LEVER AS 4886538 - Caterpillar

Throttle Signal for the Speed Demand Input
Use the electronic service tool to observe the signal for the speed demand input.
If the signal is erratic, refer to Troubleshooting, "Speed Control (Analog) - Test" or refer to Troubleshooting, "Speed Control (Digital) - Test".
If the fault has not been eliminated, proceed to "Air Intake and Exhaust System".Air Intake and Exhaust System
Check the air filter restriction indicator, if equipped.
Ensure that the air filter is clean and serviceable.
Check the air intake and the exhaust system for the following defects:
Blockages
Restrictions
Damage to the air intake and exhaust lines and hoses
Make all necessary repairs to the engine.
Ensure that the repairs have eliminated the fault.
If the fault has not been eliminated, proceed to "Valve Lash".Valve Lash
Check the valve lash and reset the valve lash, if necessary. Refer to Systems Operation, Testing and Adjusting, "Engine Valve Lash - Inspect and Adjust".
If the repair does not eliminate the fault proceed to "Turbocharger".Turbocharger
Note: The turbocharger that is installed on this engine is a nonserviceable item. If any mechanical fault exists, except for the wastegate actuator, then the turbocharger must be replaced. The wastegate actuator can be replaced.
Ensure that the mounting bolts for the turbocharger are tight.
Check that the oil drain for the turbocharger is not blocked or restricted.
Check that the compressor housing for the turbocharger is free of dirt, debris and damage.
Check that the turbine housing for the turbocharger is free of dirt, debris and damage.
Check that the turbine blades rotate freely in the turbocharger.
Ensure that the wastegate on the turbocharger is adjusted correctly. Refer to Systems Operation, Testing and Adjusting, "Turbocharger - Inspect". If the wastegate actuator is faulty, replace the wastegate actuator. Refer to Disassembly and Assembly, "Turbocharger - Disassemble" and Disassembly and Assembly, "Turbocharger - Assemble".
If necessary, replace the turbocharger. Refer to Disassembly and Assembly, "Turbocharger - Remove" and Disassembly and Assembly, "Turbocharger - Install".
Check that the repairs have eliminated the faults.
If the repairs have not eliminated the fault proceed to "Fuel Supply".Fuel Supply
Visually check the fuel tank for fuel. The fuel gauge may be faulty.
Ensure that the fuel supply valve is in the full OPEN position.
If the temperature is below 0 °C (32 °F), check for solidified fuel (wax).
Visually inspect the fuel supply lines for restrictions.
Check that the low pressure fuel lines are tight and secured properly.
Remove the fuel filters. Inspect the fuel filters for contamination. Install new fuel filters. Refer to the Operation and Maintenance Manual, "Fuel System Filter- Replace and Fuel System Primary Filter (Water Separator) Element - Replace". Determine the cause of the contamination.
Check the diesel fuel for contamination. Refer to Systems Operation, Testing and Adjusting, "Fuel Quality - Test".
Check for air in the low pressure fuel system. Refer to Systems Operation, Testing and Adjusting, "Air in Fuel - Test".
Ensure that the fuel system has been primed. Refer to Systems Operation, Testing and Adjusting, "Fuel System - Prime".
Check the fuel pressure. Refer to Systems Operation, Testing and Adjusting, "Fuel System Pressure - Test".
Contact with high pressure fuel may cause fluid penetration and burn