TROUBLESHOOTING GUIDE C - ELECTRICAL

TM 1-1510-223-MTF

B6.

Fuel quantity indicator fluctuates or reads low.

Defective pins in connector on harness that

mates with gage.

Compensator immersed in water.

Circuit out of calibration.

Tank unit(s) out of circuit.

Defective pins in connector on fuel probes and

wing harness used to connect fuel probes.

B7.

Fuel quantity gage pegs down scale against

stop.

a. Defective probe.

b. Defective pins on connectors on both gage and

probes.

c. Nacelle probe body is making contact with metal

braided hose inside of nacelle tank.

d. Defective indicator.

e. No power to fuel quantity indicator system.

B8.

Fuel quantity indicator needle pegs up scale

against stop.

a. Defective indicator.

B9.

Turbine gas temperature indicator inoperative

or indicates inaccurately.

a. Defective or out of adjustment balance resistor.

b. Defective turbine gas temperature harness.

c. Defective turbine gas temperature indicator.

TROUBLESHOOTING GUIDE C - ELECTRICAL

CONDITION

PROBABLE CAUSE

C1.

Zero or low voltage indicated.

a. Circuit breaker tripped.

b. Loose connection.

3-4