Installing clutch--a question.

Brent Mills · #1 (**permalink**) 07-10-2003, 11:03 PM

Are you supposed to put any grease on the splines?

PatBuckley · #2 (**permalink**) 07-10-2003, 11:39 PM

Yes - a light coat.

Brent Mills · #3 (**permalink**) 07-10-2003, 11:59 PM

Thanks Pat, that's what I did last time, but just wanted to be sure.

By the way, do you know what the torque specs are for the pressure plate to flywheel (mccloud flywheel & plate)? I torqued them last time for consistency, but didn't have the exact torque spec.

Turk · #4 (**permalink**) 07-11-2003, 12:35 AM

Brent,
My Mcleod was torqued to 60 lbs WITH lube. I don't know what it is without.

TURK

trularin · #5 (**permalink**) 07-11-2003, 05:24 AM

I just did this, flywheel is 60 pounds with lube to seat the flywheel. Then one bolt is removed and washed in solvent. Apply loctite to the threads of that bolt and retorque it at 65 - 70 pounds. Do all the bolts.

Flywheel to pressure plate is 40 pounds first time ( 5/16 x 3/4, Grade 8 ) with lube. Pull one screw at a time and apply 272 to it. Retorque all to 45 - 50 pounds.

Hope this helps, I broke an ARP bolt off in the crank. Had to replace all the bolts. Ford bolts appear to stand up better than ARP at this application.

Mr.Fixit · #6 (**permalink**) 07-11-2003, 08:19 AM

I don't lube the splines with grease, I prefer graphite spray. Nor do I lube the bolt threads, then remove/clean/apply locktite. I just give them a squirt of brake cleaner, along with the threaded holes, apply red locktite, and snug them evenly. Then get the torque wrench.

TRULARIN, I hope you didn't use 5/16" bolts torqued to 50 pounds on a windsor pressure plate, they take a metric bolt (m8 ?) torqued to half that value.

trularin · #7 (**permalink**) 07-11-2003, 08:59 AM

MrFixit, no, I have a 1971 flywheel, uses 5/16 Bolts. I didn't use to follow this practic, I just used to torque and go, but these last bolt and clutch problems have me following this proceedure. This was advised to me by ARP.

Thanks for your note. I am thinking about your comment about the pressure plate torque, you might be right ( being at work and not able to see what I had written down ).

Trularin

Brent Mills · #8 (**permalink**) 07-11-2003, 09:18 AM

What kind of lube are we talking about for the bolts? The last time I did this (unfortunately a couple weeks ago), I pretty much used Mr Fixit's method. Are there pro's and cons of each way?

Richard Hudgins · #9 (**permalink**) 07-11-2003, 10:02 AM

Brent,

I agree with MrFixit's method. Just make sure that the bolt and the receiving threads are clean.

The thread locking compounds act as a lubricant during the tightening process. As they are anaerobic adhesives they do not set up until the bolt is in place. (Note, you will have to move fairly quickly if you use "the red" compound. this is one of the quickest setup compounds.)

Using the lubricate and remove method, you will have very hard time cleaning the receiving threads adequately. I also do not like the removal of a torqued bolt out of a pattern of torqued bolts. This introduces a fair amount of stress on the clamped component. (There is a very good reason that you torque bolts in a clamped design pattern progressively.)

Brent Mills · #10 (**permalink**) 07-11-2003, 10:20 AM

Ok, so now I have threads which have been locktited and subsequently removed after set. I'm not looking at the threads right now, but I would presume there's locktite resedue in there. Do I clean thoroughly or just apply new locktite? If I need to clean, how would you suggest this is done?

trularin · #11 (**permalink**) 07-11-2003, 10:59 AM

Originally I had a pressure plate problem and ended up replacing the entire clutch assembly. When I put the flywheel back on, I ran the ARP bolts to around 100 pounds and one broke ( amazing )

So I called ARP and explained what had happened. The engineer said that I was fighting the loctite while I was torqueing the bolts. I also was running them to high, 70 pounds was all they needed.

His recommendation was for me to:

1. lude the threads and install the bolts at a lower torque like 60 pounds.

2. Removed each bolt, individually and clean the threads.
3. Apply loctite 272 and immediately install the bolt and torque to 65 to 70 pounds.
4. All of the threads would need to be chased before I started.

So, if you had loctite on your bolts before, it is recommended to chase the threads before starting.

If you are interested, Chris Brown is the engineer at ARP I talked to. But I understand that Chris Lasky is their head trouble shooter. # is 805 - 525 - 1497.

After the flywheel is seated, you might want to do the same for the pressure plate bolts.

Hope this helps.

Trularin