322C Excavator Caterpillar

All safety information, warnings, and instructions must be read and understood before you perform any operation or any maintenance procedure.

Before each consecutive interval is performed, all of the maintenance requirements from the previous interval must also be performed.

The normal oil change interval for the engine is Every 500 Service Hours or 3 Months. If the engine is operated under severe conditions, change the oil after Every 250 Service Hours or 1 Month. Severe conditions include the following factors: high temperatures, continuous high loads and extremely dusty conditions .

Refer to the results of the S·O·S oil analysis in order to determine if the oil change interval should be decreased to 250 hours. Consult your Caterpillar Dealer for detailed information regarding the optimum oil change interval.

Refer to Operation and Maintenance Manual, "Hydraulic System Oil - Change" for information on a 4000 hour maintenance interval for the hydraulic system.

When Required

Air Conditioner/Cab Heater Filter (Recirculation) - Inspect/Replace
Battery - Recycle
Battery or Battery Cable - Inspect/Replace
Bucket Linkage - Inspect/Adjust
Bucket Tips - Inspect/Replace
Bucket Tips - Inspect/Replace
Cab Air Filter (Fresh Air) - Clean/Replace
Circuit Breakers - Reset
Engine Air Filter Primary Element - Clean/Replace
Engine Air Filter Secondary Element - Replace
Ether Starting Aid Cylinder - Replace
Fuel System - Prime
Fuses - Replace
Fuses - Replace
Hydraulic Tank Screen - Clean
Oil Filter - Inspect
Radiator Core - Clean
Track Adjustment - Adjust
Window Washer Reservoir - Fill
Window Wiper - Inspect/Replace
Windows - Clean

Every 10 Service Hours or Daily for First 100 Hours

Boom Cylinder Head (Long Reach Configuration) - Lubricate
Boom and Stick Linkage - Lubricate
Bucket Linkage (B and S Family) - Lubricate
Bucket Linkage (D Family) - Lubricate

Every 10 Service Hours or Daily

Cooling System Coolant Level - Check
Engine Oil Level - Check
Fuel System Water Separator - Drain
Fuel Tank Water and Sediment - Drain
Hydraulic System Oil Level - Check
Indicators and Gauges - Test
Seat Belt - Inspect
Track Adjustment - Inspect
Travel Alarm - Test
Undercarriage - Check

Every 10 Service Hours or Daily for Machines Used in Severe Applications

Bucket Linkage (B and S Family) - Lubricate
Bucket Linkage (D Family) - Lubricate

Every 50 Service Hours or Weekly

Bucket Linkage (D Family) - Lubricate
Quick Coupler - Lubricate

Every 100 Service Hours or 2 Weeks

Bucket Linkage (B and S Family) - Lubricate

Every 100 Service Hours or 2 Weeks for Machines Used in Severe Applications

Boom Cylinder Head (Long Reach Configuration) - Lubricate
Boom and Stick Linkage - Lubricate
Hydraulic System Oil Filter (Case Drain) - Replace
Hydraulic System Oil Filter (Pilot) - Replace

Every 100 Service Hours of Continuous Hammer Use

Hydraulic System Oil Filter (Case Drain) - Replace
Hydraulic System Oil Filter (Pilot) - Replace

Initial 250 Service Hours

Final Drive Oil - Change
Hydraulic System Oil Filter (Case Drain) - Replace
Hydraulic System Oil Filter (Pilot) - Replace
Hydraulic System Oil Filter (Return) - Replace
Swing Drive Oil - Change

Every 250 Service Hours

Engine Oil Sample - Obtain
Final Drive Oil Sample - Obtain

Every 250 Service Hours or Monthly

Belt - Inspect/Adjust/Replace
Belt - Inspect/Adjust/Replace
Condenser (Refrigerant) - Clean
Engine Oil and Filter - Change
Final Drive Oil Level - Check
Swing Bearing - Lubricate
Swing Drive Oil Level - Check

Every 250 Service Hours of Partial Hammer Use (50% of Service Hours)

Hydraulic System Oil Filter (Case Drain) - Replace
Hydraulic System Oil Filter (Pilot) - Replace

Every 250 Service Hours of Continuous Hammer Use

Hydraulic System Oil Filter (Return) - Replace

Initial 500 Service Hours

Engine Valve Lash - Check
Engine Valve Lash and Fuel Injector Timing - Check

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
Hydraulic System Oil Sample - Obtain
Swing Drive Oil Sample - Obtain

Every 500 Service Hours or 3 Months

Engine Crankcase Breather - Clean
Engine Oil and Filter - Change
Fuel System - Prime
Fuel System Filter - Replace
Fuel System Filter - Replace
Fuel System Primary Filter (Water Separator) Element - Replace
Fuel Tank Cap and Strainer - Clean

Every 500 Service Hours of Partial Hammer Use (50% of Service Hours)

Hydraulic System Oil Filter (Return) - Replace

Every 600 Service Hours of Continuous Hammer Use

Hydraulic System Oil - Change

Every 1000 Service Hours or 6 Months

Battery - Clean
Battery Hold-Down - Tighten
Boom Cylinder Head (Long Reach Configuration) - Lubricate
Boom and Stick Linkage - Lubricate
Final Drive Oil Level - Check
Hydraulic System Oil Filter (Case Drain) - Replace
Hydraulic System Oil Filter (Pilot) - Replace
Hydraulic System Oil Filter (Return) - Replace
Swing Drive Oil - Change

Every 1000 Service Hours or 1 Year

Engine Valve Lash - Check

Every 1000 Service Hours of Partial Hammer Use (50% of Service Hours)

Hydraulic System Oil - Change

Every 2000 Service Hours or 1 Year

Engine Governor Oil Supply Screen - Clean/Inspect/Replace
Engine Valve Lash and Fuel Injector Timing - Check
Final Drive Oil - Change
Hydraulic System Oil - Change
Refrigerant Dryer - Replace
Swing Gear - Lubricate

Every Year

Cooling System Coolant Sample (Level 2) - Obtain

Every 3 Years After Date of Installation or Every 5 Years After Date of Manufacture

Seat Belt - Replace

Every 4000 Service Hours or 2 Years

Hydraulic System Oil - Change

Every 6000 Service Hours or 3 Years

Cooling System Coolant Extender (ELC) - Add

Every 12 000 Service Hours or 6 Years

Cooling System Coolant (ELC) - Change