Fitting crankshaft pulley - Engines Forum - Peugeot 306 GTi-6 & Rallye Owners Club

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Subject: Fitting crankshaft pulley

astragsi237

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Location: Chatham

Registered: 13 Mar 2009

Posts: 414

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Post #1

Can anyone walk me through how to fit a new pulley,Is it as easy as locking the tensioner with an allen key, undo 22mm bolt on the pulley & then straight swap with new one?

I've searched & seen the word woodruff key mentioned a few times? anyone care to explain?

I bought the whole alloy aux pulley set from rich_w & a new belt,I've changed the other two pulleys & belt tonight with a friend but couldn't get the bolt on the crankshaft pulley to budge.So I'm going to attack with the torch on Saturday

Bit of a noob to mechanics,Just trying to learn to tinker with my car instead of giving my mechanic £50 a hour

Cheers

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Posted 13th Sep 2012 at 21:35

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fatlapit

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Location: STOCKSFIELD

Registered: 02 Nov 2010

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Post #2

Dont torch the thing

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Posted 13th Sep 2012 at 21:37

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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

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Post #3

use a BIG bar, place in gear and have an assistant lean on the brake pedal, or use an impact gun and loosen crank pulley retaining bolt, DO NOT USE A BOLT IN THE HOLE.

remove aux belt, slide off pulley, make sure woodruff key stays in place, fit new shiny pulley, apply threadlock to bolt, refit and torque bolt, refit aux belt, job done.

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Posted 13th Sep 2012 at 21:38

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astragsi237

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Location: Chatham

Registered: 13 Mar 2009

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Post #4

I know this Will sound stupid but whats the woodruff key? I had my friend stick the car in gear & stamped on the brake but the pulley was still moving slightly (my clutch is on its last legs) hence why I'm going to heat the bolt up saturday & try again

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Phase 2 blaze yellow d-turbo:Off to scrap heaven
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Posted 13th Sep 2012 at 21:45

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midlife

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Location: Colne, Lancashire

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Post #5

What is is about "don't heat up the bolt" you don't understand Dunno

Use an impact wrench or gun.....
Listen to the advice your given or your next thread will be called "why do mechanics think I'm a tool"?

Cool

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Posted 13th Sep 2012 at 21:51

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fatlapit

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Post #6

Seals and heat dont mix well not at that temp. just have some weetabix n grow some muscles

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Posted 13th Sep 2012 at 21:54

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astragsi237

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Post #7

I'm working on the muscles front but I'm not overly keen on weetabix.OK i'll try & get hold of a impact gun

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Posted 13th Sep 2012 at 21:59

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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

Posts: 21,768

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Post #8

The woodruff key is a small chunk of metal which fits in the keyway on the pulley. If you look at your new pulley, in the hole in the middle you'll see a cut-out. The woodruff key slides in here. Yes

You don't need to do anything with the key except ensure it is still in place when you remove the old pulley. As long as it is, then follow the directions that Welshpug posted above. Smile

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Posted 14th Sep 2012 at 00:21

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bigbadbowen

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Location: Winchester

Registered: 21 Nov 2003

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Post #9

Lock the cams as well bud that will stop the whole lot turning Thumbs up

Posted 14th Sep 2012 at 00:42

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jeffers Forum Admin

Location: Leeds

Registered: 14 Dec 2003

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Post #10

bigbadbowen wrote:

Lock the cams as well bud that will stop the whole lot turning Thumbs up

Don't lock the cams when trying to undo the crank pulley, that's just asking for trouble. Put the car in gear and use the brakes with it to lock the engine. Why on earth would you use 2 6mm bolts to hold the cams then trust the belt to hold everything whilst you swing off the crank pulley bolt with a big bar? If the belt stretches or slips your engines mullered! Yes

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Posted 14th Sep 2012 at 01:02

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stan_306gti6 Forum Admin

Location: Kent

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Post #11

jeffers wrote:

bigbadbowen wrote:

Lock the cams as well bud that will stop the whole lot turning Thumbs up

+1

Never pin the crank or cams to undo bolts on this circuit. It will either snap the pins, damage the casings on the engine or cause timing belt damage. Yes

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Posted 14th Sep 2012 at 08:57

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fletch

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Location: The nearest Shell garage

Registered: 12 Jun 2004

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Post #12

Lock the flywheel

Posted 14th Sep 2012 at 09:37

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russbez

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Location: Inverness-Shire

Registered: 19 Dec 2005

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Post #13

iv always use an impact wrench/gun like mentioned above

fletch wrote:

Lock the flywheel

never seen one of these before
iirc theres gaps somewhere.... where does that go in?

edit: was thinking it would be hard to get it down the gap in the top of gearbox Dunno

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Posted 14th Sep 2012 at 10:16

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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

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Post #14

Good luck getting that anywhere near the flywheel without taking the gearbox off LOL

Windy gun ftw.

