Type Belt Idler ~Ulley; Type Belt Idler Pulley Pivot Assembly; Without Clevis (Old Style); With Clevis (New Style) - IBM System/32 Introduction And Maintenance Manual

4.2.17 Type Belt Idler Pulley
Removal
1.
Remove the type belt (4.2.13).
2. Remove the cover
Pl
by removing the screw
and washer.
3.
Remove-the spacer (if installed).
4.
Remove the pulley
m .
CAUTION
Cleaning fluid and transport cleaners contain
trichlorenthane that will melt plastic parts. Use
only isopropyl alcohol (PN 2200200) to clean
the belt drive and idler pulleys.
Replacement
1.
2.
3.
4.
5.
Install the pulley
B
on the motor shaft.
If a spacer was removed, install and align it
on the shaft.
Install the cover
a :
a. Ensure that the pin
iii
engages the hole
in the pulley, and that the hole in the
cover aligns with the motor shaft
m .
b. Install the washer and screw.
To verify that the pulley can be moved up
and down on the shaft, hold the outside rim
of the pulley from opposite sides and lift
evenly; the pulley should move up and down
freely.
Install the type belt (4.2.13).
~
®
Spacer (if r
installed)
4.2.18 Type Belt Idler Pulley Pivot
Assembly
4.2.18.1 Without Clevis (Old Style)
Removal
1.
Remove the printer covers (4.2.1)
steps 1 through 3.
2. Remove the print unit (4.2.10).
3.
4.
Remove the ribbon cassette (4.2.28) and
type belt (4.2.13).
Remove the type belt idler pulley (4.2.17).
Note:
Do not lose the plastic spacer on
the bottom of the pulley.
5. CAUTION
6.
7.
8.
9.
The type belt release lever is under spring
pressure.
Remove type belt release lever
m .
I
DANGER
Spring
II
compression is high; use
caution when removing.
Remove the compression spring from
the stud
II .
Remove the bottom C-clip
m
that holds
the pivot shaft to the mounting block.
Remove the pivot shaft
II
through the
top.
Remove the pivot assembly through the
hole in the top of the print unit.
Replacement
Install the plastic spacer on the shaft and replace
in the reverse order of removal.
4-38
4.2.18.2 With Clevis (New Style)
Adjustment
Loosen screw
II
and adjust eccentric
13
to
prevent the idler pulley
a
from touching the
pulley cover
m.
While turning the pulley cover
with the belt installed, you should see the belt
riding on the front roller bearing
II .