Stutter, 400X Loader

[Red Horse]

My 4720/400X (440 hrs), has a frequent "stutter" when raising the loader. Doesn't do it all the time-will also notice it from time to time when raising the 3 pt. That says to me a pump/filter issue? The oil/filters are original- oil looks clear and bright but I do have the oil/filter on hand for a change so I don't think I'll wait till 500 hrs.

Any thoughts?

 

[Willl]

There use to be a issue with a short piece of rubber hose just before filter collapsing and starving the pump but haven't heard of that in quite a while but wouldn't hurt to check out.

 

[jd110]

The online manual says trans oil and filter change at 400 hours. I am betting the filter is restricted.

 

[Red Horse]

There use to be a issue with a short piece of rubber hose just before filter collapsing and starving the pump but haven't heard of that in quite a while but wouldn't hurt to check out.

thx guys-I'll check out both points-thought 500 hrs. was hyd oil point.

 

[sunnyside360]

My 400X loader acted similar to your description when the 4320 tractor had about 100 hrs. Got some suggestions here on TBN including checking the power steering fittings for tightness. Found one fitting on the power steering cylinder was snug but not real tight -- apparently leaking air but not fluid. No more issue after tightening that fitting. May want to check all fittings in hydraulic circuits for tightness.

 

[Red Horse]

My 400X loader acted similar to your description when the 4320 tractor had about 100 hrs. Got some suggestions here on TBN including checking the power steering fittings for tightness. Found one fitting on the power steering cylinder was snug but not real tight -- apparently leaking air but not fluid. No more issue after tightening that fitting. May want to check all fittings in hydraulic circuits for tightness.

SS-Thx- I will check that out!