broken gears in bravo 1 drive
 

I pulled my drive today, and there came oil from the u joint.
I pulled the upper cap and I saw metal and broken gears.
We separated the upper and lower unit.
I dont know how I can pull the gears out from the unit?
who has a link to some manual?

Takes a couple specialty tools to get into them...the upper isn't that bad, but the lower takes a bunch. If you find the manual, it will tell you all the tool part numbers you need....be prepared to spend a $1,000 or so on a complete tool set.

It sounds like you have destroied the housing as well as the gears. If that is the case you dont need a manual, just buy another upper. Not sure if you have a single or twin app but you may want to upgrade at least to an XR or some other aftermarket drive.
Unfortunatly I have broken a few and have never been able to re-use a housing.

You know....you are probably correct. If fluid is coming out of the front, it's probably a pile of scrap metal now.

Your right

i have 2 bravo1 drives both rebuilt, 1 with 10 hours the other with 50 hours ready to go pm me for price.

putting copy write materal on the web:( not good

your right, And not fair to the dealers trying to make it in this economy.:party-smiley-004:

broken bravo drive
 

thanks for the info, I bring the drive next week to germany for repair to an official mercruiser dealer,the problem is we don"t have that many bravo parts in the netherlands.

I bet shipping to Germany is tuff:eek:

The spinner nut by the ujoint,hammer and punch,unscrew,take out shift fork asmy,press gear down pull c/keeper out?
Same on foot,spin nut off, then unscrwew the nut on the vert shaft.

broken bravo drive
 

thanks strip poker , thats the info I looking for.
now i can pull the gears and look wat is dismanteld so the dealer can order the parts first.

What led you to believe the cases were not re-usable? Was it impossible to get the right rolling resistance, oil leaks, parts not fitting back in? I'm just curious as I have heard this before but wonder how one determines this.

BT

don't know about his, but when my upper failed and we tore it down, the case was split at the input shaft......there's no fixing that!!! Often the top cap will pop which might save the case, or the floor that holds the gears will break and drop slightly...then the case is garbage.

Thats exactly what happened to my Bravo 1 drive--broke the case in the upper. Ended up replacing the entire drive.

http://i294.photobucket.com/albums/m...930t/005-2.jpg

Wow, I'd say that case is junk. Thanks for the info. I guess the 2 I did this yr I was luck because they went back together fine. One just needed a little dressup of where gear parts dug into the side of the case. The rest all check out fine and I am comfortable that they will run.

A buddy takes cases that have had the towers busted completely as in the picture and installed a steel tower. Just have to make sure the case isn't split out further and that the bore is good in order to tap threads into it for the tower insert. He later went to a press fit tower.

keep up with the shims!!! most of the time they go back with the same shims,but being stretched it might be out.

Bearing tq is differant on use dna dne,that on the upper input bearing set sane as the lower,cking roling tq on vert shaft,Put red loctet on the bert shaft nut,I had one back off, fubared

Rob

broken bravo drive
 

Thanks for al the info,it seems that the housing looks ok,only destroit som gears and bearings , next week i drive to the dealer for repair.

Blue Thunder,
When a gear set is destroyed it can do fun things to the case. The towers will warp, the floor will move around and the tower alignment can be out of wack. The input snout can be streched, etc. If the gears don't line up properly.. they live a short life.
I found where on person welded some gouges in the upper case and warped the floor by .007".. The new XR gear set lasted about 5hrs.
I had the floor recut and check tower alignment and put a new set of gears in it.. I believe that drive is still in use.
So yes they can be repaired if the damage is not too severe. I have also installed towers in cases like the one above, but I discourage it.. Although the gent talked me into it and I believe the drive is still in use.
I like to put the tower in Before the damage occurs... Part of the B1 upgrade along with the XR ribbed top cap and studs and upgrade gear kit, that I do.

Dick