Magnet Unit - IBM 1402 Reference Manual

Magnet Unit
Adjustments to the magnet unit are made to
I
ensure
proper armature sealing.
ADJUSTMENTS
l. Remove punch unit from machine.
2. Turn punch camshaft until interposer setup bail
is at lowest limit of travel.
3. Check .004" to .013" clearance between lower
side of armature and latch at both column-1
and column-80 ends of unit. See Figure 3-34.
4. Adjust magnet unit on punch unit to obtain clear-
ance.
a. Loosen magnet unit mounting screws. See
Figure 3-35.
b. Loosen magnet unit adjusting lock nuts and
adjust screws for .004" to .013" clearance be-
tween armature and latch. See Figure 3-34.
I NTERPOSER GUIDE BAR
ADJUSTING SCREWS
1402 PUNCH MAGNETS
VIEWED FROM HOPPER
MAGNET UNIT
The magnet unit locating screws hold magnet
unit against adjusting screws.
c. With interposers centered over their respec-
tive punches, tighten mounting screws and re-
check clearance between armature and latch.
REMOVAL
l. Remove punch unit.
2. Remove stripper assembly.
3. Remove interposer cover. See Figure 3-35.
4. Loosen magnet unit locating screws at each end
of punch unit.
5. Remove four magnet unit mounting screws. Do
not disturb magnet unit adjusting screws. See
Figure 3-35.
6. Lift magnet unit off punch unit.
7. Use a rubber band to keep interposers from
falling out.
MAGNET BAR
ASSEMBLIES
MAGNET UNIT
ADJUSTI NG SCREW
I NTERPOSER GUIDE BAR
CLAMPI NG SCREW
I NTERPOSER COVER
STRIPPER MOUNTING SCREWS
CABLE~:
80 76
72
68
64
60 56 52 48 44
40 36 32 28 24 20 16 12 8 4
79 75 71 67 63 59 55 51 47 43 39 35 31 27 23 19 15 11 7 3
78 74 70
66
62 58 54 50 46 42 38 34 30 26 22
18 14 10 6 2
: } CABLE
77
73 69 65 61 57 53 49 45 41 37 33 29 25 21
17 13 9 5
Figure 3-35.
Punch Unit with Magnet Location Chart
3-30