966K and 972K Wheel Loaders 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, in order 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.

Note: If Cat HYDO Advanced hydraulic oils are used, the hydraulic oil change interval is extended to 3000 hours. S·O·S services may extend the oil change even longer. Consult your Cat dealer for details.

The following guidelines should be followed if the service hours are not met:

Items listed between 10 and 100 service hours should be performed at least every 3 months.

Items listed between 250 and 500 service hours should be performed at least every 6 months.

Items listed between 1000 service hours and 2500 service hours should be performed at least every year.

When Required

Automatic Lubrication Grease Tank - Fill
Battery or Battery Cable - Inspect/Replace
Camera - Clean
Circuit Breakers - Reset
Engine Air Filter Primary Element - Clean/Replace
Engine Air Filter Secondary Element - Replace
Engine Air Precleaner - Clean
Engine Compartment - Clean
Ether Starting Aid Cylinder - Replace
Film (Product Identification) - Clean
Fuel System - Prime
Fuel Tank Water and Sediment - Drain
Fuses and Circuit Breakers - Replace/Reset
High Intensity Discharge Lamp (HID) - Replace
Oil Filter - Inspect
Radiator Core - Clean
Ride Control Accumulator - Check
Window Washer Reservoir - Fill
Window Wiper - Inspect/Replace

Every 10 Service Hours or Daily

Backup Alarm - Test
Cooling System Coolant Level - Check
Engine Oil Level - Check
Hydraulic System Oil Level - Check
Seat Belt - Inspect
Transmission Oil Level - Check
Windows - Clean
Work Tool - Inspect
Work Tool - Lubricate

Every 50 Service Hours

Bucket Lower Pivot Bearings - Lubricate
Cab Air Filter - Clean/Replace
Fuel System Primary Filter (Water Separator) - Drain
Tire Inflation - Check

Every 100 Service Hours

Axle Oscillation Bearings - Lubricate
Bucket Linkage and Loader Cylinder Bearings - Lubricate
Secondary Steering - Test
Steering Cylinder Bearings - Lubricate

Every 250 Service Hours

Battery - Clean
Brake Accumulator - Check
Braking System - Test
Differential and Final Drive Oil Level - Check
Drive Shaft Spline (Center) - Lubricate
Drive Shaft Support Bearing - Lubricate
Engine Oil Sample - Obtain

Initial 500 Service Hours

Transmission Oil Filter - Replace

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

Cooling System Coolant Sample (Level 2) - Obtain

Every 500 Service Hours

Automatic Lubrication Filler Filter - Clean
Belt - Inspect/Adjust/Replace
Cooling System Coolant Sample (Level 1) - Obtain
Differential and Final Drive Oil Sample - Obtain
Engine Oil and Filter - Change
Fuel System Primary Filter (Water Separator) Element - Replace
Fuel System Secondary Filter - Replace
Fuel Tank Strainer - Clean
Hydraulic System Oil Filters - Replace
Hydraulic System Oil Sample - Obtain
Transmission Oil Sample - Obtain

Every 1000 Service Hours

Articulation Bearings - Lubricate
Battery Hold-Down - Tighten
Drive Shaft Universal Joints - Lubricate
Hood Tilt Actuator - Lubricate
Roading Fender Hinges - Lubricate
Rollover Protective Structure (ROPS) - Inspect
Transmission Oil - Change
Transmission Oil Filter - Replace

Every 2000 Service Hours

Brake Discs - Check
Cooling System Coolant Sample (Level 2) - Obtain
Differential and Final Drive Oil - Change
Fuel Tank Cap Filter - Replace
Hydraulic Tank Breather - Replace
Open Crankcase Ventilation (OCV) Fumes Disposal Filter - Replace
Service Brake Wear Indicator - Check

Every 2500 Service Hours

Engine Valve Lash - Check

Every 3000 Service Hours

Hydraulic System Oil - Change

Every 3 Years

Seat Belt - Replace

Every 4000 Service Hours

Receiver Dryer (Refrigerant) - Replace

Every 5000 Service Hours

ARD Spark Plug - Clean
Diesel Particulate Filter - Clean
Fuel Priming Pump - Replace

Every 6000 Service Hours

Cooling System Coolant Extender (ELC) - Add

Every 12 000 Service Hours or 6 Years

Cooling System Coolant (ELC) - Change
Cooling System Water Temperature Regulator - Replace