Lower Limit Stop; Upper Limit Stop - IBM System/32 Introduction And Maintenance Manual

3.2.19 Lower Limit Stop
Adjustment
1.
2.
Turn power off at the operator control
panel.
Remove the 33FD from the machine (3.2.5).
Remove the leadscrew dust cover (if installed)
(3.2.10.1 ).
3. Loosen clamp screw
iii .
Make sure that
the leadscrew is 80° to 90° below track 0
in a downward direction. Wheels must be
in position shown
a .
4. Position the limit stop so the projection
on the lower limit stop is in front of and
against the projection on the carriage.
5. Adjust for 0.012 inch to 0.018 inch (0.3
mm to 0.46 mm) between top of pro-
jection on the lower limit stop and bot-
tom of the carriage.
t
I
I
6. CAUTION
Do not overtighten the screw.
Tighten the screw. Replace the leadscrew
dust cover (if previously removed) (3.2.10.1).
7. Insta" the 33FD in the machine (3.2.5).
TNl: SN31-6230 to SY31-0373-4 (8 May 78)
3-20
3.2.20 Upper Limit Stop
Adjustment
1.
2.
3.
4.
5.
6.
7.
Turn power off at the operator control
panel.
Remove the 33FD from the machine (3.2.5).
Remove the leadscrew dust cover (if installed)
(3.2.10.1 ).
Loosen clamp screw and slide the stop
II
up as far as possible.
Starting at track 0, rotate the stepper
motor wheel 19 complete revolutions to
track 76. The wheels must be aligned
as shown at
~
.
Position the upper limit stop so its projec-
tion is behind the head carriage assembly,
and the clamping screw faces directly
back as shown in
m
below.
CAUTION
Do not overtighten the screw.
,Tighten the clamping screw while main-
taining 0.030 inch ± 0.005 inch (0.76 mm
± 0.13 mm) between upper limit stop and
top of the head carriage assembly.
t
Back View
Replace the leadscrew dust cover (if previously
removed) (3.2.10.1).
Insta" the 33FD in the machine (3.2.5).