Alpha 1 Ujoints

[bboldt]

I removed my outdrive today and I have ujoints with inside keepers. According to the manual the retainer nut needs to come off in order to remove the shaft to press out the old ujoints. I bought the special too to remove the retainer nut. Any advice on what to do after I remove the retainer nut, looks like several spacers and gears will come with the shaft. Will they install in the same manner they came out no special alignment.

 

[achris]

Re: Alpha 1 Ujoints

If you are just replacing uni joints DO NOT remove the retainer. Put all that lot back in the housing and tighten the retainer back up to 200lbft. As long as you haven't lost any of the shims, it should all go back the way it came out...

To remove the unis just flick the keepers out and drive the bearing caps through... Fitting the new ones it the reverse of removing the old ones....

 

[Don S]

Re: Alpha 1 Ujoints

If you took the yoke out of the double bearings, you will have to reset the rolling torque on reassembly, and I would strongly suggest you get a new front seal and the oring that seals the assembly in the housing.
Do you have a drive serial number? There are different specs and people use "Alpha I" as a generic term sometimes when it's not.

 

[ktbarrentine]

Re: Alpha 1 Ujoints

According to the manual....

Which Manual? There has been a rash of posts recently quoting what is bum dope from "bad" versions of the manuals. I only ask because I want to make sure I am getting good info from the posts.....

 

[achris]

Re: Alpha 1 Ujoints

Which Manual? There has been a rash of posts recently quoting what is bum dope from "bad" versions of the manuals. I only ask because I want to make sure I am getting good info from the posts.....

Here's how I rate the manuals...

Seloc: :facepalm:

Clymer: :facepalm: :facepalm:

Genuine Merc manuals:

Chris......

 

[bboldt]

Re: Alpha 1 Ujoints

If you took the yoke out of the double bearings, you will have to reset the rolling torque on reassembly, and I would strongly suggest you get a new front seal and the oring that seals the assembly in the housing.
Do you have a drive serial number? There are different specs and people use "Alpha I" as a generic term sometimes when it's not.

Alpha 1 gen 2 ol850536 I have not removed the retainer ring yet but it looks like someone has tried and messed up the ring. The slots are all buggered up even missing 2 notches. Looks like they tried to take it off without the wrench. Should I replace it or let it ride it looks tight and on oil is coming out from around the ring.

 

[Don S]

Re: Alpha 1 Ujoints

You need a new retainer nut. The portion of the retainer that is broken off also keeps the big gasket that seals the drive to the bellhousing in place. Without those teeth, the gasket will squeeze out of place and you WILL get water in the bellows.

Hiere's a link to the manual for your drive. http://www.4shared.com/office/2V0kM3lL/14__Alpha_I_Gen_II__Drives_91-.html?

 

[bboldt]

Re: Alpha 1 Ujoints

"If you took the yoke out of the double bearings, you will have to reset the rolling torque on reassembly, and I would strongly suggest you get a new front seal”
This makes me nervous. If I remove the ring and replace without taking the yoke out of the double bearings do I need to reset the rolling torque.

 

[Don S]

Re: Alpha 1 Ujoints

You have to take it apart, it's the only way to get the retainer off. If it makes you nervous, find a tech to do it for you.

 

[bboldt]

Re: Alpha 1 Ujoints

Thanks that manual helps a lot

 

[bboldt]

Re: Alpha 1 Ujoints

Thanks Don for the information you sent me, it?s great. I hate to ask but can you explain to me what preload is?.in reference to the bearing preload.

 

[achris]

Re: Alpha 1 Ujoints

Thanks Don for the information you sent me, it’s great. I hate to ask but can you explain to me what preload is….in reference to the bearing preload.

http://www.nmbtc.com/bearings/engineering/preload.html

 

[bboldt]

Re: Alpha 1 Ujoints

Thanks achris, that was great, very helpful.