Defects and malfunctions
RESTRICTED
DEFECTS
AND MAL-
FUNCTIONS
8.
8.
10.
1.
12.
Eccentric cam and dovetail.
Cross trail mechanism or iinkage.
Cradle differential lever.
Telescope light.
AES--if installed.
A,
Stabilizer brush.
Moves back and
forth across neutral sector.
2.
Moves
off
continuously in one direction to
upper or. lower segments.)
a.
Dirt
(bearings) .
b.
Sector fouled or shorted.
C.
d.
Broken lead to sector.
slip ring brush corroded or bent.
e.
Unbalanced gyro.
f.
Dragging clutch.
g.
h.
Slow, sluggish
gyro.
Siow
servo motor.
3. Adjustment - clean brushes with carbon tet.
and
check for grounds and shorts.
B. Failure of clutches to release.
1.
Corrosion.
2. Dirt.
• Adjustment-keep clean and dry.
C.
Sluggish gyros.
1.
Sticky brushes.
2. Dirty commutator.
3. Loose connections.
4.
Flexible lead with broken strands.
5.
Bad bearings.
6. Adjustments - check and clean brushes, com-
mutators and bearings.
D. Erratic disc speeds.
I. Governor points pitted--or governor bind-
ing.
Tachometer drive collar slips.
Motor brush arm sticks on
shaft.
4. Adjustments
- polish, tighten, clean and
oil slightly.
E. Telescope Motor stops frequently.
1.
Detective toggle switch.
2.
Poor terminal connections.
3. Cannon plug connections loose.
4. Adjustments - adjust, clean ane renew.
Fit cannon plug and insure contact.
F. Stabilized brush won't move when drift knob is
turned.
Pilot cannot keep P.D.i. centered.
1. Bombsight clutch not properly adjusted.
2. Moisture or oil in the clutch.
3.
Friction collar slips.
4.
Brush binding on coil.
2.
3.
221