Multiquip Portable Generator DCA45SSIU4F

Warning: This procedure requires trained personnel with PPE!

If fuel pump relay did not test normal, report the issue to the maintenance team and stop the procedure

Upload a photo of the relay base holder before cleaning

Dielectric cleaner sprayed onto the contact pins on the relay base holder?

Enter the air pressure used for blowing off dirt and debris

Upload a photo of the relay base holder after cleaning

Fuel pump relay reinstalled back into its base holder?

Did the engine start after reinstalling the fuel pump relay?

Check for rusted, corroded and oxidized electrical connections

Check for carbon flash deposits around the 120/240V AC receptacles

Check for signs of wire overheating

Check for infestation inside the generator

Check for elongation on the bolt hole opening on the buss bar

Check if electrical connectors are seated correctly

Check for loose crimp connections

NOTICE: Before performing the resistance test, the three yellow lead wires (Figure 37) must be disconnected from the rotating rectifier. If the reading indicates an open circuit the component may have to be replaced or repaired.

The exciter armature (Figure 37) consists of three yellow lead wires with no wire designation. These three wire leads are connected to the U, V and W terminals on the rotating rectifier.

Are the three yellow lead wires disconnected from the rotating rectifier?

Upload a photo of the disconnected wires

Enter the resistance reading for the U and V wires

Enter the resistance reading for the V and W wires

Enter the resistance reading for the U and W wires

Sign off on the resistance test

NOTICE: For complete engine inspection and service specifications, consult the Engine Manufactures 'Owners' and/or 'Service' Manuals.

Air cleaner for restrictions and contaminants. Replace if necessary.

Cooling system hoses for cracks and distortions — tighten clamps or repair as needed.

Radiator for restrictions and corrosion.

Engine block heater for leaks and verify unit functioning properly. Engine block heater is an option on some units.

Coolant, fuel and oil leaks. Tighten connections or repair as needed.

Belts and pulleys for cracks and wear — adjust or repair as needed.

Governor and injection pump for leaks and proper operation.

Turbocharger for proper clearance and free movement as required. Reference engine service manual.

NOTICE: Be sure you have adjusted the engine crank disconnect potentiometer first.

Turn the engine overspeed adjustment potentiometer (Figure 56C) 30 turns clockwise

Using a small, flat-blade screwdriver, set the DIP switch at position 5 (Figure 56D) to the ON position (up)

Start the engine. It should crank and start. Verify that the engine running LED is lit.

Now start turning the overspeed adjustment potentiometer counterclockwise until the engine control shuts down the engine (overspeed fault)

Again using a small, flat-blade screwdriver, set the DIP switch at position 5 to the OFF position (down)

If the overcrank and overspeed LEDs light at the same time on the ECU, reference troubleshooting flow charts in this service manual for additional information.

Sign off on the engine overspeed adjustment