Inserting MABs???

[redman76]

I bought the press in type MABs to change mine from the larger size to smaller.  It looks like you just drive them into the large MAB opening. Is this correct and do you use Loctite red on them?  Do they go in from top or bottom of air horn?  It looks easier from the bottom, but not as sturdy looking for driving in.  From the top, more sturdy surface, but harder to access.  Just curious how to do . . .

[Cliff Ruggles]

They are press fit, no loctite needed, but it wouldn't hurt if you used a small amount.  They go in from the top, and have a chamfered edge that goes in first.

Use a small punch with a tiny amount of grease on it to pick them up and hold them on the punch till driven in place....Cliff

[redman76]

Thanks Cliff, that's what I needed to know.

[redman76]

I got them installed with no problems.  I was shipped 4 of the smaller MABs.  I only need to install 2 of them, is this correct?  The other two are spares?

[Cliff Ruggles]

Two in the airhorn, and two in the main casting....Cliff

[redman76]

Okay, I think I've figured it out.  I found your pic and description on p. 32.  Just to confirm, the other two go here?

[Cliff Ruggles]

Yes, those are the MAB's in the main casting....Cliff

[Shark Racer]

I know this is an old topic - but it'd be nice to have this info in one spot.

What kind of clearance is needed before pressing the bushings?

Thanks!

[Cliff Ruggles]

The holes are already the correct size, and the airbleeds will have a very slight interference fit.....Cliff

[Shark Racer]

Thanks very much!