The Triumph Dolomite Club - Discussion Forum

Good evening all, i have just started removing parts to clear the way for timing chain replacement, Rad out fan off bonnet off, however hit a snag can anyone advise how to remove the crank pulley? as engine is turning over whilst in gear. is this 46 mm Nut threaded backwards?

wolf1000s wrote: ↑Sat Apr 13, 2024 7:36 pm Good evening all, i have just started removing parts to clear the way for timing chain replacement, Rad out fan off bonnet off, however hit a snag can anyone advise how to remove the crank pulley? as engine is turning over whilst in gear. is this 46 mm Nut threaded backwards?

No, just VERY tight!

There are 2 methods to remove it, a) remove the starter and lock a screwdriver in the ring gear. Then use an impact gun to remove the bolt, or b) a bit more violent but it works, put your socket on a long knucklebar, wedge the end of the bar against the chassis and crank the starter.

HTH, Steve

It’s NOT a 46 mm nut, it’s an imperial bolt. If you use a 46 mm socket or spanner you are likely to round off the corners and make the job harder yet!

Have you read the threads about aftermarket chain tensioners? Do not fit a Rolon brand tensioner.

I use an Impact Bar, (Sealey VS786), similar to what is seen in the photo.

The imperial sized ½ drive socket is mounted at the bottom. Give the head of the shaft, above the hand grip a good smart whack with a decent sized hammer and it will free the bolt.

xvivalve wrote: ↑Sat Apr 13, 2024 9:04 pm It’s NOT a 46 mm nut, it’s an imperial bolt. If you use a 46 mm socket or spanner you are likely to round off the corners and make the job harder yet!

Yes it's a bolt, but IIRC 46mm is almost exactly 1 and 13/16" (give or take 0.2 mm) which is the Imperial size of the bolt head. I use a 46mm Metro balljoint socket I bought years ago, Snap On, flank drive, 6 point and impact drive compatible. Trust me, it don't slip or round off the bolt head!

Steve

I’m a bit confused here,
is a slant four crankshaft pulley bolt head not 1-1/2”AF?
(Roughly 38mm)


Thanks
Ian

Although i no longer have a Sprint i still have the crankshaft pully socket on a shelf in the garage and it is one and a half inch AF socket

I stand by my previous comment...just couldn't be arsed to go to the garage to double check the actual size

OP doesn't say which engine! I just assumed, seeing as he described having a 46mm socket, that it was an OHV car. They have timing chains too!

Steve

Ah, in an earlier post the OP describes his Dolomite 1500...I think they'd call me guilty of 'cognitive bias' in modern parlance!

^^^
What Steve said!