773G and 775G OEM Off-Highway Truck Chassis Caterpillar

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. All adjustments, the use of proper lubricants, fluids, filters, and the replacement of components due to normal wear and aging are included. 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. Refer to the maintenance procedure for any other exceptions that may change the maintenance intervals.

Note: The aftertreatment system can be expected to function properly for the useful life of the engine (emissions durability period), as defined by regulation. All prescribed maintenance requirements must be followed.

Note: Before each consecutive interval is performed, all maintenance from the previous interval must be performed.

Use the service hour meter for the machine or machine system to determine when maintenance should be performed.

When Required

Air Conditioner Filter - Clean
Automatic Lubrication Reservoir - Fill
Battery - Recycle
Battery or Battery Cable - Inspect/Replace
Cab Air Filter - Clean/Replace
Cooling System Coolant (ELC) - Change
Display and Camera - Clean
Engine Air Filter Primary Element - Clean/Replace
Engine Air Filter Secondary Element - Replace
Engine Air Precleaner - Clean
Ether Starting Aid Cylinder - Replace
Fuel System - Fill
Fuel System - Prime
Fuses, Circuit Breakers and Relays - Replace/Reset
High Intensity Discharge Lamp (HID) - Replace
Oil Filter - Inspect
Rim - Inspect
Screen (Hoist and Brake Tank) - Inspect/Clean/Replace
Suction Screen (Torque Converter Scavenge) - Clean
Traction Control System (TCS) - Test
Window Washer Bottle - Fill
Window Wiper - Inspect/Replace
Windows - Clean

Initial 10 Service Hours

Oil Filter (Brake) - Replace
Oil Filter (Power Train) - Replace
Oil Filter (Steering) - Replace

Every 10 Service Hours or Daily

Backup Alarm - Test
Brakes, Indicators and Gauges - Test
Braking System - Test
Cooling System Coolant Level - Check
Differential and Final Drive Oil Level - Check
Engine Oil Level - Check
Fuel System Primary Filter (Water Separator) - Drain
Fuel Tank Water and Sediment - Drain
Hoist and Brake Tank Oil Level - Check
Seat Belt - Inspect
Secondary Steering - Test
Steering System Oil Level - Check
Torque Converter and Transmission Oil Level - Check

Every 50 Service Hours or Weekly

Body Pivot Bearings - Lubricate
Central Lubrication System - Lubricate
Front Suspension Cylinder - Lubricate
Hoist Cylinder Bearings - Lubricate
Magnetic Plug (Wheels) - Check
Rear Axle A-Frame Bearing - Lubricate
Rear Axle Housing Lateral Control Rod Bearings - Lubricate
Rear Suspension Cylinder Bearings - Lubricate
Steering Cylinder Bearings - Lubricate
Steering Tie Rod and Pin Bearings - Lubricate
Tire Inflation - Check

Every 250 Service Hours or Monthly

Drive Shaft Slip Joint - Lubricate
Fan Drive Bearing and Belt Tightener Pulley - Lubricate

Initial 500 Service Hours

Engine Brake Slave Piston Lash - Inspect/Adjust
Engine Valve Lash - Check/Adjust
Engine Valve Rotators - Inspect
Frame and Body Support Pads - Clean/Inspect

Initial 500 Hours (for New Systems, Refilled Systems, and Converted Systems)

Cooling System Coolant Sample (Level 2) - Obtain

Every 500 Service Hours

Cooling System Coolant Sample (Level 1) - Obtain
Differential and Final Drive Oil Sample - Obtain
Engine Oil Sample - Obtain
Front Wheel Oil Sample - Obtain
Hoist and Brake Tank Oil Sample - Obtain
Steering System Oil Sample - Obtain
Torque Converter and Transmission Oil Sample - Obtain

Every 500 Service Hours or 3 Months

Belts - Inspect/Replace
Breather (Hoist and Brake Tank) - Replace
Breather (Torque Converter and Transmission) - Replace
Differential and Final Drive Oil - Inspect
Engine Crankcase Breather - Clean
Engine Oil and Filter - Change
Frame - Clean/Inspect
Front Wheel Oil - Change
Front Wheel Oil - Inspect
Front Wheel Oil Level - Check
Fuel System Primary Filter (Water Separator) - Replace
Fuel System Secondary Filter - Replace
Fuel Tank Cap and Strainer - Clean
Suction Screen (Transmission Scavenge) - Clean
Suspension Cylinder - Check

Every 1000 Service Hours or 6 Months

Frame and Body - Inspect
Frame and Body Support Pads - Clean/Inspect
Hoist and Brake Tank Oil - Change
Oil Filter (Brake) - Replace
Oil Filter (Power Train) - Replace
Oil Filter (Steering) - Replace
Rollover Protective Structure (ROPS) - Inspect
Seat Suspension - Inspect/Lubricate
Service Brakes - Inspect
Steering Linkage - Inspect
Steering System Oil - Change
Torque Converter and Transmission Oil - Change

Every 2000 Service Hours or 1 Year

Breather (Differential and Final Drive) - Replace
Differential Thrust Pin Clearance - Check

Every Year

Cooling System Coolant Sample (Level 2) - Obtain

Every 2 Years

Receiver Dryer (Refrigerant) - Replace

Every 3000 Service Hours or 2 Years

Cooling System Pressure Cap - Clean/Replace
Electronic Unit Injector - Inspect/Adjust
Engine Brake Slave Piston Lash - Inspect/Adjust
Engine Valve Lash - Check/Adjust
Engine Valve Rotators - Inspect
Oil Filter (Steering Pump Case Drain) - Replace
Radiator Core and Aftercooler - Clean

Every 3 Years

Seat Belt - Replace

Every 4000 Service Hours or 1 Year

Differential and Final Drive Oil - Change

Every 6000 Service Hours or 3 Years

Cooling System Coolant Extender (ELC) - Add

Every 6000 Service Hours or 4 Years

Cooling System Water Temperature Regulator - Replace

Every 7500 Hours or 568 500 L (150 000 US gal) of Fuel

Engine Components - Rebuild/Install Reman
Engine Water Pump - Inspect

Every 10 000 Service Hours

Steering Ball Stud - Replace

Every 12 000 Service Hours or 6 Years

Cooling System Coolant (ELC) - Change

Every 15 000 Service Hours

Rim - Inspect

Every 15 000 Hours or 1 137 000 L (300 000 US gal) of Fuel

Engine Components - Clean/Inspect, Rebuild/Install Reman, Install New
Engine Components - Clean/Inspect, Rebuild/Install Reman, Install New