IBM 3274 51C Maintenance Information page 267

•
F.3.1.2 Collet/Flat Spring Replacement (Figure F-21)
Warning: Too much pressure or binding on the flat spring
Gwill
damage the spring.
1. Reinstall the collet/flat spring assembly
G .
2. Reinstall the collet pressure roll
CD
and actuator
roll
CD.
3.
Turn the collet actuator rod
9
down against the
spring.
4.
Reinstall the operator knob
G
in the open position.
o
Pressure Pa~
e
Read/Write
Head
Collet Actuator
Rod
Figure F·21 (Part 1 of 2). Collet/Flat Spring Removal
5. Reinstall the screw and nut Othat attach the oper-
ator knob to the collet actuator rod
g.
Push the
operator knob and the collet actuator rod
e '
together until there is a maximum of O.l-mm (0.004-
inch) end play
G
between the operator knob
G
and the diskette guide
E) .
(See Part 2 of Fig-
ure F-21.) Tighten the screw.
6.
Reinstall the bail return spring
0,
the bail
0
and
the bail pivot rod
G .
Place the bail
0
on the
collet actuator rodO. Ensure that the spring
G
is in the correct position. Place the bail
0
under
the head load arm. Place the bail pivot rod
Q
in the
groove, and tighten the bail mounting screw
Q) .
e
Head Load
Arm
G
Collet/Flat Spring
Assembly
Screw
G
Bail Actuator
Cable Eyelet
GOperator
Knob
Pressure
Roll
. . . . . . . . . . . . "l
~, ~~ 5P
'~
o
Collet Actuator
Roll
Lever
Lever Screw
Appendix F. IBM 51TD Diskette Drive Maintenance F-23