Gimble Bearing

[f16dcc431]

How do i tell if my gimble bearing is going bad when im WOT and start to trim up while triming i get to a certin point were i get a wierd rattiling noise i also hear the same sound if im trimed all the way down and wot and i wandering if there is a way to tell if it is the gimble bearing before tearing off the out drive or what else could cause the rattiling

 

[wncrjb]

Re: Gimble Bearing

If you have to pull the drive to check the gimble bearing, sounds like you need to check your u-joints also.

wncrjb

 

[achris]

Re: Gimble Bearing

Removing the leg is no big deal, it's a 6 minute job. It also gives you the opportunity to check all sorts of things. The gimbal bearing, the uni-joints, the engine alignment, the preload on the drive gear bearings in the top of the leg. Any of which could be causing your noise.

To remove the leg:

1. Shift to forward gear... Most important
2. Remove aft anchor points on trim rams. You haven't given us a serial number so we don't know which particular model you have.
3. Remove 6 of nuts holding the leg to the bellhousing.
4. Support leg and pull straight back.
5. Pick up leg off the ground. Sorry, forgot to tell you it was heavy.

Once you've done all that get back here and we can tell you how to check all the different things. And how to avoid the traps about putting the leg back on.

Chris...........

 

[f16dcc431]

Re: Gimble Bearing

so i got the stearndrive removed now how can i tell what is wrong the uni joint is not loose it looks ok what should i check next

 

[Don S]

Re: Gimble Bearing

Reach in and turn the inner part of the gimbal bearing. If you feel any rough spots at all, it will make noise.
Was there any water in the bellows when you pulled the drive off? How about gear lube?

 

[Bondo]

Re: Gimble Bearing

when im WOT and start to trim up while triming i get to a certin point were i get a wierd rattiling noise i also hear the same sound if im trimed all the way down and wot

Hmmmmmmm,..........

Any Chance you're hearing Detonation,..??..??........

Has the ole girl had a Tune-Up lately,..??......

 

[f16dcc431]

Re: Gimble Bearing

the bearing turns but it does have a rough spot in it where there is some friction and yes there was water in the bellow alot of water but thank goodness for all the grease how could the water have gotten in there the whole bellow was covered in grease so it looks like the gimble bearing is going to get changed what else should i change and how hard is it to change that bearing i appericate all the help from this forum uyall are great im a aircraft mechanic and this is my fist boat and you guys have made it easier

 

[Don S]

Re: Gimble Bearing

Replace the bellows, the ujoints, the gimbal bearing. Check the drive for water in the gear lube since the seal only keeps gear lube in and not water out cause water shouldn't be there.
Make sure the input shaft yoke on the drive isn't rusty and replace the seal.
Put it all back together using new gaskets and seals. Never reuse them.

 

[ziggy]

Re: Gimble Bearing

guess we assume its a mercruiser?

ya can go here...."http://www.mercstuff.com/howdoi.htm" ya can find out basicly what yer gettin ready to get into.... i almost done doing what dons said for the same reason you got. but i had 0 water, only the indication that water had been there via rusty ujoints..... if ya aint got a service manual for whatever ya got. ya need one of them too. preferably oem.....

 

[Don S]

Re: Gimble Bearing

Doesn't matter if he has a Mercruiser, OMC Cobra, or the Volvo SX/DPS, it's the same thing. Bellows, Gimbal bearing, Ujoints, Yoke, Gear lube and seals.