S 012-005
(4)
Remove the antiskid transducers (AMM 32-42-06/401).
S 212-006
(5)
Examine the axle for heat damage as follows:
NOTE: This step is necessary only when the axle sleeve show signs
____ of scoring, discoloration, or other damage, and the axle sleeve has been removed.
(a) Examine the heat resistant protective coating for signs of blistering and melting.
NOTE: A heat resistant protective coating is used on the
____ axles, near the brake mounting flanges, and under the axle sleeves. The heat resistant protective coating is a greenish gray color. To apply the heat resistant protective coating Refer to AMM 51-21-11/701.
(b)
Examine the light gray hydraulic fluid resistant paint on the axle for a brown shade color caused when it becomes to hot.
(c)
Do a check for discoloration of the crome plating on the axle lands where the sleeve touches.
(d)
Examine the green primer on the inner surfaces (bore) of the axle with a borescope. 1) Use the borescope to a minimum depth of 16 inches and look
for discoloration or blistering. 2) The green primer will turn to a light brown or black color when it becomes too hot.
NOTE: If the paint shows only a small discoloration, you
____ can do the heat damage inspection when the airplane goes back to the primary base. Do not make a landing more than three times before you do this inspection.
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(6) S 212-007If signs of heat damage are found in the above steps, do the Heat Damage Inspection (AMM 05-51-14/201).
(7) S 352-008If the cadmium plate on the axle bore or the crome plate on the outer part of the axle shows signs of heat damage, replace or repair the damaged components.
NOTE:____ Heat damage to the cadmium plate can cause cadmium embrittlement of the steel substrate.
(8) S 212-009Do an inspection of the Nose Gear Axle. (a) Visually examine the wheel bearing washer, axle nut, and inner wheel bearing spacer for scoring or other damage. 1) Replace or repair the components when it is necessary. (b) Examine the axle for damage. 1) Examine for scoring or discoloration of the crome plated bearing lands on the axle. 2) Examine the light gray hydraulic fluid resistant paint on the axle for a brown shade caused when it becomes too hot. 3) Examine the green primer on the inner surfaces (bore) of the axle with a borescope. a) Use the borescope to a minimum depth of 7 inches and look for discoloration or blistering b) The green primer will turn to a light brown or black color when it becomes too hot.
NOTE:____ If the paint shows only a small discoloration, you can do the heat damage inspection when the airplane goes back to the primary base. Do not make a landing more than three times before you do this inspection.
(9) S 212-010If signs of heat damage are found in the above steps, do the Heat Damage Inspection (AMM 05-51-14/201).
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S 352-011
(10) Replace or repair the damaged components as follows:
(a) If the cadmium plate on the axle bore shows signs of heat damage.
NOTE: Heat damage to the cadmium plate can cause cadmium
____ embrittlement of the steel substrate.
(b) If the crome plate on the outer part of the axle shows signs of heat damage.
E. Put the airplane back to its usual condition.
S 412-012
(1) Install all components that were removed.
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