RUBBING OR BINDING IS FELT WHEN TUBEAXIAL FAN BLADES OR LEFT COOLING FAN BLADES ARE TURNED BY HAND AND THERE ARE METAL CHIPS IN THE OIL PUMP-continued

TM 9-2835-255-34

3-2. TROUBLESHOOTING - CONTINUED

k. POWER TURBINE AND REDUCTION (4)

ES-43. RUBBING OR BINDING IS

GEARBOX (RGB) - CONTINUED

FELT WHEN TUBEAXIAL FAN BLADES

OR LEFT COOLING FAN BLADES ARE

TURNED BY HAND AND THERE ARE

METAL CHIPS IN THE OIL PUMP TO

OIL COOLER FLUID FILTER. - CONTINUED

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?

A. Replace number 10 bearing

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.

CONTINUED ON NEXT PAGE

Change 6

3-327