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Old 04-03-2012, 11:21 PM
ashgrove landscaping's Avatar
ashgrove landscaping ashgrove landscaping is online now
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Hydro knock

Before I say anything, I've searched a ton already and am not satisfied. My left hydro pump is making a knocking sound and my ferris 2000z. Everything runs great, no weakness or pulling on either side just this knock/rattle coming from the left pump. I put my ear right up to it so I'm sure it is that one. Is the pump going bad or is there a fix?? Any thoughts/suggestions?
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Old 04-04-2012, 07:13 AM
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cgaengineer cgaengineer is offline
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Are you sure it's not the belt tensioner making the noise...I've had a similar problem on my toro and it turned out to be tensioner bolt was loose.
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Old 04-04-2012, 01:26 PM
ashgrove landscaping's Avatar
ashgrove landscaping ashgrove landscaping is online now
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Pretty sure. The noise is directly on the pump. I guess Ill just wait until there is a change in performance before anything is done.
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Old 04-04-2012, 01:33 PM
orangemower orangemower is offline
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Use a long screwdriver or rod and carefully touch the parts you suspect are bad. It will give you a better idea if it's what's making the noise. Similar to a stethoscope. I actually have a stethoscope with a thin rod on the end about 20in long to listen for bearing noise in autos.
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Old 04-04-2012, 02:55 PM
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piston slapper piston slapper is offline
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Time to put a magnet in the hydro tank....look for metal shavings
There may be a party going on inside the pump...I've caught quite a few of them before they let go, and was able to repair them...When it stops knocking , its usually replacement time....
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Old 06-02-2012, 11:46 AM
TEKracing37 TEKracing37 is offline
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Location: Vincennes, Indiana
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I have this exact problem on my 1500z...It's only got 137 hours on it.
I can put my hand on the left pump fan cover and feel it knocking/vibrating. It started during this last week's mow.

I bought it in May of 2009 so, i think it's out of warranty. I only use it about 50 hours per year to mow 2 acres.
I believe the warranty was for 2 years...Do you think they should/will fix it under warranty? Should I ask?
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Old 06-02-2012, 12:15 PM
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piston slapper piston slapper is offline
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Warraties are in years...not amount of use...
Not saying its out of the question.....its gonna take a good conversation...
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Old 06-06-2012, 09:01 PM
Carl_NH Carl_NH is offline
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I have the Ferris IS2000 25/52 60 hrs now -purchased as an 09 leftover in June 2010 and noticed the hydro noise too. I did isolate it to the fans on the top of the hydro rattling at a low speed.

BUT I also am anal about fluids/dirty oil and my hydro oil had a sort of burnt smell and was as dirty as used gas engine oil. Hydro's should not have dark fluid in my opinion (my Kubota TLB was clean as new oil @ 300 hr change). So last weekend I changed out the filter with a new 51563 Hydrogear filter and 1 3/4 quarts of 15/50 Mobil one.

Also here is a link to tractor by net of another Ferris IS3100 owner - had the bearings on the bottom of the right side HydroGear pump bite the dust at 130 hours. http://www.tractorbynet.com/forums/g...j-12-pump.html

I hope there is NO corelation to dirty oil/noisy pumps/bad bearings in the 09-10 Hydrogear pumps with low hours..

Carl
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