Maintenance Interval Schedule - Wellhead or Natural Gas Engines That Have a 9.2:1 Compression Ratio
Ensure that all safety information, warnings, and instructions are read and understood before any operation or any maintenance procedures are performed. The user is responsible for the performance of maintenance, including all adjustments, the use of proper lubricants, fluids, and filters. The user is also responsible for the replacement of components due to normal wear and aging. Failure to adhere to proper maintenance intervals and procedures may result in diminished performance of the product and/or accelerated wear of components. Use mileage, fuel consumption, service hours, or calendar time, WHICH EVER OCCURS FIRST, to determine the maintenance intervals. Products that operate in severe operating conditions may require more frequent maintenance. Before each consecutive interval is performed, all maintenance from the previous interval must be performed.
Barring Device - Lubricate
Engine Air Cleaner Element (Single Element) - Clean/Replace
Engine Air Precleaner - Clean
Overhaul Considerations
Air Tank Moisture and Sediment - Drain
Control Panel - Inspect
Cooling System Coolant Level - Check
Driven Equipment - Inspect/Replace/Lubricate
Electrohydraulic System - Inspect
Engine Air Cleaner Service Indicator - Inspect
Engine Oil Level - Check
Fuel System Fuel Filter Differential Pressure - Check
Walk-Around Inspection
Engine Oil Sample - Obtain
Cooling System Coolant Sample (Level 1) - Obtain
Engine Valve Lash - Inspect/Adjust
Engine Valve Rotators - Inspect
Ignition System Spark Plugs - Check/Adjust
Valve Stem Projection - Measure/Record
Crankcase Blowby - Measure/Record
Electrohydraulic System - Check/Adjust
Electrohydraulic System Oil - Change
Electrohydraulic System Oil Filter - Change
Engine Oil - Change
Engine Oil Filter - Change
Exhaust Bypass - Recondition
Ignition System Spark Plugs - Replace
Inlet Air System - Inspect
Air Starting Motor Lubricator Bowl - Clean
Belts - Inspect/Adjust/Replace
Crankshaft Vibration Damper - Inspect
Driven Equipment - Check
Engine Crankcase Breather - Clean
Engine Mounts - Check
Engine Protective Devices - Check
Hoses and Clamps - Inspect/Replace
Inlet Gas Manifold and Piping - Inspect/Replace
Starting Motor - Inspect
Turbocharger - Inspect
Engine Speed/Timing Sensor - Clean/Inspect
Electrohydraulic Actuator - Inspect
Engine Oil Temperature Regulator - Replace
Exhaust Shields - Inspect
Gas Pressure Regulator - Inspect/Replace
Prechamber Check Valves - Replace
Prelube Pump - Inspect
Water Pump - Inspect
Overhaul (Top End)
Gas Admission Valve - Recondition
Overhaul (In-Frame)
When Required
Actuator Control Linkage - ReplaceBarring Device - Lubricate
Engine Air Cleaner Element (Single Element) - Clean/Replace
Engine Air Precleaner - Clean
Overhaul Considerations
Daily
Air Starting Motor Lubricator Oil Level - CheckAir Tank Moisture and Sediment - Drain
Control Panel - Inspect
Cooling System Coolant Level - Check
Driven Equipment - Inspect/Replace/Lubricate
Electrohydraulic System - Inspect
Engine Air Cleaner Service Indicator - Inspect
Engine Oil Level - Check
Fuel System Fuel Filter Differential Pressure - Check
Walk-Around Inspection
Every 250 Service Hours
Battery Electrolyte Level - CheckEngine Oil Sample - Obtain
Every 1000 Service Hours
Actuator Control Linkage - LubricateCooling System Coolant Sample (Level 1) - Obtain
Every 2000 Service Hours
Aftercooler Condensation - DrainEngine Valve Lash - Inspect/Adjust
Engine Valve Rotators - Inspect
Ignition System Spark Plugs - Check/Adjust
