Output shaft seal in Velvet Drive 5000

M

MichaelNJ

Active member
Joined
Aug 8, 2004
RO Number
14778
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Anyone ever change one? I know the flange has to come off but can the new seal be worked in from the outside or does the housing need to be opened and the seal pressed in from the inside?
 
just did one on a 72 we had to remove the prop shaft coupler and prop to slide it back far enough to work on it.
Made a tool to loosen the nut behind the flange,piece is 1/4 x 1 angle iron with 1 hole drilled to accept a coupler bolt
Didnt have the leverage to loosen the nut so we held the nut stationary and turned the flange with the angle iron

pried the seal out and drove the new one in

Bring along some heat to loosen the loc-tie on the nut
 
Thanks. So there is a nut behind the flange that holds the seal in, not talking about the nut that holds the flange on the spline/shaft?

My understanding is that the seal goes on the spline and you use silicone sealant to seal it to the spline. I guess that means the whole seal spins with the shaft as opposed to the shaft running through the seal?

When you say "drove" the seal in, what do you mean? I would be concerned about damaging it and having it leak if not handled carefully.

I was also told that these rarely leak unless you have an alignment issue. Alignment was checked last year and was fine. If there is an alignment issue, the back of the flange will be scored and need to be replaced.
 
With the new seal "tapped in" to hold it in place I used a 3 inch flat driver to install the seal hitting the steel to dive the seal flush
 
Thanks Alien. Did you inspect the back of the flange to make sure it wasn't scored where it mates with the seal? How did it look?
 
There was a rust spot and some corrosion (rust)where water splashed in most likely from the shaft log drip. polished it out
with some #4600 wet/dry sandpaper and WD 40 and re=installed the flange.
WE had a spare trans to experiment on for removing the flange and seeing what was involved.We didnt know if we needed a puller or not. Once the nut was removed the flange slid off the shaft.
 
Isn't the flange brass? Interesting that it came off so easily. Did you use any silicone sealant inside the seal? Did you replace the nut? I understand that it's a nylon lock nut. You said yours just had locktite.
 
I always pack the inside of a seal with grease, this prevents the spring from popping out as you drive the seal in.
 
quote:
Originally posted by Reel Antsy

I always pack the inside of a seal with grease, this prevents the spring from popping out as you drive the seal in.

Click to expand...


That's a great tip! Thank You!
 
the flange on the 72 C is steel and just slides onto the outputshaft, the nut has a nylon "collar" on the base of the nut for sealing .
A couple of drops of Blue Loc-Tite for insurance.
 
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