John Deere Tractor 8330

Transmission/Hydraulic Oil Level Check

Draining Air Brake Tank (If Equipped)

Coolant Level Check (Coolant Recovery Tank)

If coolant level is low, follow the steps below:

Check for any signs of leakage. Repair if necessary.

Drive tractor to warm oil, then park tractor on level ground.

Remove drain plug (A) on bottom of rear differential case.

Remove transmission housing drain plug (B).

Remove Independent Link Suspension differential plug (C) if equipped.

Remove large transmission filter screen plug (B).

Remove filter screen and wash carefully in solvent. Blow dry with compressed air before reinstalling screen.

Remove four cap screws (A) and cover.

Remove bottom drain plug (B), then using a work light inspect the filter through the bottom drain plug opening.

If the filter screen appears clean, reinstall plug and proceed with step 11.

Steps to change engine oil and filter

Checking Neutral Start System (PST or IVT Transmissions)

Steps to check neutral start system

Checking Transmission PARK Position

Checking Wheel and Wheel Weight Bolts

Lubricating 2WD Front Axle And Front Wheel Bearings

Lubricating MFWD Axle And MFWD Axle U-Joints

Steps to lubricate MFWD Axle And MFWD Axle U-Joints

Cleaning or Replacing Primary and Secondary Engine Air Filters

Unfasten plastic clips (A), and remove filter cover. Interval can vary according to operating conditions.

Turn and pull to remove primary filter (B).

Clean filter using compressed air. Hold nozzle next to inner surface and move up and down pleats.

Hold a bright light inside filter and check carefully for damage. Discard filter if screen is damaged or filter shows the slightest rupture or hole.

Make sure that gasket is in good condition.

Replace filter elements and install cover.

Remove battery compartment cover.

Checking Coolant Level (De-aration Tank)

De-aeration tank cap pressure relieved

Coolant added as specified in Fuel, Lubricants and Coolant section

De-aeration tank cap reinstalled