GASKET 9P2074 - Caterpillar

Probable Cause
Loose drive beltAdjust the drive belt to the correct tension.
Faulty charging circuit, faulty ground return circuit, or faulty battery connectionsInspect all cables and inspect all connections. Clean connections. Tighten connections. Replace parts, as needed.
Faulty alternator regulatorInstall a new alternator regulator.
Incorrect alternator regulator adjustmentSome alternator regulators can be adjusted and some alternator regulators cannot be adjusted. Refer to Testing and Adjusting, "Alternator Regulator".
Faulty rectifier diodesReplace the faulty rectifier diode.
Faulty rotor (field coil)Install a new rotor.Note: Install a new rotor for brush type alternators only.The Alternator Charge Rate Is Too High
Probable Cause
Loose connections on the alternator or loose connections on the alternator regulatorTighten all connections.
Faulty alternator regulatorInstall a new alternator regulator.
Incorrect alternator regulator adjustmentSome alternator regulators can be adjusted and some alternator regulators cannot be adjusted. Refer to Testing and Adjusting, "Alternator Regulator".The Alternator Has Noise
Probable Cause
Faulty drive beltInstall a new drive belt for the alternator.
Loose alternator drive pulleyCheck the groove in the pulley that holds the pulley in place. If the groove is worn, install a new pulley. Tighten the pulley nut. Refer to Specifications for the correct torque value.
The alternator drive belt is not in alignment with the drive pulley.Align the drive belt with the drive pulley.
Worn alternator bearingsInstall new bearings in the alternator.
Bent rotor shaftInstall a new rotor shaft.
Shorted out rectifiersInstall a new diode assembly.The Shutoff Solenoid Fails to Stop the Engine.
Probable Cause
Poor connectionsCheck connections and wiring.
Incorrect adjustment for the plunger shaftAdjust the plunger shaft.
Incorrect plunger in the shutoff solenoidInstall the correct plunger shaft.
Not enough plunger travelAdjust the plunger shaft. Replace the solenoid, necessary.The Contactor Switch for Water Temperature Does Not Activate the Shutoff Solenoid.
Probable Cause
Water level in the cooling system is low. Fill the cooling system.
Poor connectionsCheck the connections and the wiring.
The water temperature contactor switch has failed.Check the water temperature contactor switch. Replace the water temperature contactor switch, if necessary.
Incorrect switch settingCheck the temperature setting. If necessary, install a new contactor switch that is adjusted to the correct setting. Refer to "Specifications".
Failure of the shutoff solenoidCheck the shutoff solenoid and replace the shutoff solenoid, if necessary.The Contactor Switch for the Oil Pressure Does Not Activate the Shutoff Solenoid.
Probable Cause
Poor connectionsCheck the connections and wiring.
Incorrect switch setting Check the temperature setting. If necessary, install a new contactor switch that is adjusted to the correct setting. Refer to "Specifications".The Electrical Gauge Gives the Wrong Reading.
Probable Cause
Poor connectionsCheck the connections and wiring.
The sending unit has failed.Check the sending unit. If necessary, install a new sending unit.
The resistor in a 32 V system has failed.Install a new resistor.
The sending unit is incorrect.Install the correct sending unit.
The gauge is incorrect.Install the correct gauge.The Governor Has No Output.
Probable Cause
The cranking speed of the engine is too slow.Determine the cause of the slow cranking.
The lubrication oil is old.Drain the governor and clean the governor. Fill the governor with new oil of the correct weight. Purge any trapped air from the oil passages that are in the governor.
There Is no governor oil pressure.Inspect the oil pressure relief valve of the governor. If