The Norden Bomb Sight manual

M-6

Stabilizer

i. Gears:

Stabi-

IzEr

SPECIFIC

UNITS

Fifty

Hour

Inspec-

tion

(Cont'd)

4.

P.D.i. switch "on*. Move

P. D.I.

brush to each stop

and contact poles 5 and 6.

Readings

should be

equal in

each

dir-

ection.

1.

Stabilizer switch on™

tact

poles 12

and 15.

Con-

12 ohms

2.

Servo switch "on". Contact

poles

13 and 15.

3 ohms

3.

P.D.l. switch "on". Con-

tact poles 13 and 15.

3.5 ohms

4. P.D.l. switch "on*. Move

P.D.!.

brush to each stop

and contact

poles 8 and 9.

Equal

read-

ings in each

direction.

Check

gears for burrs,

and remove the

with a knife-edge Arkansas

Stone.

The Ar-

kansas

chips

east! y:

using it;

the gear

parallel with

the croove and

do not appiy

angular pressure on

Clean ali gear teeth with an orange stick,

brush

benzine,

or other suitable solvent.

brush is. used, dirt and

so:vent should

caught

a cloth

heid next to the gear

cleaned so that other parts will not be affected.

Clean each of the clutches,

bombsight,

auto-pilot and drift clutch, with benzine,

alcoh-

ol or carbon tetrachloride.

Wipe dry with clean

cloth.

Oll all working parts with mi*

bombsight oil and

remove ali surolus oil.

Cr Ciutchina surfaces should have a film

rubbed into the metal and then remove all

the cil with a clean cloth.

oil that remains

pores of the metai will not affect slippage

and will prevent corrosion.

The clutches will

cleaned

monthly whether stabilizer has 50 hours

running time or not.

Local conditions wili also

determine how often the clutches must be cleaned

to keep

working properly.