RUBBING OR BINDING IS FELT WHEN TUBEAXIAL FAN BLADES O R LEFT COOLING FAN BLADES ARE TURNED BY HAND AND MORE THAN ONE HALF OF MAIN OIL PUMP-continued

TM 9-2835-255-34

3-2. TROUBLESHOOTING - CONTINUED

k. POWER TURBINE AND REDUCTION (3)

ES-42. RUBBING OR BINDING IS

FELT WHEN TUBEAXIAL FAN BLADES

GEARBOX (RGB) - CONTINUED

OR LEFT COOLING FAN BLADES ARE

TURNED BY HAND AND MORE THAN

ONE HALF OF MAIN OIL PUMP

MAGNETIC PLUG IS COVERED WITH

METAL CHIPS. - CONTINUED

A. Salvage Gas Turbine Power

B. Replace engine oil pump

(TM 20-1).

C. Replace engine oil cooler

(TM 20-1).

D. Replace engine AC

generator (TM 20-1).

E. Clean cooler and generator

lines (TM 20-1).

F. Verify problem is solved.

Check rotation of power turbine

in rear engine subassembly (1)

by turning shouldered shaft (2)

clockwise. Shaft should turn

smoothly and no unusual noises

should be heard.

Does shaft turn smoothly with no

unusual noises?

CONTINUED ON NEXT PAGE

3-321

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