out the two screws 18 and remove both the washer and the locking
spring.
3.2
3.3
Also loosen screws 20 of the collar.
3.4
Strip the rod connecting the control unit and the trimming mechanism.
3.5
Loosen screws 19 of control cam 2.
Bring the needle bar to top dead center and block the machine by inserting
the pin in hole 5 of the bearing plate.
3.6
3.7
3.8
3.9
3.10
Turn control cam 2 in its normal direction of rotation until the highest point
of the cam lobe is positioned exactly below the tip of interlocking latch 1.
Move control cam 2 laterally on its shaft until the right-hand side of Its lobe
Is In line with the right-hand side of the Interlocking latch.
In this position, tighten one of the two screws 19.
Push the collar up against the control cam and tighten one of its screws.
Pull the pin out of hole 5 and securely tighten the second screw 20 of the
collar.
3.11
Check this adjustment (see "Correct setting").
From the library of: Superior Sewing Machine & Supply LLC
Roller lever
Correct
With the machine in needle rise position (pin In hoie 4), the roller of roller