190xt diesel

Took home a 190xt diesel series 3 a few weeks ago. It has a lope to it at idle. It's not as bad after it warms up but still doesn't sound right. It runs great at higher rpm's. I changed all fluids and filters. No change. Also the pto doesn't stop when you disengage it. It's a 1000 rpm pto. Any thought?

Okay is it hard to replace or do I need to send the pump in. I'd prefer not to until field work is done.

It requires sending to a qualified pump shop for best results. It will probably get you through the busy season, then you can pull it off and get it rebuilt. Guessing on the pto that it's a hydraulic clutch, and it has either a linkage issue, or the pto clutch is smoked and welded together. 

Check timing too....esp if its new to you tractor, a 190 in the shop the other day was sitting on 11°

Slade

Same problem. The broken flex ring material is plugging the return fitting and return flow from the pump, causing the housing pressure to rise, until it finally just kills the engine. Very common problem with the Roosa pump. Time for a routine freshen up. 

My 190XT seems to lope at a cold idle but when warm it smooths right out. I always assumed it was maybe turned up a bit causing it to lope a bit at idle but maybe not? Am I looking wet the same problem here?

Very likely. Most of these older tractors that have not had the pump serviced and updated within the last 20 years or so, will start having problems with the flex ring. Today's fuels seem to attack it faster than the old days. Just something to be prepared for. 

what a lot of people's fix is to knock the ball out of the return, and it will keep running. The problem is the flex ring is a cushion between two metal components. Now the cushion is gone, and then the rivets saw themselves into the end of the slot, putting metal filings in the pump, and eventually sawing the rivets completely off, resulting in potential runaway condition. Plus, knocking the ball out of the top fitting will allow all the particles to go right to the tank haunting you with supply issues later down the road. 

there is a tool to put the timing mark on the retainer. And the tool for installing the flex ring is a small snap ring pliers. 

Hello, I am new to this forum. I can see this post was from a few years ago but I thought I'd ask anyway. I just bought a 190xt and I'm having this surging problem. The injector pump is said to have just been rebuilt. I was wondering how likely is a runaway? And what to do if it occurs? The air supply would be hard to cap off in a hurry.

Okay that makes me feel a bit better about that. I've blown out the fuel lines, flushed the tank, cleaned the sediment bowl, and replaced the filter. What would you suggest I do now to track down this surging problem?

Okay. I'll give that a try. The one sediment bowl is on the driver side so to speak under the tank. And ware is the second one? Right behind the injector pump? Does it have a little wire clip holding the top on? Also have you ever tried any of the injector cleaners that you buy at the auto parts store and dump in with your fuel? How do they work?

I've tried the injector cleaners but, can't say they helped or not

I will second that,Ed is the man. I bought a 190xt last year. Ed did mine about a year ago and what a huge difference. I recently had a similar situation with a slight surge bailing hay. Then, she failed to start the next day. Installed a new fuel filter the next day, bled the filter and my issue went away. Fuel bowls were clean but apparently there is dirt in the fuel tank. So glad the filter did its job, only 50 hours on it. I couldn’t be happier with his work. Turn around time was excellent.