rock hard clutch lever - stuck at work

[seevtsaab]

Good luck getting this all sorted.
I was feeling somewhat immune on my 620 after 50K miles.

Curious if you're able to get this all together with just the 2X4 method, that'll be the extent of special tools I'll have at my disposal
should I check the nut at my next oil change.

[Privateer]

APTC is an oddball hub, doubt you'd find anyone outside a dealer with a hub tool.

wow $142 for the tool.  scrap 2x4's are almost free.

[DarkMonster620]

found this, from this forum in the interwebs,

[Speeddog]

found this, from this forum in the interwebs,
~~~SNIP~~~

I've got one of those, and they're very useful, for non-APTC wet and regular dry.
I forget whether they'll work on a dry slipper.

Problem with the APTC is the 'hub' is two parts, a center with the spiral spline and the inner flange, and an outer with the teeth to match the steels which has the outer flange (like a conventional pressure plate).
You can't grab anything useful on the APTC with that tool.

[Privateer]

Nick i was watching a video you posted from adler, talking about steel 1.5mm, 2.0mm blahblah, a hardened steel that looks different, a friction plate with a 'turned down edge' or something.

I looked at all mine.. and my old one.. the steel and the friction plates.. they all look the same and the steels are the same thickness (all 1.5).  is there some subtle diff I'm missing?

[Speeddog]

A video I posted?

[Privateer]

A video I posted?

well, it was a while ago.

That's not an APTC clutch in the video.
Disassembly/assembly of the APTC is a bit more involved.

Here's a couple videos.

These are from the manufacturer, Adige, it explains it fairly well, although the clutch they're working on isn't the Ducati unit.

APTC Video Installation

[Privateer]

well i did something make the beast with two backsing wrong because I broke off not 1 but 2 clutch spring bolts.

just make the beast with two backsing great.

[koko64]

They snap getting them out?

[BK_856er]

The bolts or the aluminum posts that the bolts screw into?

I'm thinking posts, and if so that is unfortunate.  Maybe the loose unit knocked things around?

Hopefully you can find a used piece (some folks ditch the APTC unit) or convert to a standard wet clutch.

BK

[Privateer]

i snapped the head off the spring bolts.  the first one I read the torque wrong.  adjusted my wrench and popped the other one.  not sure what happened.

strangely when i started looking at them, they're 2 different kinds of bolts.


With some creative drilling and dremel'ing, I've gotten one out.  the other, while I was drilling it, rotated and went 'down' the post.  not sure how I'm going to get that one out.

[BK_856er]

You lucked out then.  Use a reverse bit to drill that thing out.  Others might have better advice from first-hand experience.

Get a better low range torque wrench, or better yet use a careful touch by hand.  Those bolts are under tension by the spring and don't need much to keep them in place.  Just get 'em snug.

The dealer can set you up with new bolts.  I'd do all of them, if you dare remove the ones that were likely overtorqued.  I replaced my bolts/washers/springs when I did my plates.  Might even still have the old stuff.

BK

[Privateer]

You lucked out then.  Use a reverse bit to drill that thing out.  Others might have better advice from first-hand experience.

Get a better low range torque wrench, or better yet use a careful touch by hand.  Those bolts are under tension by the spring and don't need much to keep them in place.  Just get 'em snug.

The dealer can set you up with new bolts.  I'd do all of them, if you dare remove the ones that were likely overtorqued.  I replaced my bolts/washers/springs when I did my plates.  Might even still have the old stuff.

BK

took a couple hours but I got everything buttoned back up.  Thanks for the tip on the left hand drill bit.  Never even knew such a thing existed.  The other broken piece was a pregnant dog but I finally got it out.  The left twist did pull it 'up' some but then it just stopped.  so I drilled it pretty good with the smallest bit, then used he next biggest.  Then hammered the screw extractor in and backed out the broken piece.

Reinstalled everything, made sure all the plates were seated properly, gently torqued the new spring bolts.  reinstalled clutch slave and operated like normal.  I didn't have time to change the oil to start it up, but that'll be saturday night's project I suppose.

now to figure out where all this oily mist is coming from AND figure out why my crankcase breather weeps oil.

[BK_856er]

now to figure out where all this oily mist is coming from AND figure out why my crankcase breather weeps oil.

Make sure the oil isn't overfilled and replace the breather.  They are leak prone.  Go for a metal one if you have some spare $$.

BK

[Privateer]

here's what the extractor looked like post extraction (phrasing)