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Rear mower tension pulley
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- 5+ Years
- Posts: 37
- Joined: Fri Apr 03, 2015 9:54 am
- Zip Code: 16025
- Tractors Owned: Cub Lo Boy 154
Massey Ferguson 35
Rear mower tension pulley
My 154 has been running great this mowing season. Yesterday when mowing, I started to get a rapping noise that seemed like it was coming from the tunnel. I stopped and opened up the back of the tractor to check the PTO assembly. All looked fine and worked as it should. I checked the PTO adjustments, shaft, and set screws. I ran it without the mower belt connected and it seemed fine. Hooked everything back up and went back to mowing. Almost immediately it started the noise and there was a vibration, and this time it threw the mower belt off. Tore it back down and started checking the PTO again. PTO looked fine but what I didn't notice the first time was that the right rear mower tension pulley had failed. Would a bad pulley make a noise like that? New one on the way from Hamilton Bob.
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- 5+ Years
- Posts: 579
- Joined: Wed Apr 04, 2018 1:33 pm
- Zip Code: 22650
Re: Rear mower tension pulley
Belly deck, right. Both the right idler and spring tension one are cast iron pulleys with ball bearings. I'll admit mine are quite loose and I lube them frequently. When they lose a ball or more, they can make a racket and become unusable. They look to be open balls now, so I need to get on this too.
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- 10+ Years
- Posts: 7388
- Joined: Sat Jul 22, 2006 5:02 pm
- Zip Code: 00000
- Location: in northern usa
Re: Rear mower tension pulley
Luckily I have a few rear mule drives with good pullies and bearings I just keep on swapping out used parts while I order new ones. I’ve had the belt come apart and slap.
I'm technically misunderstood at times i guess its been this way my whole life so why should it change now.
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- 10+ Years
- Posts: 7388
- Joined: Sat Jul 22, 2006 5:02 pm
- Zip Code: 00000
- Location: in northern usa
Re: Rear mower tension pulley
I made my own belt spring tensioner from a spring using a snowplow spring tensioner stud and a piece of angle iron with a hole drilled in it for adjustment. Never broke again.
I'm technically misunderstood at times i guess its been this way my whole life so why should it change now.
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- 10+ Years
- Posts: 2791
- Joined: Tue Jul 22, 2008 12:44 pm
- Zip Code: 48370
- Tractors Owned: 184
- Location: Oxford, MI
Re: Rear mower tension pulley
Sure wish those mule drive pulleys had a lubrication point. I ended up replacing my cast iron one with a cheap stamped pulley with a sealed bearing. I don't really expect it to last long.
184 w/ Creeper & 3-Point
IH 3160a Mower
IH Model 15 Tiller
IH-54 Blade
IH 3160a Mower
IH Model 15 Tiller
IH-54 Blade
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- 5+ Years
- Posts: 37
- Joined: Fri Apr 03, 2015 9:54 am
- Zip Code: 16025
- Tractors Owned: Cub Lo Boy 154
Massey Ferguson 35
Re: Rear mower tension pulley
My replacement pulley from Hamilton Bob's was cast. Heavy and solid.
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