Clutch torque setting-please help

Post by **MattRuch** » Sat Jan 03, 2009 12:33 pm

I can't find a torque setting in my Haynes manual for the clutch to flywheel torque specifications.

Can anyone advise me what it is supposed to be, and if it's in the Haynes manual, please tell me what page to look to?

Many thanks

Matt

Post by **MattRuch** » Sat Jan 03, 2009 12:35 pm

Sorry...

1969 Morris Minor w/standard 1098 A-series engine

Post by **Longdog** » Sat Jan 03, 2009 1:19 pm

60lb ft

Post by **IslipMinor** » Sat Jan 03, 2009 2:06 pm

60lb ft

Matt,

Assuming you mean the 6 bolts/setscrews that attach the clutch pressure plate to the flywheel? They are 5/16" diameter bolts, which are 25 lbf. ft. maximum torque.

I don't have a Minor Haynes manual, but there is no reference to the torque figure in the Spridget Haynes manual or in the 'official' BMC manual for the Minor.

Post by **MattRuch** » Sat Jan 03, 2009 4:32 pm

Thank you both...I found an old A-series engine manual and it specified 20...so that's sorted...thanks again. I've got another problem...I'll make a new post.

Post by **Longdog** » Sat Jan 03, 2009 4:52 pm

sorry thought you meant Flywheel bolts

Post by **MattRuch** » Sat Jan 03, 2009 5:01 pm

It's okay mate! I probably could have been more specific...

But, I'd like to hear your thoughts on my latest tech question posting!.

Post by **Longdog** » Sat Jan 03, 2009 6:16 pm

Hi 25 lb ft sounds a reasonable figure, I just did mine up as hard as possible with a dob of locktite on the end.For the crank pulley I always use loctite as I had one come loose, and I tighten the drive dog with a pair of stilsons.Hope this helps.

Post by **rayofleamington** » Sat Jan 03, 2009 11:37 pm

For the crank pulley I always use loctite as I had one come loose,

me too - and they were done up to correct torque. However I'd forgotten the tab washer

I've never used loctite when there's a decent tab washer, however if you use the right grrade threadlocker it works wonders.

Post by **Longdog** » Sun Jan 04, 2009 7:01 am

I once had an oil leak where oil was tracking down the nose of the crank and out behind the locktab.Being generous with locktite helps there too.

Post by **bmcecosse** » Sun Jan 04, 2009 6:34 pm

Well - you should NOT put loctite between the pulley and the crank! It's only intended for the thread of the bolt. Or you could end up (as Leo ) struggling to get the wretched pulley off! It must have been a very loose fit if oil could get through!

Post by **Longdog** » Sun Jan 04, 2009 6:43 pm

Actually it was rtv sealant behind the washer.I'm sure you are aware that oil can get through very small clearances and the pulley is not designed to be an interferance fit so this is possible.It was a tiny leak after all but thanks for your concern

Post by **bmcecosse** » Sun Jan 04, 2009 6:50 pm

Ahh - you said 'locktite' (sic) ! I can only respond to what you write - and the threads should be kept correct since many others read/refer to them. And have never known a leak through there - it should be a 'close' but not interference fit. Firm push if it's a new one.

Post by **Longdog** » Tue Jan 06, 2009 2:16 pm

Sorry to anybody that may have taken my advice literally.For threads I use Loctite 542 and for the nose of the crank I used Loctite RTV sealant.Because I was non specific about the type of Loctite used in each instance this may have led to confusion.I shall try in future, to ensure where possible, that I leave no room for any doubt about the advice I give on this site.Once again please accept my sincere apologies.Oily striations on the crank pulley indicate this particular oil leak which although very small will get onto the fan belt with obvious detrement.

Post by **bigginger** » Tue Jan 06, 2009 3:21 pm

Phew - it would never do to leave bad advice here, would it ;)
a

Post by **bmcecosse** » Tue Jan 06, 2009 11:26 pm

Best to keep it accurate - others rely on it and may refer back to it anytime through the 'search' facility. Well done longdog for bringing it up to speed.

Post by **bigginger** » Wed Jan 07, 2009 12:33 am

It's something I believe too, but sometime it's easier to leave questionable advice, don't you find?
a

Post by **bmcecosse** » Wed Jan 07, 2009 11:36 am

Well - the way this was written might have encouraged folks to slap some Locktite(sic) on the crank nose when fitting the crank pulley - with possibly the future problem described elsewhere where the pulley won't come off! It's now been adequately explained - although I believe if the pulley is slack enough to let oil through, then it will fret against the key and there may be trouble ahead. RTV is unlikely to hold it for long.

Post by **Longdog** » Wed Jan 07, 2009 3:19 pm

Oil can move by capillary action which needs very little "gap" to get through.It strikes me that if you have not had the problem then nobody else has.My crank pulley is not a loose fit by the way.I think this is straying way to far off the original question any rate.I have clarified the "Loctite"thing so no harm done ehhh?Just take a chill pill.