Valve Stem Projection - Measure/Record
Every 4000 Service Hours
Cooling System Supplemental Coolant Additive (SCA) - Test/AddEvery 5000 Service Hours
Combustion Sensor - Clean/Inspect/ReplaceCrankcase Blowby - Measure/Record
Electrohydraulic System - Check/Adjust
Electrohydraulic System Oil - Change
Electrohydraulic System Oil Filter - Change
Engine Oil - Change
Engine Oil Filter - Change
Exhaust Bypass - Recondition
Ignition System Spark Plugs - Replace
Inlet Air System - Inspect
Every 6000 Service Hours
Prechamber Check Valves - CleanEvery 8000 Service Hours
Air Starting Motor Lines Screen - CleanAir Starting Motor Lubricator Bowl - Clean
Belts - Inspect/Adjust/Replace
Crankshaft Vibration Damper - Inspect
Driven Equipment - Check
Engine Crankcase Breather - Clean
Engine Mounts - Check
Engine Protective Devices - Check
Hoses and Clamps - Inspect/Replace
Inlet Gas Manifold and Piping - Inspect/Replace
Starting Motor - Inspect
Turbocharger - Inspect
Every 10 000 Service Hours
Cooling System Water Temperature Regulator - ReplaceEngine Speed/Timing Sensor - Clean/Inspect
Every 12 000 Service Hours
Alternator - InspectElectrohydraulic Actuator - Inspect
Engine Oil Temperature Regulator - Replace
Exhaust Shields - Inspect
Gas Pressure Regulator - Inspect/Replace
Prechamber Check Valves - Replace
Prelube Pump - Inspect
Water Pump - Inspect
Every 20 000 Service Hours or 3 Years
Cooling System Coolant (NGEC) - ChangeEvery 25 000 Service Hours
Gas Admission Valve Seals - Inspect/ReplaceOverhaul (Top End)
Every 50 000 Service Hours
Electrohydraulic Actuator - ReconditionGas Admission Valve - Recondition
Overhaul (In-Frame)
Every 100 000 Service Hours
Overhaul (Major)Overhaul
Connecting Rod Bearings - Inspect/ReplaceCaterpillar Information System:
G3606 and G3608 Engines Maintenance Interval Schedule - Engines That Use Bio-Gas
G3606 and G3608 Engines Maintenance Interval Schedule - Natural Gas Engines That Have a Compression Ratio of 10.5:1 or 11:1
C7.1 Marine Engine Coolant Temperature Sensor - Remove and Install
C9.3 Marine Propulsion Engine Electronic Modular Control Panel 4 (EMCP 4) - EMCP 4.1/4.2 If equipped
C7.1 Marine Engine Fuel Pressure Sensor - Remove and Install
C4.4 and C6.6 Engines Alternator Problem
HPU300 Hydraulic Power Pack Power Pack Connection and Coupling
C2.4 Tier 4 Final Engines for Caterpillar Built Machines Engine Misfires, Runs Rough or Is Unstable
C175 Tier 4 Final Engines for Off-Highway Trucks DEF Pump Motor - Test
C7.1 Marine Engine Engine Oil Pressure Sensor - Remove and Install
DE Series Generator Set with Cat C1.1, C1.5, and C2.2 Engines Safety Messages
C4.4 and C6.6 Engines Acceleration Is Poor or Throttle Response Is Poor
G3606 and G3608 Engines Engine Speed/Timing Sensor - Clean/Inspect
C7.1 Marine Engine Speed/Timing Sensor - Remove and Install
C4.4 and C6.6 Engines Crankcase Fumes Disposal Tube Has Oil Draining
C18 Marine Generator Set Engines Timing - Calibrate
C4.4 and C6.6 Engines Diesel Particulate Filter Collects Excessive Soot
C4.4 and C6.6 Engines Diesel Particulate Filter Temperature Is Low
Remote Stop Link on Certain C4.4 and C7.1 Marine Generator Sets {1408, 4493, 449C} Remote Stop Link on Certain C4.4 and C7.1 Marine Generator Sets {1408, 4493, 449C}
C4.4 and C6.6 Engines Engine Cranks but Does Not Start
C4.4 and C6.6 Engines Engine Does Not Crank
C4.4 and C6.6 Engines Engine Misfires, Runs Rough or Is Unstable
C175 Tier 4 Final Engines for Off-Highway Trucks DEF Pump Pressure Sensor - Test
C4.4 and C6.6 Engines Engine Shutdown Occurs Intermittently