IBM 29 CARD PUNCH Maintenance Manual page 57

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Register a card. Space to column 80.
Hold escape wheel as belav. Punch a
@
key. Watch b r the timing of the card
to card skip os controlled by the jl
contoct.
Refer to the machine wiring diogmm to check
or
r e d j u s t the program cam contoct timings.
/
-w/
@ I
/
At column 86, form the support straps of
To obtoin proper moke time, position
the
contact for.
contact bracket wuth program index
(a) 0.015" to 0.025" rnse of the NO contact
at column 86 for a 0 015' to 0.025'
.r
# I
.
from
ik
support strap.
:t rtotionory strop
(b) 0.020" minimum oir gop of the N C contact
8nvn1 u r
ruppumo
strap.
0.035" to 0.055" air gap(Yl contoct only)
Form operot~ng strop.
This w t l l result in the proper make timing
of the #2 contoct.
Position lever bracket or adiustable
cam for # I contact arm just dropped off
cam at column 88-1/3 (meosure on ercope
Lever Bracket
At column
1:
/
(o)
Adjust the tension on #2 contact operated
strap for 0.005" to 0.025" rise of the
N C
contact from
ik
support.
(b) Turn the lever bracket for 0.015" clearance
(#2
contoct only) of the arm to the contoct pad.
#2 Contact
(outer)
Figure 4-38. Program Cam Contact Adjustment

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