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Bevel gear box rebuild help


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#1 Dayton_King OFFLINE  

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Posted August 01, 2015 - 06:07 PM

I have this bvg on a B10 Frame that is destined for the junk pile. I have never rebuilt a bvg. The one on my junker b10 started making noise and i checked and I have a lot of play.
So this bvg is nice and tight but has some play not bad but if I am going to replace it might as well make it right. My 2 problems at the moment are, set screw is siezed still after 3 days of pb blaster and acetone/atf. My second problem is what size nut on transmission side? I don't have my tools at home. I want to make it right.

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Edited by Dayton_King, August 01, 2015 - 06:08 PM.


#2 Marty'70 ONLINE  

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Posted August 01, 2015 - 07:03 PM

If its not too close to the seal, I would try some heat on the set screw.

#3 MH81 ONLINE  

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Posted August 01, 2015 - 07:15 PM

I agree, make a tin shield and protect it s much as you can, then heat
If you turn that side up, is there a place you could pour in water as a protector for the seal, etc? You're just trying to heat the metal around the setscrew, not the shaft or the screw, so water might help

#4 Dayton_King OFFLINE  

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Posted August 01, 2015 - 07:24 PM

I am planning on seals, I will try heat tomorrow. My little propane torch did not want to corporate tonight so I will go buy a new one.

#5 classic ONLINE  

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Posted August 01, 2015 - 09:32 PM

Get yourself a good punch that will bottom out in the set screw. Give it a few shots with a hammer and it will help loosen it up. I was able to remove many this way. This also works well on oil drain plugs.

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#6 MH81 ONLINE  

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Posted August 02, 2015 - 06:41 AM

Propane torch may not get it. The heat is lower and slower.
Do you have a neighbor with oxy-acet torches?

#7 Dayton_King OFFLINE  

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Posted August 09, 2015 - 12:22 PM

Still no luck, if I can't get it out by tomorrow night I will drill it ouy

#8 Dayton_King OFFLINE  

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Posted August 09, 2015 - 04:26 PM

Partial victory. Got the drive shaft coupler off. Now the question is how do I get the nut off. Is it reverse thread?

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#9 KennyP OFFLINE  

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Posted August 09, 2015 - 04:41 PM

I just went out and looked at the 716 BGB and it is RH thread. Not sure if it's the same as yours!



#10 Dayton_King OFFLINE  

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Posted August 09, 2015 - 04:52 PM

I must be weak. I will get a socket from work, none that I have will fit it.

#11 Dayton_King OFFLINE  

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Posted August 09, 2015 - 06:21 PM

I pulled the cover off, and cleaned it up. The teeth in all the gears are nice. In the video you can see the play in the input shaft. Can I just tighten that bolt to take the play out?

http://m.youtube.com...h?v=vdLe3X_WoHM

#12 massey driver OFFLINE  

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Posted August 09, 2015 - 07:01 PM

sorry I can't watch videos . removing that nut with the proper socket and a impact wrench shouldn't be a problem. as for the input shaft [remeber I can't watch videos] being loose and wobbling if thats what its doing there is a needle brg right at the front of the gear box and a common brg a little further inside.so if either brg is worn or the shaft is worn its going to cause the shaft to be loose.



#13 New.Canadian.DB.Owner OFFLINE  

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Posted August 09, 2015 - 07:14 PM

I looked at the video and then had a look at some of the photos I took when I was inside my BGB.  I think the threads look like they are normal threads.  As for the play issue, it looks like your woodruff key (26), or the associate key-way, is worn.

 

DSCN2518.JPG Better BGB part diagram.jpg



#14 Dayton_King OFFLINE  

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Posted August 09, 2015 - 07:15 PM

There is no play in the input shaft. I can rotate the input shaft and the bevel gear will start turning an 1/8 of an inch later

#15 Dayton_King OFFLINE  

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Posted August 09, 2015 - 07:18 PM

Well looks like I run it as is or fix the problem. I will go with fix the problem. Does any body rebuild the bvg I don't have a shop press. Or do you think I can make due and do it?




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