Recent content by smashedtoe

There are a total of five o-rings on the charge pump and then an o-ring on the suction line to the sump. I am going to tear the tractor down again and make sure these are all fine as this makes sense. Aside from time, I really have nothing left to lose!

Hi. Okay, so I put my pressure gauge on to check for the steering pressure M via the steering test port resulting in less than 100PSI (I need a gauge with a smaller range to get exact PSI). When I engage the PTO, pressure jumps up to 350PSI regardless if I am attempting to turn the steering...

Hello oldnslo. You ask some great questions and bring up some great points. I am still waiting for my pressure gauge kit to arrive in the mail and will run the tests you suggest. I will definitely share the info with you. Heck, if I could buy you dinner or a bevvie I would do that too just...

The technical manual does provide some info (see attached). Not a lot for diagnostics though which is surprising.

This is where I begin to draw a blank as i have no idea where to find "Valve O" or where to place my pressure gauge to test? Come on Google!! What you are saying does make sense though oldnslo. I believe I know which port to tie into to check the steering pressure....read that in the...

Hi Satohbull. Yeppers, I sure have. Using John Deere's liquid gold (or the price of it seems to be) Hy Guard. Levels are good, filters are new and sump screen has been inspected.

Hello oldnslo (love that name!)... I believe what caused the pump to fail originally was my son started the tractor during extremely cold weather without allowing a warm up period, placed it in High Range and proceeded to back out of the cold storage shop. Tractor reversed about eight feet and...

Oh, I nearly forgot to respond beenthere... So the first two hydraulic pump postings are not related to the latter two. Albeit these are both odd scenarios as the JD dealership Parts Depts. have no record of ordering these parts for anyone in the past...heh heh heh....definitely not the...

This really has been a frustrating one with this tractor; oddly enough so low hours on it (I purchased it brand new so I know the hour meter is bona fide). I had a fella call me today and thought maybe some debris from the sheared charge pump key is caught in a relief valve which is a little...

Not this time around. I have in the past but it sounds like this is something I should revisit tomorrow morning.

Hi. I have an interesting one which I am suspecting with get one of two responses: Crickets You should talk to the guy who changed the charge pump Here is why I am here typing to you today. I replaced the charge pump in my JD 2720 as I was experiencing some steering related issues and the...

Hey LouNy. So it ended up being the charge pump which we replaced. PTO works great, however, the power steering really seems spongy and almost non-responsive.....unless I engage the PTO. With the PTO engaged the steering improves slightly but the hydrostatic drive whines a little more...

Hello. I am trying to figure out what happened to my little John Deere 2720. I had the charge pump recently replaced, however, the steering is very spongy and difficult to turn. Oddly enough, when I engage the PTO, the steering seems to improve. I also notice the hydrostatic drive seems very...

I finally committed myself to tearing this down and discovered the inner and outer rotors in the charge pump, along with a sheared key way were the source of the problem. I am hoping to find a hydraulic pump manufacturer will have the replacement rotors as opposed to buying a new pump for...

Is there any way to test the system to confirm where the problem is?