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> 911 dust cap, What's the trick?
Olympic 914
post Jan 25 2022, 11:48 AM
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Trying to pull my front hubs off and can't get the dust cap off.

Tried large channel locks and tapping with a hammer, but all I am doing is messing up the dust cap.

Must be an easy way.



I just don't know it.

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markhoward
post Jan 25 2022, 11:53 AM
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I've used a u-shaped muffler clamp that fits snug in the cap's groove. Once clamped in place, you use a screwdriver to pry against it working your way around the hub.
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double-a
post Jan 25 2022, 12:45 PM
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i always get the best luck with a large pipe wrench
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mepstein
post Jan 25 2022, 01:04 PM
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I knock it off with a hammer. Takes 10 seconds.
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Olympic 914
post Jan 25 2022, 01:11 PM
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Tried knocking it off with a hammer, that didn't work for me.

It just beat up the cap.

Ended up using a long brass drift and hammer, that gave me a little angle on it.

So there isn't a tool for this?

Muffler clamp idea sounds good though.

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Shivers
post Jan 25 2022, 01:31 PM
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QUOTE(Olympic 914 @ Jan 25 2022, 11:11 AM) *

Tried knocking it off with a hammer, that didn't work for me.

It just beat up the cap.

Ended up using a long brass drift and hammer, that gave me a little angle on it.

So there isn't a tool for this?

Muffler clamp idea sounds good though.


I would not pry against the centric ring though. Not without protection
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Mark Henry
post Jan 25 2022, 02:13 PM
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QUOTE(Olympic 914 @ Jan 25 2022, 02:11 PM) *

Tried knocking it off with a hammer, that didn't work for me.

It just beat up the cap.

Ended up using a long brass drift and hammer, that gave me a little angle on it.

So there isn't a tool for this?

Muffler clamp idea sounds good though.


You have to hit it with an outward glancing blow, different spot every time.
You can fix the cap easy with a couple big sockets and a vice, plus a body hammer or a blunt drift and a hammer. (IMG:style_emoticons/default/smash.gif)

I like the muffler clamp idea, but don't really like the prying bit. Next time I'll try it with a big slide hammer I have.

There is an 'outie' version of the cap that's on a set of 3" struts I have here, don't know if they have them for 3.5", but I do like them better than the inset caps.
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mepstein
post Jan 25 2022, 02:33 PM
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QUOTE(Mark Henry @ Jan 25 2022, 03:13 PM) *

QUOTE(Olympic 914 @ Jan 25 2022, 02:11 PM) *

Tried knocking it off with a hammer, that didn't work for me.

It just beat up the cap.

Ended up using a long brass drift and hammer, that gave me a little angle on it.

So there isn't a tool for this?

Muffler clamp idea sounds good though.


You have to hit it with an outward glancing blow, different spot every time.
You can fix the cap easy with a couple big sockets and a vice, plus a body hammer or a blunt drift and a hammer. (IMG:style_emoticons/default/smash.gif)

I like the muffler clamp idea, but don't really like the prying bit. Next time I'll try it with a big slide hammer I have.

There is an 'outie' version of the cap that's on a set of 3" struts I have here, don't know if they have them for 3.5", but I do like them better than the inset caps.

“You have to hit it with an outward glancing blow,”
Yep (IMG:style_emoticons/default/smash.gif)
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Krieger
post Jan 25 2022, 04:12 PM
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QUOTE(markhoward @ Jan 25 2022, 09:53 AM) *

I've used a u-shaped muffler clamp that fits snug in the cap's groove. Once clamped in place, you use a screwdriver to pry against it working your way around the hub.


