L553 surging while travelling

[Chummins]

I have an L553 with 1020 hours on it. always worked fine but when i was travelling it started surging and bucking. I tried more throttle, less throttle, and nothing seemed to help. If i go really slow it doesnt surge. bucket seems to work fine. I thought maybe it was clogged filters or screen, so i changed them and cut the big filter apart and there was like a little bit of a metal shaving paste in the pleats. i assumed was from normal wear. Any ideas what it might be, or a way to check what it is.? thanks

 

[Tazza]

I'm not sure if you should be able to see any metal particles, the hydraulics are precision parts, any wear, even slight wear can cause problems.
Does the surging seem to be from both sides? or just one? as it *could* be a drive motor issue. Is the surgy when you change direction? or when you are traveling in a straight line?
I have never worked on a NH, but they drive systems are all pretty close.

 

[Chummins]

I'm not sure if you should be able to see any metal particles, the hydraulics are precision parts, any wear, even slight wear can cause problems.
Does the surging seem to be from both sides? or just one? as it *could* be a drive motor issue. Is the surgy when you change direction? or when you are traveling in a straight line?
I have never worked on a NH, but they drive systems are all pretty close.

Seems to be both sides, it doesnt seem to do it while in reverse or turning. It only does it while travelling in a straight line.

 

[Tazza]

Seems to be both sides, it doesnt seem to do it while in reverse or turning. It only does it while travelling in a straight line.

I would start by checking your linkages to the pump. If they came loose they could rattle back and forth giving you jerky steering.

 

[Earthwerks Unlimited]

I would start by checking your linkages to the pump. If they came loose they could rattle back and forth giving you jerky steering.

I would check the shock absorber on each control lever. When they're really bad or shot you can actually get the machine rocking back and forth easily to the point you'll get the wheels off the ground--sometimes uncontrolably! I hear they're about $40 each, not bad considering what they do.

 

[scottlandyard]

I would check the shock absorber on each control lever. When they're really bad or shot you can actually get the machine rocking back and forth easily to the point you'll get the wheels off the ground--sometimes uncontrolably! I hear they're about $40 each, not bad considering what they do.

where can i buy them for $40 ea? i need both. Thanks!

 

[Chummins]

I would check the shock absorber on each control lever. When they're really bad or shot you can actually get the machine rocking back and forth easily to the point you'll get the wheels off the ground--sometimes uncontrolably! I hear they're about $40 each, not bad considering what they do.

I checked all the linkages and they all look pretty good, except for the on shock has about a 1/4 inch of play and the other has no play. Should i try replacing it? and where is the best place to buy?

 

[Earthwerks Unlimited]

I checked all the linkages and they all look pretty good, except for the on shock has about a 1/4 inch of play and the other has no play. Should i try replacing it? and where is the best place to buy?

I could be wrong but someone here said they are about $40 each.
Yes I'd replace it. That little bit of play resultys in a lot of play at the pump--they need to be slow-reacting which cancels out vibration and push back from the pumps' swash plate. When they're bad it's like having bad shocks on the front of a car---everything is fine riding down a smooth road--until you hit a rut and the tires start bouncing.
As far as source, I'd first see if there is a part number on them. Then gogle that number and see if there are other shocks (also called dampener, gas spring) and see what comes up--they may be used on something else and be cheaper than buying from a dealer.
I use www.mesicks.com they have great service and located nearby New Holland for fast parts delivery. They have a parts finder on the web site and includes shipping cost and pricing.

 

[Chummins]

I could be wrong but someone here said they are about $40 each.
Yes I'd replace it. That little bit of play resultys in a lot of play at the pump--they need to be slow-reacting which cancels out vibration and push back from the pumps' swash plate. When they're bad it's like having bad shocks on the front of a car---everything is fine riding down a smooth road--until you hit a rut and the tires start bouncing.
As far as source, I'd first see if there is a part number on them. Then gogle that number and see if there are other shocks (also called dampener, gas spring) and see what comes up--they may be used on something else and be cheaper than buying from a dealer.
I use www.mesicks.com they have great service and located nearby New Holland for fast parts delivery. They have a parts finder on the web site and includes shipping cost and pricing.

Thanks Tazza and Earthwerks, I'm gonna get a shock ordered and hope it's fixed.