Hydraulic fluid is the lifeblood of your hydraulic system. Having the right quality and quantity of fluid in your hydraulic system is vital to full lift cylinder action, drive action, and steering. It also protects the hydraulic system components (charge pump, hydrostatic pumps, control valve, and the hydraulic pump motors) from damage. We recommend doing a quick check of your fluids daily as part of your pre-start inspection.
John Deere Hydraulic System Diagram
A – Sight Glass
B - Hydraulic fluid reservoir cap
Here are instructions for how to check hydraulic fluid level on a John Deere tractor:
- Park the tractor on level ground with implements down.
- Run the engine at approximately 1000 rpm for at least one minute. Stop the engine and wait three minutes for the oil to settle. Oil temperature should be approximately 45° C.
IMPORTANT: Never check the hydraulic fluid level with the tractor running. The engine must be turned off to get an accurate read.
- View the oil level in sight glass (A). The level should be between the marks on the glass with the optimal level being just beneath the top mark.
- If oil level is below the lower mark, you will need to add oil.
How to add hydraulic fluid on a John Deere tractor
- Wipe away any debris from the reservoir area.
- Remove hydraulic fluid reservoir cap (B) and add John Deere Hy-Gard Hydraulic and Transmission Oil using a clean funnel.
- Add a little fluid at a time to avoid overfilling the reservoir.
Some John Deere tractor models differ, be sure to check your owner’s manual for instructions specific to your machine.The equipment experts at your local Papé Machinery Ag & Turf dealership are always here to help. Give us a call or stop by to see us if you have questions, need parts, or think you may need a hydraulic system repair or service.