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914World.com _ 914World Garage _ Speedometer Angle Drive Seal

Posted by: capitolatim Nov 14 2015, 07:09 PM

My speedometer angle drive is leaking badly on my newly acquired 1970.

I ordered these Pelican parts 999-701-084-50-m104 O ring and 999-113-036-50-m260 shaft seal.

I have no idea how to install that seal, anyone done it?

Cheers Attached Image

Posted by: ConeDodger Nov 15 2015, 12:09 AM

If McMark has time he may chime in. He has a modification he does that adds a second o-ring and pretty much knocks out the leaks. You might PM him if he doesn't.

Posted by: vintage914racer Nov 15 2015, 12:17 AM

QUOTE(ConeDodger @ Nov 14 2015, 10:09 PM)

If McMark has time he may chime in. He has a modification he does that adds a second o-ring and pretty much knocks out the leaks. You might PM him if he doesn't.

I had a bad leak and replaced with his double seal unit. Definitely the way to go.

Posted by: Jon B Nov 17 2015, 12:41 AM

QUOTE(capitolatim @ Nov 14 2015, 06:09 PM)

I have no idea how to install that seal, anyone done it?

There's a washer above the oil seal you need to remove first. The washer OD is a tight fit in the housing, and doesn't come out easily.
A hook-type seal remover works best to remove both the washer and seal.

Jon B.
Vista, CA

Posted by: Darren C Nov 17 2015, 04:59 AM

Hi,
You need a strong hook tool from a pick set to pull out the old seal without damaging the housing. They are stuck real well in there, don’t be tempted to drive anything down the side as it will damage the soft metal housing and trash it.
Remember to order a new O seal too. Make sure its all clean before re-assembly. I used a socket of the same outside diameter of the seal to drift it back in. Make sure you get it the right way up as to get it out again will damage the seal and you’ll need a new one.
With the right tools is a 2 minute job!

http://s265.photobucket.com/user/DarrenLCollins/media/914%20underside%20008_zpsxnzhabmq.jpg.html

Posted by: capitolatim Nov 17 2015, 11:21 AM

QUOTE(Jon B @ Nov 16 2015, 10:41 PM)

QUOTE(capitolatim @ Nov 14 2015, 06:09 PM)

I have no idea how to install that seal, anyone done it?

Jon, thanks, I'm giving it a go, that washer is well stuck.

Cheers
Tim

Posted by: Mikey914 Nov 17 2015, 05:41 PM

The main reason these leak is the lack of a secondary seal on the unit itself. McMark has these as well as I do. I suspect it will still drop even after the seal is installed
http://shop.914rubber.com/searchquick-submit.sc;jsessionid=508F2A2EF5046894E775989A99FB19A9.m1plqscsfapp02?keywords=drive

Posted by: capitolatim Nov 23 2015, 08:05 PM

http://forums.pelicanparts.com/porsche-914-914-6-technical-forum/891126-speedometer-drive-help.html#post8889305

Posted by: Mikey914 Nov 24 2015, 11:46 AM

Thanks for the props!