Crankshaft pulley nut

Post by **chrisd87** » Sat Jul 29, 2006 11:34 pm

Could someone tell me what size the nut that holds the crankshaft front pulley on with is? I need to buy a larger spanner as my biggest won't fit but I don't know what size to buy.

Thanks.

Post by **rayofleamington** » Sun Jul 30, 2006 12:35 am

3/4 Whitworth (same as 7/8 BS)
Just don't confuse the numbers with AF!! Whitworth sizes were a standard based on bolt diameter (ie it is the size of spanner required a 7/8" dimater bolt)
Many people complain about these 'wierd' sizes but the system was extremely logical and very well engineered. The use of the standard spanner size per bolt size would help prevent people from over-torquing their fasteners, therefore safer!

Post by **RogerRust** » Sun Jul 30, 2006 8:49 am

harrymango had a stock of the correct ring spanners - I don't know if he has sold out yet.

Post by **chrisd87** » Sun Jul 30, 2006 11:22 am

Thanks - I'll go hunting for the correct one.

Post by **RogerRust** » Sun Jul 30, 2006 12:11 pm

Chris - your welcome to borrow mine if you come and get it.
I'm in North Beds not far from Sharnbrook

Post by **HarryMango** » Sun Jul 30, 2006 8:11 pm

RogerRust wrote:harrymango had a stock of the correct ring spanners - I don't know if he has sold out yet.

My 3/4W Ring spanners have gone but I still have some 3/4W open ended Spanners - NOS Bedford Vanadium - very good quality made in Sheffield. £3ea + postage if anyone is interested.

Rog

Post by **chrisd87** » Sun Jul 30, 2006 9:12 pm

Thanks for the offer Roger(s)

, but I bought a very large adjustable today from a local tool shop. If it's no good then I might get back to you HarryMango.

Post by **bmcecosse** » Sun Jul 30, 2006 10:25 pm

Adjustable - arghhhhh !

Post by **brixtonmorris** » Tue Aug 01, 2006 3:23 pm

adjustable is no good as you can not hit it firmly with a soft mallet.

Post by **Kevin** » Tue Aug 01, 2006 3:28 pm

Adjustable - arghhhhh !

Agreed

Post by **chrisd87** » Tue Aug 01, 2006 7:02 pm

Well it worked fine for me, plus it does mean you only have to buy one spanner rather than a number of different ones - handy when you're skint

.

Post by **Kevin** » Tue Aug 01, 2006 9:26 pm

handy when you're skint

True but they do damage to nuts ect and even round them off when they slip.

Post by **HarryMango** » Tue Aug 01, 2006 9:56 pm

chrisd87 wrote:it does mean you only have to buy one spanner

I've just come out in a cold sweat - I had a nightmare that I only had 1 spanner - nooooooooooooooooooooooooooooooooooooooo

Rog

Post by **chrisd87** » Tue Aug 01, 2006 10:44 pm

lol I meant that you can use it for a range of sizes!

Post by **brixtonmorris** » Tue Aug 01, 2006 11:19 pm

chrisd87 wrote:Well it worked fine for me .

hi Chris, sometimes these nuts can be very difficult to undo, you never know untill you come to undo one. like the cam pully wheel nut. the best tool for these is the air rachet. just blows them away.

Post by **chrisd87** » Wed Aug 02, 2006 9:41 am

Yes both of them were a real pain - I had to bash away with a mallet to get the pulley nut off, and had to drill/chisel off the cam pulley wheel (I have a spare).