Governor points
RESTRICTED
2.
Altitude
Knob
c.L.l.
B 43-5
Fig. 32
pg. 66
if a
teat bullds up on the governor
remove with
crange
stick and check
positions of
arc across the points. At low
speed he arc should
be across the top center of
the
points; at
higher
speeds 1: moves
down
closer to the center of the
points.
The points should make contact at the top.
This
is obtained by stoning the lever
point to
about a four-degree
The
angle.
use of
a cigarette
paper to clean the
points at each 15-hour check will prolong the life
of the points.
CAUTION: Any adjustment of the governor points
will change the calibration of the altitude knob.
Always
check altitude knob and make necessary ad-
justments.
NOTE: Do not remove. outer spring case in dis-
assembly or maintenance.
It is not necessary to
remove outer spring and case to calibrate alti-
tude knob.
Altitude knob will be
calibrated as
per C.L. 1. 43-5.
Each
time the altitude knob
is
calibrated
a new
piece of
paper, cut to fit, will
be placed on the outer sheil of the altitude
knob.
1.
Turn on telescope motor and take maximum and
minimum tachometer readings.
a.
The following readings are correct:
M - 3:
Minimum speed !!? Plus or minus 1/2.
Maximum
M-6:
Shift
Low
low:
101 / 1011/2
Med.
rast
246 plus or minus 1/2.
Shift on high:
Low
246 plus or minus 1/2-
Med.: 348 - 350
Fast
2. If the altitude knob is out of adjustment and
if you
do not receive the above reading, proceed a
as follows:
a.
Adjust high
altitude,
inner spring first.
Turn counter-clockwise to decrease disc speed and
clockwise
to increase disc speed.
Before attempt-
ing to adjust case, make certain that set screws
are
loosened.
153