Changing Hydraulic Filters on an Excavator

3 Min
How to change hydraulic filters on an excavator

An excavator has a hydraulic system that helps to operate the arm and boom attachments to perform work. The hydraulic system has filters that help screen the hydraulic oil to prevent contaminants from entering the system. Learn how to change the filters using these steps.

Changing Hydraulic Filters On An Excavator — STEP BY STEP
Step 1: Vent the Hydraulic Tank

Cold morning temperatures that start to heat up during the day may cause a positive pressure in the tank. Venting the tank prevents excess oil from spilling out. Remove the cover on the machine Remove the fill cap from the hydraulic tank to vent it. Always remove the fill cap before removing the filter cover.

Step 2: Remove the Filter Cover

Take off the filter cover and pull up the suction screen. The suction screen helps to prevent contaminants from getting under the tank. Check to see if the metal screen is clean. Clean off any contaminates and then reinstall.

Step 3: Remove Hydraulic Return Filter Cap

Take off the cap to the hydraulic return filter. There is a snap ring on top after removing the cap as you will have to remove it using pliers. Some machines have a spring that pops the snap ring up. Remove the filter as a lot of oil will drain off it. Have a drain pan nearby to catch the excess oil.

Step 4: Install New Filter

Inspect the new filter as you want to make sure it is the same length and diameter as the old filter. There may be some differences if you are using an aftermarket filter instead of an OEM filter. Some aftermarket filters do not have a handle on the top. You can remove the handle from off the old OEM filter and install it onto the aftermarket filter. Place the new hydraulic return filter into the hydraulic canister on the machine. Push it down onto the pipe at the bottom of the tank.

Step 5: Reinstall the Snap Ring and Covers

Reinsert the snap ring and place the hydraulic filter cap in place. Line the bolt holes and place the bolts back in. Place on the other covers to the filter screen and the hydraulic fill cap. Place back on the machine cover.

Step 6: Remove Old Hydraulic Pilot Filter

Have a catch basin ready to catch the oil when replacing the old hydraulic filters. Place it under the filter and pull the filter out using a strap filter wrench or special pliers. Once the filter is removed, take the new filter and compare it to the old OEM filter to ensure it is the same size and has the same seals and thread so it will install properly.

Step 7: Change Case Drain Filter

With the old hydraulic filter removed, you want to change the case drain filter before installing the new hydraulic pilot filter. Not all machines have a case drain filter behind the pilot filter. Crack it loose and remove the filter while catching the oil in the drain pan. Compare the new drain filter with the old one to ensure the new filter will fit properly. Lubricate the seal using a little bit of old oil and install it.

Step 8: Install Pilot Filter

Lubricate the seals on the pilot filter with a bit of old oil. Hand-tighten the filter on the threads.

For more maintenance tips, check out our other articles.

Share

Related Articles

How to Change a Cabin Air Filter in a 650K Dozer – NO TOOLS NEEDED!

How to Change a Cabin Air Filter in a 650K Dozer – NO TOOLS NEEDED!

Learn how to replace the cabin air filter on your 650K John Deere Dozer. You don’t need any tools, just this easy step-by-step process.
Q & A: What to Expect in Heavy Duty Apprenticeships

Q & A: What to Expect in Heavy Duty Apprenticeships

Expert advice from an industry professional about what to expect during a heavy-duty apprenticeship and how you can get started within the trade.
How To Change the Engine Air Filter On A John Deere 650k Dozer

How To Change the Engine Air Filter On A John Deere 650k Dozer

Learn how to check and change the engine air filters on a John Deere 650K Dozer in a step by step guide.
How to Change Final Drive Oil on a John Deere Dozer 650K

How to Change Final Drive Oil on a John Deere Dozer 650K

Learn how to change and check final drive oil on a John Deere 650k Dozer in this easy step-by-step guide by a pro HD mechanic
Why You Should Not Use A Tool To Tighten Up A Spin-On Oil Filter

Why You Should Not Use A Tool To Tighten Up A Spin-On Oil Filter

Find out why you should not use a tool to tighten up a spin-on oil filter.
How To Assemble A Cable Harness For Your Heavy Equipment

How To Assemble A Cable Harness For Your Heavy Equipment

Read our detailed step-by-step guide to learn how to assemble a cable harness in any heavy duty equipment.
Can You Repair A Rubber Track?

Can You Repair A Rubber Track?

Can you repair a rubber track? Find out if you should and how often you should replace the tracks.
How To Change Hydraulic Filters On A John Deere Dozer In 2 Minutes!

How To Change Hydraulic Filters On A John Deere Dozer In 2 Minutes!

Learn how to replace the hydraulic filter on your 650K John Deere Dozer in this easy step-by-step process that takes only 2 minutes.
John Deere 650K Dozer Fuel Filter Replacement – A Step By Step Guide

John Deere 650K Dozer Fuel Filter Replacement – A Step By Step Guide

Prevent dust and dirt from getting into your machine's systems by learning how to change the air filter on your CAT 314 excavator.
Simple Steps to Replace Engine Oil & Engine Filter in a CAT 314E Excavator

Simple Steps to Replace Engine Oil & Engine Filter in a CAT 314E Excavator

Prevent dust and dirt from getting into your machine's systems by learning how to change the air filter on your CAT 314 excavator.
Heavy Duty Mechanic: How To Change The CAT 314 Air Filter

Heavy Duty Mechanic: How To Change The CAT 314 Air Filter

Prevent dust and dirt from getting into your machine's systems by learning how to change the air filter on your CAT 314 excavator.
Under 4 Minute Maintenance: Greasing Excavator Fittings

Under 4 Minute Maintenance: Greasing Excavator Fittings

This can be used on any make/ model of heavy equipment, including excavators and skid steers. Greasing fittings helps all working parts run smoothly.

Hello.

Let's get you signed up for deals and news. We won't send too many. Sign up and get 5% off your first order.