IBM 5280 Maintenance Information Manual page 141

345
HEAD GAP ADJUSTMENT
1. Go to 344, step 1.
2. Loosen the bail lever screw
II
just enough so that
the bail lever mean be adjusted.
CAUTION
(3150) Do not let the head hit the pressure pad or the
head could be damaged. (51TO) Do not let the heads hit
each other or the heads could be damaged.
I
3. (3150) Move the bail lever slowly until the head load
arm fJjust touches the head
D.
(51TO) Move
the bail lever until the two heads just touch each
other.
I
4. Note the location of the marks
II
on the bail lever
relative to the bail alignment edge
II.
5. (3150) Turn the bail lever approximately one and one
half marks clockwise to provide the 3 to 4 millimeters
(0.12 to 0.16 inches) between the head and the head
load arm. (51 TO) turn the bail lever approximately
3/4 of a mark to provide the 2 to 3 millimeters (0.08
to 0.12 inches) gap between the head surfaces.
6. Tighten the bail lever screw
II.
7. Go to 343, step 2.
345
Page of SY31-0602-o
As updated 5 June 1981
By TNL SN20-9529
Head Load Solenoid and Bail 21