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Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
743 Humming Sound
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<blockquote data-quote="Tazza" data-source="post: 2168" data-attributes="member: 82"><p>Ok, this may sound stupid, but my 743 has always had this humming sound that sounds like its coming from the hydro pump. If i move the levers forward and back it stops then comes back. I thought it may have been the by-pass valve in the hydro filter so i changed the filter. Yes yes, i should have changed it as soon as i got it, the old filter was dated september 95!!!!! Even after the filter change its the same. Has anyone had this problem before? the only place i haven't looked was the port block, the bit that joins to the oil cooler. When its making this noise, you can grab the hydro hose that goes to the filter and you can feel the vibrations, but these can be coming from anywhere...</p><p>The machine still runs fine, its just a little anoying. Put the revs up high and you can't hear it.</p></blockquote><p></p>
[QUOTE="Tazza, post: 2168, member: 82"] Ok, this may sound stupid, but my 743 has always had this humming sound that sounds like its coming from the hydro pump. If i move the levers forward and back it stops then comes back. I thought it may have been the by-pass valve in the hydro filter so i changed the filter. Yes yes, i should have changed it as soon as i got it, the old filter was dated september 95!!!!! Even after the filter change its the same. Has anyone had this problem before? the only place i haven't looked was the port block, the bit that joins to the oil cooler. When its making this noise, you can grab the hydro hose that goes to the filter and you can feel the vibrations, but these can be coming from anywhere... The machine still runs fine, its just a little anoying. Put the revs up high and you can't hear it. [/QUOTE]
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743 Humming Sound
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