Barbed wire vs Flail

   / Barbed wire vs Flail #1  

Torvy

Super Member
Joined
Jul 21, 2021
Messages
5,544
Location
North East Texas
Tractor
TYM T574H
I did another dumb thing...

Dropped my flail into a corner just to knock down some tall grass. Not even part of the chores I was doing. Of course, there was a bit of old wire laying in wait.

Wrapped it tight on the rotor and wedged between it and the frame. I cut away what I could, but there's 2 or 3 loops in tight.

Put the flail up on blocks and removed the housing. Took the screws out of the gear/pulley so I can pull the rotor and remove the wire.

The bolts holding the rotor are behind the gear. I'm not able to remove the gear.

Anyone have any experience with this?

It's a NOVA BCRM 175. I can post photos if that will help. Thanks.
 
   / Barbed wire vs Flail #2  
By gear, you mean pulley? Usually those are locked to the rotor shaft using a taper lock system. Essentially, there is a taper between the locking hub and the pulley that as it gets tighten, the hub will compress and lock to the shaft.

To remove these, you pull all the set screws out and put one on the hole that is meant to pull the hub out. Which will be the hole that has threads on the hub instead of the pulley like the other holes have.

This may or may not be the case in your flail though.

1746298342792.jpeg
 
   / Barbed wire vs Flail #3  
Well, disregard the previous post. From the exploded view, looks like it's just a big ol'nut (#39) on the shaft. I imagine there is a key so the pulley can drive the roter and you may need a puller to pull the pulley out.

1746298477307.png
 
   / Barbed wire vs Flail
  • Thread Starter
#4  
Yea, pulley. Mine has a bunch of small bolts similar to your photo with a very small one in the center.
 
   / Barbed wire vs Flail
  • Thread Starter
#6  
How do I pull it out without damaging something?
 
   / Barbed wire vs Flail #7  
Ah nice. Picture really helps. It's a taper lock system but the parts diagram shows something completely different.

Thread 4 bolts on those threaded holes I marked and tighten equally. Eventually, it will pop the pulley out or in, depending on how you look at it.

20250503_143410.jpg
 
   / Barbed wire vs Flail #10  
Don't know how to take that apart, but I do know it's much harder if I try to repair something when I'm tired and frustrated.

Do those parts need some penetrating fluid to soak before you try disassemble?
Good shot of PB Blaster never hurt...
 
 

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