Cessna SKYMASTER 336 1964 Service Manual page 167

11-3. TROUBLE SHOOTING - Cont.
PROBABLE CAUSE
ISOLATION PROCEDURE
NO FUEL FLOW WHEN ELECTRIC PUMPS OPERATED.
Defective auxiliary pump switch. Check continuity of switch.
Open or defective circuit Check visually; if not open,
breaker. check continuity.
Loose connections or open
Check connections and wiring.
circuit.
Defective electric fuel pump. Disconnect outlet line. With
Defective engine-driven fuel
pump bypass or defective fuel
injection system.
NO FUEL QUANTITY INDICATION.
Fuel tanks empty.
proper fuel supply to pump, fuel
under pressure should flow from
outlet.
Refer to Section 10.
Check fuel quantity.
Defective fuel quantity indicator,
Refer to paragraph 14-32.
transmitter, or electrical
circuit.
Replace defective switch.
Reset. Replace if defective.
Tighten connections; repair
or replace wiring.
Replace defective pump.
Refer to Section 10.
Service with proper grade and
amount of fuel.
Refer to paragraph 14-32.
SHOP NOTES:
11-3
REMEDY