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Documents & Manuals

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Tensioning Guide
Belt-diagram
C-120 pulleys
+ 13 more

Work Order Templates

Pre-built workflows to keep your asset running smoothly.

Daily Electrical System Inspection
Replace Roller and Pulley
Install Engine B-120
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Procedures

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Motion Industries
Applied Industrial Technologies
Electrical Brothers
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Parts

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Drive Motor
B2 Rollers
Tensioning System
+ 40 more

John Deere Tractor 9420

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Maintenance Plans for John Deere Tractor Model 9420

Integrate maintenance plans directly into your work orders in MaintainX.

750 Hourly Maintenance

Hydraulic Filter replaced

Reservoir Screen cleaned

Reservoir Breather Filter replaced

Transmission/Axle Filter replaced

Coolant tested and Coolant Conditioner added

Water Separator cleaned

Fuel Pre-filter cleaned

Engine Air Intake System cleaned

Sign off on the 750 Hourly Maintenance

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10 Hourly / Daily Maintenance

Check Engine Oil Level

Check Coolant Level

Drain Water Separator

Check Transmission Oil Level

Check Hydraulic Oil Level

Check Axle Oil Levels

Park tractor on level ground.

Operate engine at 2100 rpm, with transmission in PARK position, for at least 5 minutes (or longer with cold oil) to fill axles and return oil from the axles to the transmission.

Stop engine and allow the oil level to stabilize in the sight gauge for at least 5 minutes. Recheck oil level and refill at fill tube (A) as necessary.

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1500 Hourly Maintenance

Change Transmission/Axle, and Hydraulic Oil —24-Speed POWRSYNC Transmission

Steps

Change Transmission/Axle, and Hydraulic Oil —18-Speed Powershift Transmission

Steps

Clean Transmission Sump Screen

Inspect Alternator and Fan Belt Tensioners

Steps

Check Axle End Play

Check Axle End Play (Normal Use) (2000 Hourly Maintenance)

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250 Hourly Maintenance

Change Engine Oil and Filter

Replace Fuel Filter (9220, 9320, 9420, 9520, 9620)

Check Manual Brakes

Pump brake pedal. Pedal (A) should have a solid feel. If the pedal does not feel solid, bleeding the brakes may be necessary.

Be sure the pedal does not settle to the end of stroke within 10 seconds after being applied. If leakage exceeds this rate, see your John Deere Dealer.

Service Batteries

Check Neutral Start System

Check PARK System

Clean Cab Air and Recirculation Filters

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2 Yearly Maintenance

Drain, Flush, and Refill Engine Cooling System

Slowly turn the surge cap (A) to relieve pressure, then carefully remove cap.

Remove bottom access panel and open radiator drain fitting (A) and engine block drain cock (B).

Remove thermostat cover (A) and thermostats. Install cover without thermostats. Tighten cap screws.

Close drain cocks and fill system with a commercial cooling system cleaning solution. Operate engine to operating temperature. Stop engine and drain system.

Close drain cocks and fill system with clean water. Operate engine to operating temperature. Stop engine and drain system.

Remove thermostat cover and clean all sealing material from thermostat cover and housing mounting surfaces.

Apply sealant to new gasket and install thermostats and gasket.

Install smaller (non-blocking) thermostat in top position with vent (wiggle wire)(B) at 12 o'clock position. Install larger blocking thermostat in bottom position.

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