Troubleshooting, continued
RESTRICTED
5.
Stabilizer
gyro not revolving at proper
speed
to maintain stabilization.
Bombsight clutch
Slipping at too low a ten
7.
sion.
Servo
(torque) unit not functioning prop-
erly mproper servo clutch tension.
Oil on servo clutches.
Isolated sector fouled, shorted or poor
Drush
contact.
8.
Adjustments
check the foliowing and make
necessary
adjustments:
Alignment of stab-
ilizer;
reticle for alignment; balance of
gyro; speed of gyro; clutch tensions.
J.
Bombsight gyro not stable.
1.
Burned out
rotor bearing.
2.
Heavy
at high
altitudes, or gyro not
completely warmed.
3.
Soft carbon brushes reducing gyro speed.
• Adjustments check bearings; brush contact.
K.
Course knobs
turn too hard.
1.
Burrs on worm or gear.
2. Tolerance between gears and worm not prop-
erly adjusted.
3. Adjustments: Remove burrs: Adjust toleran-
Large
eedéflection errors.
Sight stem
lock nut not on properly. (M3)
2. Sight stem locking plate loose or improper-
ly positioned,
i.e. dovetail misaligned.
3. Sight stem locking pin not fitted into pos
ition, or has too much play.
4. Adjustment:
Check screws insight stem
locking
plate for tightness
check fil uf
Sight stem pin.
M. Erratic bomb release.
1.
Auto-release contact dirty, burned or cor-
roded,
or release finger not properly ad-
2.
justed.
Adjustments-clean and service contact. Ad -
just
release finger.
N.
Isolated
sector burning.
Wires to isolated sector touching gyro caser
2. Adjustments-check for ground onleads to is-
olated
sector.
This ground will energize
one of the clapper magnet continuousiy.
0.
Terminal plugs contacting case.
Faulty
installation or fitting.
2. Adjustments-refit and reinstall.
6.
a.
improper
servo
tension.
b.
c.
L.
223