inches, when measured with an air gage, air
probe, and a 2.0475-inch setting ring, metallize
of component parts. If the inside diameter end
of housing bearing bone is worn beyond 2.0475
End Bell (bear-
placing the steam nozzle of steam dispenser
(table 3) in the mixing tank.
a. General. Clean all parts
cleaning solvent (item 2, table 2-3 ). Do not dip
The strength of the solution can be varied to
pants into the solvent. Use a stiff, nylon brush
to scrub the parts throughly,
(2) Use approximately 140 psi of steam and
regulate the pressure at the boiler rather than at
the nozzle to avoid pressurizing the hose line.
Use solvent in a well-ventilated area.
(3) Using a spray booth with adequate
Avoid inhaling solvent fumes. Do not al-
ventilation and exhaust fans, thoroughly clean
low solvent to contact the skin as burns
the genenator stator and armature assembly with
the mixture of steam and detergent until all
caked grease and carbon are removed. The pro-
portion of detergent to steam can be varied de-
pending upon the condition of Ithe generator
and generator Water (48).
stator and armature assembly.
(4) Shut off the detergent and continue
(1) Ultrasonic cleaning equipment may be
used, if available. Consult the manufacturer of
blasting with steam until all traces of detergent
this equipment for proper cleaning solutions
and methods to be used.
(5) With an oven capable of maintaining
(2) Dry parts with a clean, lint-free cloth
armature assembly at 121 C (250 F) for 4
b. Armature Assembly and Generator Stator.
hours to thoroughly dry the parts.
(6) After baking, apply a light film of
and enerator stator (48) `to remove any carbon,
lubricating oil (item 5, table 2-3 ) or corrosion
copper particles embedded, or any other foreign
matter between the commutator bars and stator
preventive (item 6, table 2-3 ) to all ferrous
windings, as described in following steps (1)
metal surfaces to prevent rusting.
Do not apply oil to the commutator sur-
Goggles, rubber gloves, and other pro-
tective clothing should be worn.
(1) Prepare a quantity of detergent, using
approximately 7 1/2 pounds of cleaner (item 4,
) per 100 gallons
of water. The solution
Paragraphs b through f below list and describe
should be heated and thoroughly agitated by
procedures for repairable parts only.