500 Hour Service Interval Guide for a John Deere 85G Excavator – Part 7

Written by Luis Montes Updated On December 2, 2024

A heavy-duty mechanic leans on a John Deere 85G mini excavator

In the sixth post of this series, we serviced the final drive of the 85G Excavator.

In this final post, you’ll learn how to flip over the cutting edge to complete the 500-hour service interval on the 85G Excavator.

We also have a video version on the Fortis HD YouTube channel. Check it out.

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
Baldwin Donaldson Wix Blumaq
Hydraulic Return Oil Filter 4450002 PT9443 N/A N/A N/A
Hydraulic Breather Filter 4437838 PA5316 N/A N/A N/A
Engine Oil Filter MIU800650 B161-S P502051 51568 N/A
Fuel Filter MIU805005 BF9910 P553995 N/A N/A
Water Separator Filter MIU802421 N/A N/A N/A N/A
Water Fuel Separator Housing + Plastic Bowl MIA885254 N/A N/A N/A N/A
Pilot System Oil Filter 4630525 N/A N/A N/A N/A
Primary Engine Air Filter FYD00001541 N/A N/A N/A N/A
Secondary Engine Air Filter FYD00001327 N/A N/A N/A N/A
Cab Fresh Air Filter 4S00640R N/A N/A N/A N/A
Cab Recirculating Air Filter FYA00011003 N/A N/A N/A N/A
logo

Choose Fortis HD for tools to tackle any service task and enhance your equipment’s performance and longevity.

Shop today for tools that keep you ahead in the industry.

Table of Contents

Remove the Cutting Edge

A heavy-duty mechanic is beside an excavator bucket with a detached cutting edge

Place the bucket on top of 2 or 3 wooden blocks to leave the cutting edge lifted.

Using an impact wrench, undo all the nuts holding the cutting edge bolts.

If you need to hold the bolts from spinning while taking out the nuts, DON’T use your hand since the bolts’ head gets razor-sharp when worn out. Instead, use a hammer or a piece of wood to keep them in place.

Heavy-duty mechanic shows how to use a hammer to hold the head of a worn bolt to remove the nut

If you can’t take the nuts out with an impact gun, you can either torch them off or use a 20-pound sledgehammer to pop the bolts off.

Lift the bucket to separate it from the cutting edge.

With a wire wheel, clean up both faces. Make sure to wear a mask or respirator.

Reinstall the Cutting Edge

To the left side is a cutting edge with worn-out bolts and nuts, and to the right side, the same cutting edge with new bolts and nuts

Rotate the cutting edge and place it on top of the wooden blocks.

Put the bucket down against the cutting edge, and align their holes with a crowbar/pry bar pointy end.

Screw the new nuts and bolts by hand, then tighten them with the impact gun.

Lift the bucket and run the nuts back over with the impact gun.

Smack the bucket a few times against the ground to help set the blade into its final position, and tighten the nuts one last time.

Wrapping Up

As you can see, servicing your John Deere 85G Excavator is not rocket science. However, if you don’t have the time or equipment, hire a service mechanic at Tekamo HD.

Be sure to check out the other posts we have in this series:

Visit the Fortis HD blog for more tips, tutorials, and guides about tools and heavy equipment

Group.webp__PID:71da2f2b-e23e-45ce-bdeb-a737b101583a

If you don’t have the time to do the service yourself or want to get on a preventative maintenance program for your John Deere 85G, reach out to Tekamo HD to set you up with a heavy-duty mechanic.