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

Heavy-duty mechanic leans on a John Deere 85G mini 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.

Previously, we changed the excavator’s engine oil and filter.

In this post, you’ll learn to replace the engine inner and outer air filters on a John Deere 85G Excavator.

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

Replace the Engine Air Filters

Arrow pointing at the engine air filters on a John Deere 85G Excavator.

There are two engine air filters. The outer/primary and inner/secondary filters.

Open the compartment on the left-hand side of the excavator.

Pop open the clamps, remove the lid, and both filters.

A heavy-duty mechanic removes the engine air filters on a John Deere 85G Excavator.

Before installing the new filters, wipe out the inside of the filters’ housing with a clean cloth.

Install the New Air Filters

First, insert the inner filter by pressing it firmly.

Do the same with the outer filter. Press it until it bottoms.

Outer engine air filter for a John Deere 85G Excavator.
Inner engine air filter for a John Deere 85G Excavator.

We recommend removing the dust injector and cleaning the inside of the filter’s lid thoroughly.

A heavy-duty mechanic holds an engine filter lid. An overlay arrow points at the dust ejector.

Check the seal for damage before putting the lid back.

The cap has a top mark that should face upward — the dust ejector should be down.

Lastly, put the clamps back over.

Next Post

In the next post, we’ll change the fuel and water separator 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.