Hydraulics

Fornshell · Jan 14, 2022

I have a 1980 2240 with Hydraulic pump noise after starting tractor takes a minute or two for noise to start very loud metallic rattle eveything works noise stops for a second upon engaging pto seems like cavitation can anybody help would appreciate any help thanks

rScotty · Jan 14, 2022

Sounds like either low hydraulic fluid, fluid with too high of a viscosity, an air leak in the suction hose, or clogged up hydraulic suction filters. My bet would be on the last two. Are you seeing any fluid dripping when the tractor is not running? How many suction filters does that closed center system have?

Fornshell · Jan 14, 2022

Only one filter and screen. No fluid leaking.

Tx Jim · Jan 14, 2022

Welcome to TBN
1st thing to check after checking to be sure hyd oil level is at the full mark is the frt hyd pump drive coupler. A worn drive coupler can create some odd noises. How long since hyd oil suction screen has been checked/cleaned?

https://partscatalog.deere.com/jdrc/sidebyside/equipment/59573/referrer/navigation/pgId/248939

Tx Jim · Jan 14, 2022

Fornshell said:
Only one filter and screen. No fluid leaking.

Actually there are 2 filters(trans & frt hyd pump) Rarely is filter(item 45) in frt hyd pump clogged.

https://partscatalog.deere.com/jdrc/sidebyside/equipment/59573/referrer/navigation/pgId/251435

Fornshell · Jan 14, 2022

Tx Jim said:
Welcome to TBN
1st thing to check after checking to be sure hyd oil level is at the full mark is the frt hyd pump drive coupler. A worn drive coupler can create some odd noises. How long since hyd oil suction screen has been checked/cleaned?

https://partscatalog.deere.com/jdrc/sidebyside/equipment/59573/referrer/navigation/pgId/248939

This tractor doesn't have the two piece coupler and four rubber bushings.It has a solid one piece shaft. Hydraulic fluid is full, only had this tractor a month don't know when it's had anything done.

Fornshell · Jan 14, 2022

Tx Jim said:
Welcome to TBN
1st thing to check after checking to be sure hyd oil level is at the full mark is the frt hyd pump drive coupler. A worn drive coupler can create some odd noises. How long since hyd oil suction screen has been checked/cleaned?

https://partscatalog.deere.com/jdrc/sidebyside/equipment/59573/referrer/navigation/pgId/248939

This tractor doesn't have the two piece coupler and four rubber bushings.It has a solid one piece shaft. Hydraulic fluid is full, only had this tractor a month don't know when it's had anything done

Fornshell · Jan 14, 2022

Thank you.

Tx Jim · Jan 15, 2022

Check screen & check to be sure hyd filter relief valve(item 18-20) isn't stuck open. Does this tractor have a frt end loader?

Zebrafive · Jan 15, 2022

Fornshell said:
This tractor doesn't have the two piece coupler and four rubber bushings.It has a solid one piece shaft. Hydraulic fluid is full, only had this tractor a month don't know when it's had anything done.

Sounds like you have this pump drive. I would check for loose fasteners at the very lease.

Fornshell · Jan 15, 2022

Ok, I will check that valve.No I don't have a frt end loader . I have fluid and filter going to Change that also .

Fornshell · Jan 15, 2022

Does anybody have a 2240 with a small lever on top of trans straight back from shifters. What is this.

Cycledude · Jan 15, 2022

So the tractor is about 40 years old ? Does the hour meter work , how many hours ?

Tx Jim · Jan 15, 2022

Fornshell said:
Does anybody have a 2240 with a small lever on top of trans straight back from shifters. What is this.

Control lever you describe is for independent pto. Sounds as if you need to study a 2240 operators manual. If you don't have an OM you can download it for free at the following site.

Fornshell · Jan 15, 2022

Ok, thanks for the info.

Fornshell · Jan 15, 2022

Cycledude said:
So the tractor is about 40 years old ? Does the hour meter work , how many hours ?

Not sure yet. The tach works so I'm assuming the hours meter works. Just got the tractor and trying to get it ready for spring. Haven't had it out running yet.