Stuck brake drum? 1994 Big Bear 350 - ATV Forum - All Terrain Vehicle discussion for Honda, Yamaha and more ATVs
 
LinkBack Thread Tools
post #1 of 9 (permalink) Old 07-07-2014, 05:18 PM Thread Starter
Junior Member
 
Join Date: Jul 2014
Posts: 5
 
Stuck brake drum? 1994 Big Bear 350

Name:  IMG_20140706_211016.jpg
Views: 3142
Size:  72.6 KB

Name:  IMG_20140706_211038.jpg
Views: 1502
Size:  78.3 KB

Name:  IMG_20140706_211053.jpg
Views: 1247
Size:  71.7 KB

Name:  Brake Assembly.jpg
Views: 1429
Size:  26.8 KB

How do you remove the brake drum off this thing? It looks like it just slides over the wheel axle and the four lug not bolts but I can't pull it off to save my life. I've tried PB Blaster, a crowbar and multiple hammers to no avail. What's it typically cost to have a dealer replace drum brake pads?

Last edited by ahardman; 07-07-2014 at 05:28 PM. Reason: Added Assembly picture
ahardman is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 07-08-2014, 08:01 AM
Can Am 1000
 
Join Date: Mar 2012
Location: CENTRAL nj
Posts: 259
 
been a while

but if i remeber correctly I beat the heck out of mine with a mini sledge hammer
slayer1962 is offline  
post #3 of 9 (permalink) Old 07-08-2014, 08:36 PM
Member
 
Join Date: Jun 2014
Posts: 70
 
Make sure your parking brake is not on.

Remove the brake cable from the hub.


Put a board over the end of the shaft and smack it with a large hammer. Only do it a couple of times. Then use the board to try and catch an edge and hammer on it. Rotate the hub every smack. If you can't rotate it, your brake is locked up.

Be careful when using pry bars, as there is a seal there that you don't want to damage.


If the brake is locked up, what I would do is make a mess. Plug the drain hole and fill the chamber with oil (cheap stuff will work fine). Put the wheel back on for leverage and turn it. Once you got it loosened up, take the wheel off and see if the drum will come off then.

If you use oil, you'll need to clean all the oil out of the entire chamber, use brake clean and soak the pads for a minute or two.


I should mention that I also used a rubber mallet. Specially formed, put an angle on the head so it would have more surface area for the angled strike.
TheBearAK is offline  
 
post #4 of 9 (permalink) Old 07-09-2014, 02:38 PM Thread Starter
Junior Member
 
Join Date: Jul 2014
Posts: 5
 
I should clarify. These are the front hydraulic brakes, which disengage just fine (I just tried them).

Would you still recommend filling the drums with oil?

My next idea is to find a 3 jaw puller that's big enough to go around the drum, though I was trying to avoid buying more tools. PB Blaster and brute force hammering method has been unsuccessful after two attempts.
ahardman is offline  
post #5 of 9 (permalink) Old 07-09-2014, 05:23 PM
Member
 
Join Date: Jun 2014
Posts: 70
 
filling with oil is only if the pads are stuck. If you can turn the wheel by hand freely, then that is not the issue.

brute force is going to be the answer. Can you pull that plug out and look inside?
TheBearAK is offline  
post #6 of 9 (permalink) Old 07-09-2014, 06:15 PM Thread Starter
Junior Member
 
Join Date: Jul 2014
Posts: 5
 
The plug comes off easy but I don't know how to read the wear indicator to tell if the pads need replacing.
ahardman is offline  
post #7 of 9 (permalink) Old 07-10-2014, 01:24 PM Thread Starter
Junior Member
 
Join Date: Jul 2014
Posts: 5
 
Success!

I got it off with a 6" three jaw puller. Had to grind away portions of the dust cover to fit the jaws on the brake drum lip.

Surprising part is that the lug bolts are attached to the drum, and not the axle like is shown on my service manual.

All of the resistance seems to be coming from the super sticky rubber boot seal, so I'm going to clean that up and add some new rubber grease to see if that makes it easier. Axle spline could use some new grease too.

Name:  1994 Big Bear - Brake Drum 1.jpg
Views: 1379
Size:  81.0 KB

Name:  1994 Big Bear - Brake Drum 2.jpg
Views: 1336
Size:  84.6 KB

Name:  1994 Big Bear - Brake Drum 3.jpg
Views: 1550
Size:  71.7 KB

Name:  1994 Big Bear - Brake Drum 4.jpg
Views: 1607
Size:  60.3 KB
ahardman is offline  
post #8 of 9 (permalink) Old 07-10-2014, 04:47 PM
Member
 
Join Date: Jun 2014
Posts: 70
 
Well, that hub does not match the drawing you posted at all.

That is not just the drum, like on all of the ATVs I've worked on, but rather the drum and hub together.

Makes sense that it was difficult to pull off as you had to unseat it from the shaft.

Interesting. Not sure if that is a good thing or a bad thing. Bad that it doesn't match the drawing.

From the pictures, the pads don't look that bad to me.
TheBearAK is offline  
post #9 of 9 (permalink) Old 07-10-2014, 04:57 PM Thread Starter
Junior Member
 
Join Date: Jul 2014
Posts: 5
 
Ya, I've looked through two different service manuals for this model and there's only one other version left to confirm against. The first two show the same incorrect sketch. Hoping the book supplier will get back to me today.

The right wheel pads are virtually brand new. Hope the left side looks the same.
ahardman is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the ATV Forum - All Terrain Vehicle discussion for Honda, Yamaha and more ATVs 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









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




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



Posting Rules  
You may post new threads
You may 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