JOAP ATOMIC EMISSION ROTRODE (Cont)

NAVAIR 17-15-50.3

TM 38-301-3

T.O. 33-1-37-3

CGTO 33-1-37-3

ENGINE:

J79-GE-8/-10 (NAVY ONLY) (Cont)

AIRCRAFT:

(F-4)

Caution must be exercised when evaluating this system due to the common oil supply of engine and CSD. When

Fe increases by itself or in combination with Cu, recommend transfer gearbox starter drive area be checked for

loose nut on drive or for broken carbon seal. Also recommend inspection of the front of transfer gearbox for same

problem and inspection of filters including CSD filter. When Cu increases in combination with Fe, but Cu is higher,

the problem will usually be in the CSD. High Mg is usually indicative of discrepancy in the gearbox. Any increase

in Ag in usually indicative of incipient No. 2 bearing failure and will be accompanied with high Fe with or without

increases in Cu.

Main bearing housings

Afterburner fuel pump gears and bearings

No. 2 bearings, balls and races

No. 1 bearing rollers, races and carbon seal runners

Gearbox gears, shafts and splines

No. 3 bearing rollers and races

Accessory variable nozzle actuator

Accessory main lube and hydraulic pump

Accessory scavenge pumps

Gearbox bearings

Mg &

Constant speed drive

Ag* &

Accessory variable nozzle pump

*Ag in 1P, 1M, and 1N pumps

Variable nozzle control valve

Main bearing cages

Gearbox castings

Main bearing seal races

A20