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  3. John Deere 85G – 500 Hour Service Interval Tasks Part 2

John Deere 85G – 500 Hour Service Interval Tasks Part 2

If you’re doing this service yourself, visit FortisHD to purchase a service kit with every filter you need, or visit Tekamo HD to hire an expert service technician.

We changed the hydraulic return filter and the oil tank breather filter in the last post.

In part 2 of the John Deere 85G 500-hour service interval tasks series, you’ll learn to replace the engine oil and filter.

Do you prefer to see a video tutorial instead?

Need to save time? The following table shows every filter you need for the complete 500-hour service interval:

Item OEM Part Number
Aftermarket equivalent
BaldwinDonaldsonWixBlumaq
Hydraulic Return Oil Filter 4450002 PT9443N/AN/AN/A
Hydraulic Breather Filter 4437838 PA5316N/AN/AN/A
Engine Oil Filter MIU800650 B161-SP50205151568N/A
Fuel Filter MIU805005 BF9910P553995N/AN/A
Water Separator Filter MIU802421 N/AN/AN/AN/A
Water Fuel Separator Housing + Plastic Bowl MIA885254 N/AN/AN/AN/A
Pilot System Oil Filter 4630525 N/AN/AN/AN/A
Primary Engine Air Filter FYD00001541 N/AN/AN/AN/A
Secondary Engine Air Filter FYD00001327 N/AN/AN/AN/A
Cab Fresh Air Filter 4S00640R N/AN/AN/AN/A
Cab Recirculating Air Filter FYA00011003 N/AN/AN/AN/A

Drain the Engine Oil

Heavy duty mechanic underneath a John Deer 85G Excavator. An overlay arrow shows the position of the drain plug.

Using an impact wrench, remove the screws holding the belly pan. Don’t stand right behind the belly pan to prevent it from suddenly falling on your face. Take out the screws from a side instead.

Before removing the drain plug, put a suitable pan or container to collect the engine oil.

Use a ratchet with a 19 mm socket to remove the plug. Turn the ratchet clockwise to loosen the plug.

We recommend sampling your engine oil at every service. Refer to the operator’s manual for more information.

Replace the drain plug seal if worn, and reinstall the drain plug. Don’t overtighten the plug, or you’ll strip the thread and won’t be able to take out the plug. Once the seal washer contacts, tight the plug and give it another 1/4″ turn.

Replace the Engine Oil Filter

An arrow pointing at the engine oil filter of a John Deere 85G Excavator.

The engine oil filter on the 85G is on the inward side of the engine.

Using both hands, unscrew the filter turning counterclockwise but don’t take it out yet. Before removing the filter, slip a plastic bag over it to catch the oil coming out.

Using a clean cloth, wipe the filter base.

Lubricate the seal on the new filter and install it without overtightening—hand-tight the filter, no need to use a tool here.

Engine oil filter for a John Deere 85G Excavator.

Put back the belly pan using the impact wrench.

Put the New Engine Oil

An arrow pointing at the location of the engine oil fill on a John Deere 85G Excavator.

The John Deere 85G Excavator takes 12.3 liters of oil. We recommend Tekamo 15W40 premium heavy-duty engine oil (refer to the description in the YouTube video link of this post to choose the correct oil weight according to climate).

A 20 liters (5 gallons) bucket of Tekamo 15W40 premium heavy-duty engine oil.

Remove the engine oil fill cap, turning it counterclockwise. Inspect the seal and replace it if needed.

Pour the oil using a funnel to avoid making a mess. Once you finish, check the level with the dipstick. Two marks or pinholes on the dipstick will show the MAX and MIN levels. The oil level should be somewhere between the two.

Run up the machine for a few minutes, double-check the level, and top off as required.

Next Post

In the next post, we’ll change the engine air filters of the John Deere 85G Excavator.

If you’re doing this service yourself, visit FortisHD to purchase a service kit with every filter you need, or visit Tekamo HD to hire an expert service technician.