Centronics 101AL Technical Manual page 99

PIN FEED UNIT
12. Slide driving shaft (HF-98) to the right through two pin
feed units and out of FF chassis (right) of printer.
13. To reassemble reverse procedure.
5.2.8.3 Adjustments
A. Pin Feed Holders and Paper Guide Plates (Left and Right)
1. Clearance between pin feed holders (HG-1, 20) and spring
activated paper guide plates (HG-14, 21) should be 0.065
0.06510.015-inch (1.65+0.4 mm). Adjust clearance by
bending right angle metal stopper located just above top
hinge pin hole of pin feed holders, left and right.
B. Pin Feed Belt Units
1. For proper tension of pin feed belt units iHG-19) adjust
as they are in place on the guide bar (HF-7
and driving
shaft (HF-98) as follows:
a.
Remove screws (HG-11) to remove plastic belt paper
guide (HG-10).
With a 1.5 millimeter (0.059-in.) allen-wrench, loosen
set-screws (HG-2) on paper feed holders (HG-1, 20).
Rotate eccentric stop sleeve (HG-7). Test for flexibility
of pin feed timing belt units (HG-19) so that they are
under similar tension on each side, (not too flexible
or too tight). Tighten set-screws.
When paper is inserted on pin feed timing belt units
(HG), left and right, the difference between the pins in
the left and right horizontal plane should be minimal.
Adjust as follows:
(1) Loosen fixing knob stoppers (HG-18) at top of left
and right pin feed holders (HG-1, 20).
(2) Slide pin feed units together in middle of paper
shaft.
(3) Open both paper guide plates (HG-14, 21).
(4) Loosen two allen-head set-screws (HG-6) on each
pin feed driving pulley (HG-5) with a 2 millimeter
(0.078-in.) allen-wrench.
5-2/7