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Bravo upper gear set
4 Attachment(s)
Dissasembled the upper drive because of a lazy forward shifting. Upper clutch was glazed. Will work some valve coumpound on it and flip it upside down for a second life. And then... There is this:
[ATTACH=CONFIG]560219[/ATTACH] [ATTACH=CONFIG]560221[/ATTACH] Small chiped spot on one of the lower gear's teeth And [ATTACH=CONFIG]560220[/ATTACH] [ATTACH=CONFIG]560222[/ATTACH] Another light chiped spot on ujoint shaft gear Manual says as soon as anything is spotted, replace... I wonder, overall condition of the gear set seems good with no missing or broken teeth, Do you guys replace as soon as any little wear shows up? Do I need a new gear set now? It may have been like that for a While |
Once the gears start pitting, they are done.
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Those gears are trashed, wouldnt dream of reusing them, even flipped over, fwiw , Smitty
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what do you mean flipped over
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Originally Posted by GrannySShifting
(Post 4493316)
what do you mean flipped over
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Originally Posted by Clustergear
(Post 4493352)
Swapping top and bottom gear. Like swapping port and starboard drive so other side of gears get used (good side)
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Originally Posted by GrannySShifting
(Post 4493358)
If you flip them, you have to swap the sides the drives are on right
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and the pinion is always running on the same surface. you could build a reverse rotation engine to get some life out of the other side though
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Originally Posted by Griff
(Post 4489719)
Once the gears start pitting, they are done.
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Arcticfriends you get my PM?
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Grannysshifting, your pm box is full.
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Originally Posted by Mr Gadgets
(Post 4498243)
Grannysshifting, your pm box is full.
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Thanks to all for the inputs... Looks like I'l have to rebuild my upper.
Questions for a Bravo X 2006: Should I change all the bearings, shims, races that I found in there? I would have the pinion gear pre loaded to the specs but If I replace with exact same original parts to rebuild the unit, will I have to re-shim and do other adjustments before torquing with the spanner wrench to get the pinion gear back in? It's really confusing in the manual... |
The cone clutch is just a few hundred dollars. If you are in the drive, go ahead and replace it too.
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Planing on it... It was actually the reason i opened the upper for. Then I had the surprise with the gears. I wonder if with the exception of the pinion gear that has to be preloaded if there is any other special adjustments involved when replacing all the other parts in the upper? In the manual, when they put the pinion shaft back in before torquing with the spanner wrench, they seem to f@! around with shimming and adjustements in order the get the pinion gear at the right place.
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Anytime you replace upper gear set, it should be shimmed to specs to get the proper gear lash. Not all gears sets are identical to each other, hence the setup needs to be checked. If the thrust bearings and inner bearings have no damage they can be reused. Look at them with a strong magnifying glass to check the needles. If any metal particles come out of them, then replace them. If the inner ones have metal in them or don't roll smoothly then replace them. Shims are subject to damage also. Check them, flip them over, but a lot times they need to be replaced to get the gear lash to come in.
Hope that helps. Dick |
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