New Style Motor - IBM System/32 Introduction And Maintenance Manual

Table of Contents

Advertisement

2.2.3.2 New Style Motor
Removal
CAUTION
Do not rotate the disk spindle counterclockwise;
head damage can occur.
1.
2.
3.
4.
Turn power off at the operator control
panel. After the power is sequenced down,
turn the mainline power off at the back of
the machine.
Lock the actuator with the actuator lock
m
by moving the handle to ON.
Remove the belt guard by loosening the
two screws
II
and lifting it off.
Loosen the two screws
II
holding the
spindle locking arm, and slide the locking
arm toward the disk spindle.
5.
Turn the motor pulley clockwise until the
stud on the disk spindle sits in the slot in
the locking arm.
Back View
6.
7.
8.
Tighten the screws on the spindle locking
arm.
Lift the motor to release tension on the
belt, and remove the belt
m .
Remove the motor wires from 0 ETB 1
ri-
terminal 1 (blue wire), terminal 2 (white
wire), and terminal 3 (two green/yellow
wires).
9.
Remove the brake wires from OETB1
Ii -
terminal
5
(black wire) and terminal
6
(yellow wire).
10.
Remove the cable straps
m
(if present) that
hold the motor, brake, and ac cables.
11.
Release the motor tension spring
II
by
lifting it off the motor mounting bracket.
,--III
Front View
2-16
TNL: SN31-0487 to SY31-0373-4 (25 Nov 77)
12.
Remove the nut, lock washer, flat washer
and insulating washer
m
on the motor
pivot at the back of the subframe.
Note:
The motor mounting plates form part
of the motor assembly and should not be
removed.
Note:
Keep the two plastic bushings
D
(one located in the motor pivot hole
in the subframe, and one located in the
motor mounting plate).
13.
Pivot the motor toward the disk enclosure.
Slide the motor away from the main frame
and lift it upward to clear the pivot and
subframe.
II

Advertisement

Table of Contents
loading

Table of Contents