Contents · Sections IX–X
RESTRICTEDX
2. Altitude Knob153
3. Disc155
4. Rate and Displacement Knobs155
B. Rate End, Computer Half155
1. Roller155
2. Automatic Release Mechanism (Sight)155
3. Forward View Mechanism157
a. M-3157
b. M-6157
4. Sheaves157
5. Installation of Telescope Cable
M-4s and up157
6. Zeroing the Roller159
7. Zero Ground Speed Drum160
8. Rough Field Check161
C. Gyro, Cardan and Telescope Assembly161
1. Telescope and Cradle161
2. Gyro162
Speed of Sight Gyro164
Replacement of Carbon Brushes164
Shaping Flexible Leads and Pigtails165
3. Cardan167
D. Cross Trail Carriage167
E. Cross Trail Knob167
F. Dovetail and Eccentric167
G. Leveling Knobs167
H. Caging Knob167
I. Drift Pointer Clearance167
J. Course Knobs169
Additional Maintenance169
A. Changes in Order to Render A.E.S.
Inoperative169
B. Check For Roller Slippage171
C. Installation of The Double Cable173
D. Interchangeability of Sights175
E. Changes of M-9 Over M-6175
Thirty Day Inspection177
SECTION X
CALIBRATION
INTRODUCTION179
Calibration M-6 Sight181
A. Set Pedestal Reference Index181
B. Establish Grid Lines of True Heading183
C. Check Alignment of Vertical Hair183
D. Synchronize The Trail Arm With The
Cross Trail Mechanism185
