What Grease for Clutch Replacement Parts ?

[RabbitGTI]

Pivot, guide tube, input shaft splines, what is the best grease and are there any to avoid?

 

[jmodge]

I have never used any on any vehicle, grease and clutches don’t go together in my opinion. Just check for burrs and good finish on any contact surfaces

 

[CableJockey]

There is a type of stuff called "spline lube" that can be found at various auto parts places. I think it is just a form of moly grease (for the high temps). I don't think there will be much consensus on good/bad in this application. (I've known friends that used copper anti-seize without issue)

The primary thing is to use very small amounts and remove any excess, to prevent any possibility of the grease melting and getting on friction material.

 

[Vince Waldon]

Yup, I'd recommend the specific spline grease for sure. Have seen both "don't need no grease" and "this stuff will do" backfire over the years.

Cheap, but priceless.

 

[RabbitGTI]

Alrighty, thanks, will get some spline grease. Need a few bolts from the dealer anyway. Damn transmission got stuck and wouldn't come out and I'm in no rush, so I gave up. I think taking off the passenger side drive flange and the mount bracket on the transmission will really help get it out. I've never taken one out of an A5 before. Any tips?

 

[RabbitGTI]

Do you guys replace ball joints with pressed in bolts if you remove the nuts ? I used to replace the bolts in the older style ones.

 

[RabbitGTI]

All torn down and there is a small hole in the end of the engine. Looks like a piece of a pressure plate got between the flywheel and engine. I have never seen that before. Anyone know if the hole can be welded up (it's aluminum)? If that won't work, any leads on a source of good, low mileage used engines?

 

[CableJockey]

Not sure I follow your ball joint question, but if you're asking if it's okay to reuse your ball joint and hardware after disassembly, I don't see it being a problem. The bolts aren't anything special (stretch/tty) as far as I know.

As for your "hole", do you have some pictures? What were the circumstances? Did a dual-mass clutch detonate?

 

[RabbitGTI]

I think dual-mass is ok, didn't look that closely. What is the easiest way to post photos on here.

 

[CableJockey]

Not sure what the easiest way is, but I have used https://postimages.org/ without problems.
No account required, creates links right away.

 

[RabbitGTI]

Thanks, will post photos in the morning.

 

[RabbitGTI]

Anyone know if the lower timing chain cover is replaceable on a 2.5 without pulling the head ? Or is there a way to fix the hole ? JB Weld, aluminum solder, welding, anything ?

 

[RabbitGTI]

https://i.postimg.cc/JtV4p2GV/IMG-20201207-171443942.jpg

Leak behind flywheel after trans removal


https://i.postimg.cc/SRxyhKTr/IMG-20201207-182802567-1.jpg After removing clutch and flywheel

https://i.postimg.cc/KzfHqkjZ/IMG-20201207-171421198.jpg Debris in transaxle.

 

[CableJockey]

I'm not familiar with the 2.5... So I can't comment on replacing parts.
It looks like the throw out bearing disintegrated and a piece of it is what got caught: one of the balls in the bell housing, perhaps.
I know that I have used jb weld on oil pans in the past without issue, but I would be concerned using it in your situation... If it fails and starts leaking again, there would be no way to easily remedy it: you'd have to once again pull the transmission...
It's possible it could be welded, but it may damage things on the reverse side in the process.

I hope someone with specific knowledge of your engine is able to provide better insight.

 

[RabbitGTI]

Thanks, I'm going to replace the lower timing chain cover. They are cheap used and as far as I can tell easy to swap out.

 

[jmodge]

I used a product called Devcon on a Harley case and it held up for years, JB on the bottom of my Jetta trans with no problem. That obviously isn’t under pressure. It all depends on your confidence.

 

[RabbitGTI]

Using ultra black RTV to assemble the covers and block, just ordered the cover for $40. I'll report back how this goes.

 

[RabbitGTI]

Got the lower cover and clutch replaced. What the hell is this and where does it go ? https://i.postimg.cc/vHkMYJTq/IMG-20201222-154405527-TOP.jpg After this I only have the master cylinder to do.

 

[RabbitGTI]

Replacing the master cylinder, kind of a ***** to get clutch pedal assembly out. I put the return spring back in and ordered a new retaining clip for the master cylinder ball. The clip holds it in the pedal assembly. Looks like attaching the new clip to the ball and shoving the ball and clip into the pedal as one unit is the correct assembly technique. Correct? Is there supposed to be any retaining hardware on the spring? It looks like it just sits in there on a couple detents. Thanks.

 

[Nuje]

What the hell is this and where does it go ? https://i.postimg.cc/vHkMYJTq/IMG-20201222-154405527-TOP.jpg

Looks to me like a different version of the brace that goes from the transmission mount bracket over to the top of the transmission.
For future reference, if you hit CTRL+P (I think, on Windows) or COMMAND+P (Mac), or the little "insert image" icon in the toolbar, and then paste in that i.postimg.cc....jpg URL, you get a resizable image like below: