Cutter noise JD 616 : Tractor Implements  -- Tractor Attachments Implements 3ph Discussion Forum and Review Cutter noise JD 616 : Tractor Implements -- Tractor Attachments Implements 3ph Discussion Forum

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 05-04-2003, 10:00 Post: 54272
Billy

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 Cutter noise (JD 616)

My rotary cutter has been making this weird noise lately. I'll be using it, hit a rock or something and it'll make a weird squealing sound. It may stop squealing or it may keep doing it for a while. I can stop the cutter and restart it and most times stop the squealing.

I can't figure out what's making the sound. The blades are tight, plenty of oil in the gear box. It's not the PTO safety shield. It has a slip clutch but it's not slipping, cuts just fine. The blades pivot like they suppose to and the stump jumper is secure.

Anyone have any ideas?

Billy






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 05-04-2003, 10:37 Post: 54275
marklugo



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 Cutter noise (JD 616)

Billy,
I think you might look into having a damaged bottom gearbox bearing. It could be the top input bearing. Is this gearbox starting to heat up when it makes the sound? It may not necessarily heat up. Depending upon the gearbox manufacturer, it may also have needle bearings that have been damaged on the input shaft.






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 05-04-2003, 11:52 Post: 54276
Billy

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 Cutter noise (JD 616)

Mark,

As far as heating up, it doesn't get that hot (no more than the other implement gear boxes). It may start this noise right after I first start using it.

What would be the best way to check these bearings?

Billy






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 05-04-2003, 12:38 Post: 54277
Peters

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 Cutter noise (JD 616)

Being contrary I might check the bearings, but my guess is that the slip clutch is slipping. There are bolts to tighten the friction. My guess is that the jar allowed it to slip and now it is slipping at times. Sort of like a loose fan belt.






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 05-04-2003, 13:19 Post: 54279
marklugo



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 Cutter noise (JD 616)

Slipping PTO clutches produces considerable smell and smoke when slipping for more than a second or two. Billy said he thought they were fine. It is important to double check the clutches for lining residue though just in case.

To perform an elementary test on the bearings is difficult. The only sure way is to dissassemble the box and visually inspect the bearings. Possible you might find some metal frags in the the gear box oil though.

Just thinking further could some fence wire or other material worked its way up between the stump jumper and mower deck? This could eat out the seals and bearings. Oil leakeage might not occur because usually there is two bearings in the bottom and sometimes they use sealed bearings in newer gearboxes.






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 05-04-2003, 13:20 Post: 54280
Billy

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 Cutter noise (JD 616)

After some further investigation, I found a loose washer on the shaft. It's between the blade holder and the gear box. I figure this washer, at times, spins and causes the squealing noise? I'm not sure what this washer is for or if it's a spacer?

Billy






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 05-04-2003, 13:24 Post: 54281
marklugo



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 Cutter noise (JD 616)

Billy,
Is this a possible seal instead of a washer?






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 05-04-2003, 13:35 Post: 54282
Billy

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 Cutter noise (JD 616)

Mark, I don't think it's a seal or part of one. I can't see it but by feeling, it feels like it's maybe 1/16" thick and concaved (like a spring lock washer). According to the OM it doesn't show this washer but you know how JD manauls are.

After sittin and thinkin, this does sound just like a washer spinning on a shaft. Like in between a squeal and a rattle. It's hard to explain.

Billy






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 05-04-2003, 13:40 Post: 54283
marklugo



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 Cutter noise (JD 616)

I have fixed many a gear box on these things, and just haven't seen a washer in this area of this description. Though I suppose it could be a shim though. The surest way to tell is to drop the jumper though.






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 05-04-2003, 14:14 Post: 54284
Billy

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 Cutter noise (JD 616)

It could be a shim or maybe some kind of dust cover type washer? I'll drop it and check it out later. I know it's gonna be a pain to get off though.

Thanks Mark
Billy






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Discussion Boards > Active Subjects > Messages as Posted > Tractor Implements Forum

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