SERVICE
INSTRUCTIONS
FOR
COMPOUND
FEED
SYSTEM
591C
CLASS
MACHINES
Servicing instructions for
59ID
Gass Machines also apply
to
the
59IC
Gass with
the
exception
of
the following
special instructions.
NEEDLE
BAR
FRAME
DRIVING
LINKAGE
ADJUSTMENT
1.
Set
machine
feed
to
zero.
2. Adjust cranks A and B to position shown in Fig. 34. i.e. Pin
of
crank Bis approximately 7.45mm from bottom
surface
of
the
bed.
3. Adjust eccentric stud C shown in Fig.35 to a mean position, i.e. when slot is in a vertical direction.
4.
Gamp
eccentric stud C in this position.
7.45tnm
Fig.
34
I
CRANK
A
ECCENTRIC
STUD
C
CRANK
B
Fig.
35
5. Remove compound feed fittings (throat plate and feed dog) and replace
with a conventional throat plate (with needle hole) Fig.36.
6. Position needle
bar
frame assembly to center needle into hole
of
throat
plate and tighten pinch screw D.
23
PINCH
SCREW
D
NEEDLE
BAR
FRAME
ASSEMBLY
THROAT
PLATE
(CONVENTIONAL)
Fig.
36
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