994H Wheel Loader 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 may be extended substantially. S·O·S services may extend the oil change even longer. Consult your Cat dealer for details.

When Required

Automatic Lubrication Grease Tank - Fill
Battery - Recycle
Battery or Battery Cable - Inspect/Replace
Circuit Breakers - Reset
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 - Prime
Fuses - Replace
High Intensity Discharge Lamp (HID) - Replace
High Pressure Screens - Clean/Replace
Hydraulic System Return Screen - Replace
Object Detection Sensor - Clean/Inspect
Oil Filter - Inspect
Radiator Core - Clean
Seat Side Rails - Adjust
Secondary Steering - Test
Transmission Magnetic Screen - Clean
Window Washer Reservoir - Fill
Window Wiper - Inspect/Replace
Windows - Clean

Every 10 Service Hours or Daily

Air Tank Moisture and Sediment - Drain
Automatic Lubrication System Components - Check
Backup Alarm - Test
Bucket Cutting Edges - Inspect/Replace
Bucket Tips - Inspect/Replace
Bucket Wear Plates - Inspect/Replace
Cooling System Coolant Level - Check
Electric Drive Pump (Powered Stairway) Oil Level - Check
Engine Air Filter Service Indicator - Inspect
Engine Oil Level - Check
Hydraulic System Oil Level (Brake Cooling) - Check
Hydraulic System Oil Level (Implement) - Check
Hydraulic System Oil Level (Steering, Brake) - Check
Oil Renewal System Oil Level - Check
Seat Belt - Inspect
Steering Stop - Check
Transmission Oil Level - Check

Initial 50 Service Hours

Collet Pin Bolt Torque - Check

Every 50 Service Hours or Weekly

Cab Air Filter - Clean/Replace
Fuel Tank Water and Sediment - Drain
Steering Cylinder Bearings - Lubricate
Tire Inflation - Check

Initial 250 Service Hours

Cooling System Coolant Sample (Level 2) - Obtain
Engine Valve Lash and Bridge - Check
Engine Valve Rotators - Inspect

Every 250 Service Hours or Monthly

Alternator - Inspect
Axle Oscillation Bearings - Lubricate
Battery - Clean
Belts - Inspect/Adjust/Replace
Braking System - Test
Differential and Final Drive Oil Level - Check
Drive Shaft Spline (Center) - Lubricate
Drive Shaft Support Bearing - Lubricate
Engine Air Filter Service Indicator - Inspect/Replace
Engine Oil Sample - Obtain
Engine Oil and Filter - Change
Pump Drive Shaft (Front) - Lubricate
Pump Drive Shaft Support Bearing (Rear) - Lubricate

Initial 500 Service Hours

Seat Side Rails - Adjust

Every 500 Service Hours or 3 Months

Collet Pin Bolt Torque - Check
Cooling System Coolant Sample (Level 1) - Obtain
Differential and Final Drive Oil Sample - Obtain
Engine Crankcase Breather - Clean
Frame - Inspect
Fuel System Primary Filter - Clean/Inspect/Replace
Fuel System Secondary Filter - Replace
Fuel Tank Cap and Strainer - Clean
Hydraulic System Oil Filter (Implement Pump Case Drain) - Replace
Hydraulic System Oil Filter (Pilot) - Replace
Hydraulic System Oil Filter (Steering Pump Case Drain) - Replace
Hydraulic System Oil Sample (Implement) - Obtain
Hydraulic System Oil Sample (Steering, Brake) - Obtain
Power Train Oil Filter (Transmission, Torque Converter) - Replace
Transmission Oil Sample - Obtain

Every 1000 Service Hours or 6 Months

Battery Hold-Down - Tighten
Hydraulic System Oil Filter and Screen (Hydraulic Cooler) - Clean/Inspect/Replace
Hydraulic System Oil Filter and Screen (Steering Cooler) (Brake Cooler) - Clean/Inspect/Replace
Rollover Protective Structure (ROPS) - Inspect
Transmission Oil - Change

Every 1000 Service Hours or 1 Year

Hydraulic System Oil (Steering, Brake) - Change

Every 2000 Service Hours or 1 Year

Air Dryer Desiccant - Replace
Axle Oil Cooler Screens - Clean/Replace
Cooling System Coolant Sample (Level 2) - Obtain
Differential and Final Drive Oil - Change
Electric Drive Pump (Powered Stairway) Oil - Change
Hydraulic System Oil (Brake Cooling) - Change
Hydraulic System Oil (Implement) - Change
Hydraulic Tank Breaker Relief Valve - Clean
Platform (Powered Stairway) - Lubricate
Receiver Dryer (Refrigerant) - Replace

Every 3000 Service Hours or 2 Years

Crankshaft Vibration Damper - Inspect
Engine Mounts - Inspect

Every 4000 Service Hours or 2.5 Years

Engine Valve Lash and Bridge - Check
Engine Valve Rotators - Inspect

Every 3 Years

Seat Belt - Replace

Every 5000 Service Hours or 3 Years

Starting Motor - Inspect
Turbocharger - Inspect

Every 6000 Service Hours or 3 Years

Cooling System Coolant Extender (ELC) - Add
Cooling System Pressure Cap - Clean/Replace

Every 6000 Service Hours or 4 Years

Cooling System Water Temperature Regulator - Replace
Engine Water Pump - Inspect

Every 9500 Service Hours or 1 892 705 L (500 000 US gal) of Fuel

Engine Components - Replace/Install Reman

Every 12 000 Service Hours or 6 Years

Cooling System Coolant (ELC) - Change

Every 21 000 Service Hours or 3 501 000 L (925 000 US gal) of Fuel

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