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Posted 14th Sep 2012 at 10:17

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jonnie205

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Location: Bicester

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Post #15

bigbadbowen wrote:

Lock the cams as well bud that will stop the whole lot turning Thumbs up

This will leave you with a lot of damage.

The only way realy is a good air gun, in gear and brakes and all that stuff may work but it wil just wing up the clucth springs

Posted 14th Sep 2012 at 10:35

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armzsc6

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Post #16

Gearbox off??? Thats what the hole in the block Is for behind the starter motor no need to remove the box just the starter and use an 8mm rod through the flywheel. Would never advise putting it in gear and a mate on the brakes either that's the quickest way to strip a tooth off the cambelt been there done that on a 6 lump and Xud9te lump as well.

Impact gun or lock the flywheel. Depending on where you are in Medway I'd say come See me at work in tunbridge wells tomoz and I'll wack it on for you for a score or something.

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Posted 14th Sep 2012 at 11:21

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fatlapit

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Post #17

balls to most of the above put itn gear and stamp on brakes to lock it up, then crank it off with a bar, failing that it you still can`t get it off put the socket and bar on, turn it clockwise so the bar end is on the floor put ya fut on the floor and bar and blip the starter over but dont run the engine that should crack it of!!

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Posted 14th Sep 2012 at 11:35

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armzsc6

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Post #18

fatlapit wrote:

Used the bar and starter method on a few occasions when I havnt had an impact gun handy just be careful Wink

. Though on my diablo 6 it was so tight it just went THUNK when cranked and didn't move lol

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Posted 14th Sep 2012 at 11:39

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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

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Post #19

I've never had a problem using the bar method with the vehicle in gear and an assistant on the brakes.

However, a completely reliable method is definitely the impact gun. I would advise trying to get hold of one to be honest, that way you can't go wrong. Yes

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Peugeot 306 GTi-6
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Posted 14th Sep 2012 at 13:12

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astragsi237

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Location: Chatham

Registered: 13 Mar 2009

Posts: 414

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Post #20

Thanks for the advice lads, I'm going to give my cordless impact driver ago with an adapter to carry the socket.Pretty sure it'll be man enough as I've used it before on some stubborn bolts to get me out of trouble

________________________________________

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Phase 2 blaze yellow d-turbo:Off to scrap heaven
Phase 2.5 platinum silver GTi-6:Just purchased :-D

Posted 14th Sep 2012 at 13:59

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armzsc6

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Post #21

Yeh should do the job if it doesn't straight away be persistent backwards forwards etc should crack the thread lock eventually. Just don't forget to thread lock it after Wink

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Posted 14th Sep 2012 at 14:31

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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

Posts: 21,768

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Post #22

armzs16 wrote:

Just don't forget to thread lock it after Wink

^^ This is extremely important. Yes

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Peugeot 306 GTi-6
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Posted 14th Sep 2012 at 15:21

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astragsi237

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Location: Chatham

Registered: 13 Mar 2009

Posts: 414

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Post #23

Got the thread lock at the ready Thumbs up

Cheers

________________________________________

Phase 1 bianca white GTi-6:SOLD
Phase 2 blaze yellow d-turbo:Off to scrap heaven
Phase 2.5 platinum silver GTi-6:Just purchased :-D

Posted 14th Sep 2012 at 17:43

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astragsi237

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Location: Chatham

Registered: 13 Mar 2009

Posts: 414

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Post #24

HELP!! I tried my best with my impact driver yesterday & it wasn't budging so I gave up,While I was having my tracking checked this morning I ask the lad If he would kindly release the bolt with his Air gun to which it didn't even move Sad

Any other ideas to get this dam thing off??

________________________________________

Phase 1 bianca white GTi-6:SOLD
Phase 2 blaze yellow d-turbo:Off to scrap heaven
Phase 2.5 platinum silver GTi-6:Just purchased :-D

Posted 16th Sep 2012 at 12:50

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fatlapit

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Post #25

use the starter motor!!!

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Posted 16th Sep 2012 at 13:05

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