Great idea! Maybe whack a drift on the muffler clamp?
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Cairo94507
post Jan 25 2022, 04:17 PM
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Yeah they can be tight. I use a hammer and work my way around the cap gently and it walks it out. (IMG:style_emoticons/default/beerchug.gif)
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robkammer
post Jan 26 2022, 07:19 AM
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I agree with the hammer, I used a plastic hammer and it didn't mess them up, even after I painted them and had to adjust the bearings. I also agree that whacking on them just doesn't feel right.
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mate914
post Jan 26 2022, 07:35 AM
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The picture shows' that the cap is installed too deep?
You might have to heat the hub slightly?
Matt (IMG:style_emoticons/default/flag.gif)
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mepstein
post Jan 26 2022, 07:59 AM
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The ridge on the caps let’s you hit it on a slight angle. A couple hard hits will do it. I took apart dozens of old struts and hubs when I worked at the shop.
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racer914
post Jan 26 2022, 09:49 AM
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While we are on the topic of dust caps, I'm looking for a couple if anyone has some spares laying around. (IMG:style_emoticons/default/biggrin.gif)
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emerygt350
post Jan 26 2022, 11:30 AM
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QUOTE(racer914 @ Jan 26 2022, 10:49 AM) *

While we are on the topic of dust caps, I'm looking for a couple if anyone has some spares laying around. (IMG:style_emoticons/default/biggrin.gif)


Anyone know what is the right cap for a stock 914? Are they the same for all? This is what AA shows.
http://www.autoatlanta.com/Porsche-Wheel-B...1434168400.html

but on the exploded diagram it shows a 5 bolt hub...
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mepstein
post Jan 26 2022, 11:33 AM
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QUOTE(emerygt350 @ Jan 26 2022, 12:30 PM) *

QUOTE(racer914 @ Jan 26 2022, 10:49 AM) *

While we are on the topic of dust caps, I'm looking for a couple if anyone has some spares laying around. (IMG:style_emoticons/default/biggrin.gif)


Anyone know what is the right cap for a stock 914? Are they the same for all? This is what AA shows.
http://www.autoatlanta.com/Porsche-Wheel-B...1434168400.html

but on the exploded diagram it shows a 5 bolt hub...

All 4 bolt 914 dust caps are the same. 5 bolt are different from 4 bolt and there is an early (large) and late (small)
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fixer34
post Jan 26 2022, 08:36 PM
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QUOTE(Olympic 914 @ Jan 25 2022, 11:48 AM) *

Trying to pull my front hubs off and can't get the dust cap off.

Tried large channel locks and tapping with a hammer, but all I am doing is messing up the dust cap.

Must be an easy way.



I just don't know it.

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Are we sure that is the right cap and not one that 'looks like it will fit..'. The caps that go on the outside of the lip at least give you a pry point to work them off. I can't believe the engineers would design something like this where you would basically have to damage/destroy the cap to get it off. Something doesn't seem right.
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mepstein
post Jan 26 2022, 08:42 PM
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QUOTE(fixer34 @ Jan 26 2022, 09:36 PM) *

QUOTE(Olympic 914 @ Jan 25 2022, 11:48 AM) *

Trying to pull my front hubs off and can't get the dust cap off.

Tried large channel locks and tapping with a hammer, but all I am doing is messing up the dust cap.

Must be an easy way.



I just don't know it.

Attached Image

Are we sure that is the right cap and not one that 'looks like it will fit..'. The caps that go on the outside of the lip at least give you a pry point to work them off. I can't believe the engineers would design something like this where you would basically have to damage/destroy the cap to get it off. Something doesn't seem right.

Yes. It’s the correct later hub centric cap and if you knock it off like I suggested, you don’t damage or destroy anything.
You don’t pry off the larger early ones. You also knock them off with a hammer. Prying may/will damage the aluminum hub.
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mate914
post Jan 27 2022, 08:16 AM
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Use the small ballpein hammer and wack it from side to side.
Like others are saying, it will come off. I just did one yesterday.
Matt (IMG:style_emoticons/default/flag.gif)
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ClayPerrine
post Jan 27 2022, 01:15 PM
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This is how you do it:

(IMG:http://www.914world.com/bbs2/uploads_offsite/i.pinimg.com-1143-1643310934.1.jpg)

Snap on dust cap pliers. They will pull the cap without damaging it.

There are two bumps on either side of the cap. Put the dust cap pliers behind the bumps. Then wiggle and pull on the pliers until the cap comes off.

Works great!

Clay
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