12803 Mercury PRIMER BRACKET

Daily (or prior to a trip)
Walk Around Inspection - Inspect engine for leaks and loose connections Engine Crankcase - Check oil level Woodward Governor/Actuator - Check oil level Cooling System - Check coolant level Air Tank - Drain water and sediment Oil Filter, Fuel Filter and Air Filter Differential Pressure - Check gauges during operation Driven Equipment - Inspect/Check per OEM recommendationsEvery Week or 5600 km (3500 miles)*
Air Filters - Check restriction Fuel Tank - Drain water and sediment Scheduled Oil Sampling (S O S) - Obtain sample to determine oil change interval S O S or Oil Analysis (including Infrared Analysis) should be the determining factor for oil change intervals. Refer to the Scheduled Oil Sampling (S O S), 3600 Lubrication Oil Change Intervals and Lubricant Specifications sections of this Manual for information regarding lubricating oil selection, oil change periods and oil sampling.Every 3 Months or 72 500 km (45,000 miles)*
Manual Barring Device or Air Wrench Drive Barring Device (with Start Interlock If Equipped) - Lubricate Valve Lash, Valve Bridge, Injector Timing and Injector Synchronization - Check/Adjust at initial 3 Month ONLY Engine Oil Filters - Replace Centrifugal Oil Filters - Clean filters & Inspect/Check bearings Crankcase Breather System - Clean elements Fuel System - Drain water/Clean primary filters & Replace final filters; Obtain fuel sample for analysis Fuel Control Linkage - Lubricate/Adjust Cooling System - Test for coolant additive concentration; Obtain coolant sample for analysis Exhaust System - Inspect/Check for leaks Electric Prelube Pump (If Equipped) - Lubricate Engine Protection Devices - Inspect for proper operation Driven Equipment - Check per OEM instruction and maintenance manualEvery 6 Months or 145 000 km (90,000 miles)*
Valve Lash, Valve Bridge, Injector Timing and Injector Synchronization1 - Check/Adjust If valve lash measurements are unchanged at the second 6 Month inspection interval, make subsequent adjustments at Every One Year interval thereafter. If an adjustment is performed at the 6 Month inspection interval, make future adjustments at Every 6 Month interval thereafter until unchanged from 6 Month interval, then make future adjustments at Every One Year interval thereafter.Every One Year or 290 000 km (180,000 miles)*
Water Pumps and Fuel Transfer Pump - Inspect/Replace seals Woodward Governor/Actuator - Replace oil and check for proper operation Electronic Governor Rack Sensor (If Equipped) - Calibrate Magnetic Pickups - Check/Clean Oil Suction Screen - Clean Turbocharger - Inspect for proper operation Vibration Damper & Crankshaft - Inspect seals for leaks Engine Mounts - Inspect Prelube Pump - Inspect/Replace Exhaust Shield - Inspect/ReplaceEvery Two Years or 580 000 km (360,000 miles)*
Water Temperature Regulators - Replace Oil Temperature Regulators - Replace Cooling System - Clean/FlushTop End Overhaul**
Engines used in medium duty - mainline application at Every 4 Years or 966 000 km (600,000 miles). Exchange or Rebuild Cylinder Heads Inspect/Replace Electronic Governor Rack Sensor Probe, Electronic Governor Temperature Derate Probe (if equipped)Unit Injectors, Exhaust Shields, Cylinder Head Intake and Exhaust Inserts, Cylinder Head Inner and Outer Valve Springs, Cylinder Head Valve Spring Guides, Locks and Rotocoils, Grind and Lap Valves and Seats (if not replaced) for full face contact Replace Cylinder Head Gaskets, Seals, O-Ring Seals and Plugs, Turbocharger Bearings, Bushings and Seals, Oil Pump Bushings and Seals, Oil Cooler Seals, Exhaust Manifold Gaskets, Thermocouples (if equipped), Water Pump Idler Gear Bearings, Camshaft Idler Gear Bearings, Intake Air Lines Seals and Air Shutoff Cylinder, Electric Starter Brushes (if equipped), Connecting Rod Bearings and Thrust Bearings (except Crankshaft), Fuel Transfer Pump Seals Clean and Inspect Oil Cooler CoreOverhaul**
Engines used in medium duty - mainline application at Every 8 Years or 1 932 000 km (1,200,000 miles). Exchange or Rebuild Vibration Damper Bearings, Starting Motors, Cylinder Head and Woodward Actuator Replace Main and Connecting Rod Bearings, Camshaft Bearings, Rocker Arm Bearings, Fuel Injectors, Aftercooler Core, Accessory Group Bearings, Centrifugal Filter Bearings, Front and Rear Gear Train Bearings, Cylinder Head Valves and Valve Guides, Cylinder Head Valve Spring Guides, Exhaust Manifold Seals and Bellows, Exhaust Shields, Intake Air Lines Seals and Fuel Rack Bearings Clean and Inspect Oil Cooler & Lube Oil Suction Screen Inspect/Replace Pistons, Piston Rings and Rods, Cylinder Liners, Crankshaft, Camshafts, Valve Mechanism Group, Front and Rear Gear Group, Exhaust Manifolds, Shutoff Controls and Alarms, Air Shutoff Cylinder, Generator Drive Plate and Priority Valve Replace Gaskets and Seals Crankcase Side Covers, Central Structure Covers, Camshaft Front Covers, Camshaft Drive Gear Covers, Front Housing Group, Gear Inspection Group, Rear Housing Group, Rear Structure Covers, Power Take-Off Covers, Priority Valve Group, Crankshaft, Valve Mechanism Covers, Oil Lines, All Water Lines, Oil Cooler, Vibration Damper and Fuel Lines*Perform All Previous Interval Maintenance Items First**Overhaul intervals are based on various assumptions for average load factors, hours per year, etc. The actual time and road distance to overhaul may be longer or shorter depending on the actual application. Contact your Caterpillar dealer for further information.