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Bombi BR100 - zerk grease fitting

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HartsHaven

New member
I am about to start some work on a Bombi BR100 that I recently purchased. I don't have much info about her but I think she's a late 70s, early 80s model BR100. So here is my dilemma: someone previously removed the zerk fittings, and I obviously need them to add grease to tension the tracks. I haven't had any luck finding the correct zerk size fitting. The manual that I've found just mentions "zerk fitting" but not a size. Would any of you be able to tell me some information, where I could find info as to the size for those fittings? Thank you...in advance...for your time.
 
MNoutdoors RIP

MNoutdoors RIP

Gone But Not Forgotten
GOLD Site Supporter
HartsHaven said:
I am about to start some work on a Bombi BR100 that I recently purchased. I don't have much info about her but I think she's a late 70s, early 80s model BR100. So here is my dilemma: someone previously removed the zerk fittings, and I obviously need them to add grease to tension the tracks. I haven't had any luck finding the correct zerk size fitting. The manual that I've found just mentions "zerk fitting" but not a size. Would any of you be able to tell me some information, where I could find info as to the size for those fittings? Thank you...in advance...for your time.
Click to expand...

Should be 1/8" pipe thread get good ones so they don't leak back under high pressure

What we usually do is use a deep socket 7/16 and shove some paper towels in the socket so the zerk can't go inside and the threads are sticking out start by hand so not to cross thread
 
Alaska Snow Cat

Alaska Snow Cat

Member
It may be possible your were broken off too and you are seeing the grease hole but there is still part of the old fitting in the housing.
 
H

HartsHaven

New member
Tried the 1/8" and 1/4", neither are big enough...3/8" is too big...having a hard time finding anything in between!!
 
MNoutdoors RIP

MNoutdoors RIP

Gone But Not Forgotten
GOLD Site Supporter
HartsHaven said:
Tried the 1/8" and 1/4", neither are big enough...3/8" is too big...having a hard time finding anything in between!!
Click to expand...

I think your missing a piece. On some of the newer ones there is a large threaded piece that goes into the body of the adjuster and the zerk screws I to it.
It's made to release the grease pressure without having to take the zerk out
 
H

HartsHaven

New member
MNoutdoors said:
I think your missing a piece. On some of the newer ones there is a large threaded piece that goes into the body of the adjuster and the zerk screws I to it.
It's made to release the grease pressure without having to take the zerk out
Click to expand...
Thank you. I was afraid that I might be missing something. I have a parts manual that just shows just the zerk fitting; however I don't know the year of the Bombi and certainly the parts manual may not match the year. I just purchased the Bombi and it came with the manual. Is there a way to determine the year? Once I do know the year, is there any chance I will find these parts or am I going to have to come up with another approach? One thought was to remove the adjuster and drill and thread for a 3/8" zerk.
 
H

HartsHaven

New member
Welding a nut on to it sounds like a good idea. I see a nut at the front of the adjuster that holds it on, but I am not sure what holds the back end on. Does anyone know what it takes to remove the adjuster? Are there any gotchas that I should look out for? Thank you!
 
Snowtrac Nome

Snowtrac Nome

member formerly known as dds
GOLD Site Supporter
they are pretty simple I have rebuilt them in the past just have to pull a couple of pins Boggie has the kits with new o rings and cup. pretty easy fix I would spend the small amount of money to do it now rather than after years of grease have oozed out covering every thing up.
 
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