Would a bad coupler make a noise like this?

[2550SX]

Hello all,

I noticed this noise the other day coming from the coupler / gimbal bearing area of my boat.

I hear the flappers ticking but there seems to be sort of a faint knocking also.

The boat is a 1992 with 1400 hours on the original 7.4 / Bravo1

I see zerks on the coupler and I did give them a couple pumps last year, I am considering giving them a few more pumps and seeing if that would have any effect on the knocking

Thanks

 

[alldodge]

Don't see it being the coupler, but might be gimbal or drive

I see zerks on the coupler and I did give them a couple pumps last year,

Does this mean the drive has not been off in a while?Hope not, it needs to be pulled every year or max every 3 and everything checked out, gear lube changed

 

[2550SX]

I bought it in the spring of 2021 and paid a marina to replace the bellows that same spring. While they were in there I asked them to check the allignment, U-joints and gimbal bearing. Grease as necessary and change the oil in the drive. They gave it a clean bill of health. I have only put 35 hours on it over the last four years. The boat resides on the trailer and not a slip. It has never seen salt water since I have owned it. I should probably pull the drive and check everything out.

I am hoping U joints.

Thanks

 

[Bondo]

Hello all,

I noticed this noise the other day coming from the coupler / gimbal bearing area of my boat.

I hear the flappers ticking but there seems to be sort of a faint knocking also.

The boat is a 1992 with 1400 hours on the original 7.4 / Bravo1

I see zerks on the coupler and I did give them a couple pumps last year, I am considering giving them a few more pumps and seeing if that would have any effect on the knocking

Thanks

Ayuh,...... 1992, is that a block mounted furl pump,..??

 

[Scott06]

could be a few things gimbal, ujoints, flywheel cover loose, fuel pump previously mentioned.

I had Ujoints on my alpha gen 2 that felt smooth, replaced them as I was into the drive for a bearing and decided to do all the seals... two crosses on each ujoint had ripples worn in to them yet were smooth ...

 

[2550SX]

Ayuh,...... 1992, is that a block mounted furl pump,..??

It sure is, i had to replace that $800 wonderful piece of engineering last year. I change the oil in it annually

 

[2550SX]

could be a few things gimbal, ujoints, flywheel cover loose, fuel pump previously mentioned.

I had Ujoints on my alpha gen 2 that felt smooth, replaced them as I was into the drive for a bearing and decided to do all the seals... two crosses on each ujoint had ripples worn in to them yet were smooth ...

Thanks. I am ashamed to say i havent pulled the drive yet. I keep it on a trailer at the marina an hour from my home and i signed a waiver that i am not supposed to wrench on it at the marina even though we all do small stuff. Pulling a drive may raise some eyebrows. Ill probably bring it home to winterize and pull it. Ive pulled the alpha off my old boat many times but never a bravo. I heard i have to make sure to release the shift cable? Does that sound right? Im sure there is a youtube or two about it.

It was a youtube that i watched where a guy had the coupler nuts come loose and that scared me because i dont have means to pull the motor. So i have my fingers crossed its a ujoint or gimbal bearing.

Thanks