KV6 Idler Pulley thread - Auxiliary Belt

M74 · 22nd February 2018, 09:37

Does anyone know if the idler pulley is a left or right handed thread? Is it clockwise to undo?
I know the tensioner pulley is clockwise to undo (edit. no it isn't) but I'd like to make sure about the idler before I start getting heavy with it.

Mike Noc · 22nd February 2018, 18:08

I don't know, as I have never worked on one, but I can't see any reason for it to be a left hand threaded bolt.

The tensioner pulley needs to be left handed only so it doesn't undo when you take the tension off the belt.

M74 · 22nd February 2018, 19:55

Quote:

Originally Posted by Mike Noc

I don't know, as I have never worked on one, but I can't see any reason for it to be a left hand threaded bolt.

The tensioner pulley needs to be left handed only so it doesn't undo when you take the tension off the belt.

Thanks Mike, I thought it might have something to do with the direction of rotation of the pulley. I'll find out at the weekend and post up.

andy willi · 23rd February 2018, 06:44

definitely right hand thread

andy

dai1983 · 24th February 2018, 06:06

I mistakenly thought that there was just a tensioner pulley so I only ordered that. This thread made me investigate further and I bought an idler too which is probably what’s making the noise on my car.

Probably too late for you but Mister Auto do the INA one for just under £30.

M74 · 24th February 2018, 15:34

Quote:

Originally Posted by dai1983

I mistakenly thought that there was just a tensioner pulley so I only ordered that. This thread made me investigate further and I bought an idler too which is probably what’s making the noise on my car.

Probably too late for you but Mister Auto do the INA one for just under £30.

Yeah too late, already got mine, thanks anyway.
just to clarify:- the idler pulley bolt is a right hand thread -
and the tensioner pulley bolt is a right hand thread.

22nd February 2018, 09:37	#1
M74 Loves to post 2 x 75 Saloons + MG ZTT Join Date: May 2008 Location: Cumnock Posts: 254 Thanks: 29 Thanked 28 Times in 26 Posts	KV6 Idler Pulley thread - Auxiliary Belt Does anyone know if the idler pulley is a left or right handed thread? Is it clockwise to undo? I know the tensioner pulley is clockwise to undo (edit. no it isn't) but I'd like to make sure about the idler before I start getting heavy with it. __________________ If it ain't broke take it apart to find out why it still works. Last edited by M74; 24th February 2018 at 15:36.. Reason: correction

22nd February 2018, 18:08	#2
Mike Noc This is my second home Rover 75 CDT Manual Connoisseur SE, Rover 75 CDT Automatic Connoisseur SE & a Freelander Td4. Join Date: Jul 2009 Location: Hampshire Posts: 11,588 Thanks: 3,470 Thanked 3,119 Times in 2,247 Posts	I don't know, as I have never worked on one, but I can't see any reason for it to be a left hand threaded bolt. The tensioner pulley needs to be left handed only so it doesn't undo when you take the tension off the belt.

23rd February 2018, 06:44	#4
andy willi I really should get out more....... PRE LAUNCH 75/ZT 190/XJ 550 Join Date: Jan 2007 Location: carcroft doncaster Posts: 2,866 Thanks: 101 Thanked 680 Times in 342 Posts	definitely right hand thread andy

24th February 2018, 06:06	#5
dai1983 Newbie 75 Saloon Join Date: Nov 2017 Location: Yeovil/Barnstaple Posts: 27 Thanks: 1 Thanked 2 Times in 2 Posts	I mistakenly thought that there was just a tensioner pulley so I only ordered that. This thread made me investigate further and I bought an idler too which is probably what’s making the noise on my car. Probably too late for you but Mister Auto do the INA one for just under £30.