Solenoid And Bail Removal; Solenoid And Bail Replacement - IBM System/34 Maintenance Manual

25-540 SOLENOID AND BAIL REMOVAL
(MACHINES WITH TAPER PIN
BLOCK
0).
25-545 SOLENOID AND BAIL REPLACEMENT
(MACHINES WITH TAPER PIN
BLOCK
0)
1. Remove the diskette drive (see paragraph 25-130). 1. Install the solenoid about four turns clockwise into
the casting.
2. Disconnect the drive motor power connector.
3.
4.
DANGER
Voltage is still present at the power connector
when the solenoid and bail are disconnected
and power is on.
Remove the cover assembly (see paragraph
25-420).
Insert a strip of clean paper between the heads to
prevent the head surfaces from touching.
5. Remove the solenoid leads
e
from the taper pin
terminal block
G.
(Remember the cable path for
the replacement procedure.)
6.
7.
Remove the bail return spring
G.
Remove the mounting screw
CD
and the bail
G.
(This pulls the solenoid plunger out of the
solenoid. Be careful not to damage the plated
surface of the plunger.)
8. Remove the plunger from the bail.
9. Loosen the solenoid locking screw
e.
10. Remove the head load solenoid by turning it
counterclockwise.
20
2. Install the plunger to bail. (Be careful not to
damage the plated surface of the plunger.)
3. While inserting the plunger into the solenoid,
reinstall the bail and the mounting screw
e.
Ensure that the bail is under the tab
0
of the
carriage arm.
4.
5.
6.
7.
25-540
Reinstall the bail return spring
G.
Carefully place and connect the solenoid leads
e
to the taper pin terminal block
G.
Set Power to I (operator panel).
Go to 25-530, step 6.
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