Brush hog blade removal - MyTractorForum.com - The Friendliest Tractor Forum and Best Place for Tractor Information
 
LinkBack Thread Tools Display Modes
post #1 of 7 Old 07-15-2018, 09:21 AM Thread Starter
Senior MTF Member
 
Join Date: Aug 2010
Location: connecticut
Posts: 574
Brush hog blade removal

I just got under my brush hog and I see that my blades need some attention. They are mounted with a single bolt and I can access the 1˝” nut through a hole in the deck. When I tried to loosen the nut I found that the bolt just spins and that I need to hold it in place. The head of the bolt is round, not hexagonal and without any obvious way to hold it except maybe 1. A pipe wrench 2. Tack weld it to the blade temporarily? What do you do? Why are the heads round? Some I saw at Tractor Supply are like that too. Seems nuts. Another issue is I believe the bolts may be worn so that the blade or blades are moving up and down striking the underside of the mower deck and making an awful racket. Does that sound feasible? They don’t always bang but they bang enough to be concerning.

Last edited by hairyapple; 07-15-2018 at 09:27 AM.
hairyapple is offline  
Sponsored Links
Advertisement
 
post #2 of 7 Old 07-15-2018, 03:19 PM
2000 Posts and climbing!!!
 
Join Date: Apr 2016
Location: Alberta
Posts: 2,353
Barn
Re: Brush hog blade removal

visegrips™?
dave_r is online now  
post #3 of 7 Old 07-29-2018, 12:54 AM
MTF Junior Poster
 
keljan11's Avatar
 
Join Date: Jun 2018
Location: British Columbia, Canada
Posts: 14
Re: Brush hog blade removal

Quote:
Originally Posted by hairyapple View Post
I just got under my brush hog and I see that my blades need some attention. They are mounted with a single bolt and I can access the 1˝” nut through a hole in the deck. When I tried to loosen the nut I found that the bolt just spins and that I need to hold it in place. The head of the bolt is round, not hexagonal and without any obvious way to hold it except maybe 1. A pipe wrench 2. Tack weld it to the blade temporarily? What do you do? Why are the heads round? Some I saw at Tractor Supply are like that too. Seems nuts. Another issue is I believe the bolts may be worn so that the blade or blades are moving up and down striking the underside of the mower deck and making an awful racket. Does that sound feasible? They don’t always bang but they bang enough to be concerning.
What I've seen on YouTube is guys blocking the blade with a piece of 2X4 against the edge of the deck (underneath), and a little heat on the nut might help loosen it as well. I've never removed the blades, but have an old MF bush hog that needs an almost complete rebuild in the near future.
Think vice grips are way too small (I've bent a few pairs in the past. Had to beat them until they sprung loose)
keljan11 is offline  
Sponsored Links
Advertisement
 
post #4 of 7 Old 11-04-2018, 01:43 PM
Senior MTF Member
 
Join Date: Sep 2016
Location: Missouri
Posts: 105
I dont know if youve fixed this yet or not but on the Brown Tree Cutter hog I used on right of way maintnance we had a special long socket (1 3/4"-2") we used for the nuts through a hole in the deck and a 36" pipe wrench for the bolt heads. We would place a large wood block under the edge of the deck to hold it up, get a bite with the pipe wrench and let it spin until it hit the block then spin the nut off. Some of the bolt heads were worn over half way down and took a few tries to get a good bite.

Some were hex, half round and two flat sides, some fully round. The shop sent out a few they hard faced back up but we never trusted those because of how cheap the office workers were.

Same company that made people buy their chain saws from the company and would only pay for 87oct known to have ethonal in it.
NicoR is offline  
post #5 of 7 Old 06-09-2019, 10:29 AM
MTF Junior Poster
 
Join Date: Jun 2019
Posts: 13
The bolts have a collar that the blade is free to rotate on, above the collar are two cogs that fit into slots in the round “pan” that the blades attach to.
Set the blade down on a 4x4 lightly and turn the nut until the cogs slip into the slots, then set it down all the way to hold them there.
Good nuts will take a 1 5/8 socket , rusty ones will take a 1 11/16. You can get them at tractor supply for a couple bucks. They are the newer style that grip on the flats of the nut and not the points and will work on nuts with rounded corners. Just did mine last week, breaking bar and a four ft piece of pipe and they came off. Cleaned all the threads and applied a little never seize to make the process a little easier next time. Also clean the slots out, rust collects in the and the cogs will not engage all the way
icecream is offline  
post #6 of 7 Old 07-02-2019, 08:16 PM
MTF Junior Poster
 
BJBVC's Avatar
 
Join Date: May 2016
Location: British Columbia
Posts: 3
Hi, I have a Ford 951b bush hog got it with property. I took old blades off put on spare sharper old blades. Went to put back together in order bolt blade though square hole then put on washer and nut. Tightened up with air gun only 90lbs pressure. One blade locked stiff couldn’t spin by hand one blade sloppy seems bolt needs tightening more. To me a newbie it seems both are wrong. One too tight, one not enough. Is the washer in the right place and what am I getting wrong. Thx.
BJBVC is offline  
post #7 of 7 Old 07-02-2019, 08:34 PM
Senior MTF Member
 
dave2280's Avatar
 
Join Date: May 2013
Location: md
Posts: 215
Re: Brush hog blade removal

We burn them off and replace them. All the retainers are proprietary to the manufacturer. I have picked the mower up to a vertical position with a loader and used and impact depending on the retainers condition We also hard surface the cutting edge.
The threads on the end of the retainer are generally so bunged up there no way to get them off
Very important to use a spec retainer. It's not worth the drama from a retainer failure and a launched blade that will wreak havoc with all in it's path

"We all know that light travels faster than sound. That's why certain people appear bright until you hear them speak."

Last edited by dave2280; 07-02-2019 at 08:46 PM.
dave2280 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the MyTractorForum.com - The Friendliest Tractor Forum and Best Place for Tractor Information forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome