John Deere Tractor 4066M

Check cab protection system mounting hardware torque

Clean or replace cab air filters

Check hardware torque on front hitch (If equipped)

Check front hitch hydraulic connections for leaks every 100 hours

Sign off on the 50 Hourly Maintenance

Enter the engine operation hours

Is the operation hours less than 200?

If operation hours is less than 200, change engine oil and filter

All hoses and clamps checked and in good condition?

Inspect air intake system hoses and connections each time the air filter is changed

Air intake system hoses and connections inspected and in good condition?

Wheel bolt torque checked and in good condition?

3. Move transmission to neutral position:

● PRT—Depress clutch pedal completely and move the transmission range and gear shift levers to the N (neutral) position.

● HST—Move the range shift lever to the N (neutral) position.

4. Pull PTO engagement switch to the on position.

5. Turn key switch to the start position.

Check cab rollover protection system mounting hardware torque

Check windshield wiper arm mounting hardware torque

Warning: This maintenance check requires trained personnel with PPE!

If engine valve clearance is not checked, report the issues to the maintenance team and stop the procedure

Choose the type of coolant service done

Engine passed the post-maintenance test?

Sign off on the engine maintenance