NPC Clutch not disengaging, T5

[LX_HATCH]

Hi,

I have just fitted a NPC clutch into my VP V6 with a T5 gearbox.

The clutch is not disengaging even with it adjusted so the pedal is very high.

The clutch is cable driven and it definitely moving the fork when I push the pedal down.

When I push the clutch in it feels ok, and I can feel the friction point but it doesn't dis engage.

i.e. When the motor is running with the clutch pushed all the way down, I cannot move the shifter from neutral into first.

Has anyone else had this problem?

Any ideas of the cause?

I'm bloody puzzled

Cheers Ryan

[delcowizzid]

silly question i know but did you put the side marked flywheel on the clutch plate towards the flywheel

[LX_HATCH]

Yeah I was aware of those markings and im very sure I didn't bloody stuff that up when fitting it.

Very frustrated, I have spent 2 complete days on the garage floor working on it

[BURNOUT BAZZA]

would be a bit hard to tell but are u sure the Thrust bearing is pushing the diapham enough?

[LX_HATCH]

I have yet to have a really good look through the fork hole, but from what I can see it is moving enough. I will be having a good look this arvo with a little sight mirror.

[Decicrate]

You may find that the ball that the clutch fork sits on may need to be adjusted.
With the pedal sitting very high that's what it sounds like to me.

You could try putting the box in gear and depressing the clutch and give the starter a quick hit and see if the car tries to move. Make sure you disconnect the EFI relay so there is no chance that the engine will fire.
If the car moves you defiantly have an adjustment issue.

[LX_HATCH]

Thanks for the comment.

How do I go about adjusting that?

Does that just move the centre of the fork where the bearing sits on, forward? i.e towards the pressure plate fins?

[NPreston]

I would also suggest the pivot post may need to be adjusted. I have recently fitted a "Race Clutch" to my V6 T5 in my VC and the pivot post had to be adjusted to get correct operation. I have a button clutch plate with modified pressure plate. Gearbox out job unfortunately.

[LX_HATCH]

**** lol..

[mischa]

Theres a diagram floating around on how to adjust the piviot point. Proper measurements and all but its not that hard to do off sight.

Really you want it so that when the fork is lightly pressed up agaist the clutch, its pretty much parallel to the bellhousing. So when you do press the clutch theres no slack before the thrust bearing hits the diaphragm.

To get this right i just removed the bellhousing from the gearbox and adjusted and tested fitted the bellhousing to the engine, removed made adjustment, refittted, so on, so forth...

The cable is really only there to adjust pedal height, not how much it realeases the clutch, but it dose affect it.

[LX_HATCH]

Had some success for a change lol.

I jacked up the car from under the diff, fired it up in gear with the clutch in and gave it some revs and hit the brake, the clutch plate broke free and now the clutch is working correctly

I think there was a little locktite on the clutch plate from when fitting up the bolts.

Thanks for all the comments, the clutch is sitting a little high but I won't be pulling all the gear out to adjust the pivot ball.

Maybe next time.

[mischa]

You adjust the height with the cable, the adjusters on the drivers side of the gearbox.

[Chirpstr]

To a certain extent Mischa. I need to adjust the pivot ball on mine too because my pedal is higher than normal... The cable is as tight as it can be par a tiny bit of slack but I will fix it via that pivot when I rebuild the box. So yeah, LX Hatch would be in the same boat as me I reckon.

[mischa]

But tightening the cable makes the pedal higher? Anyless that was a typing error? Lossing should bring it down.

But idealy the adjuster on the cable is what you use for height adjustment, but idealy the piviot point should be already adjusted correctly

[Chirpstr]

haha yeh my bad. What I was saying is I can't loosen it off any further otherwise I will have no clutch, unless I hit the firewall really hard lol.
The Piviot ball inside the bellhousing is at fault and you can adjust it for this very reason.

Edit: Oh and don't say it's a worn clutch because it's still relatively new and exactly the same from when I put it in new from box.

[LX_HATCH]

Yeah my problem is with the arrangement of the torana clutch pedal, it doesn't give the same amount of cable travel as a commodore for the same amount of pedal travel.

Consequently I need to push the pedal further to disengage the clutch.

Yes the pivot ball can be adjusted to fix this but for now im just going to live with it.

I can modify the pedal end too, which I might do as shown in the dodgy image below

[BURNOUT BAZZA]

maybe u can search out another pedal that will fit and and give more travel.

[dirt drifter]

hey all i know this thread is getting old but saves me starting a new one..

my 5.0 T5 vs did this to me coming home from work yesterday, it was working fine then i heard a 'clunk' and then the clutch ceased to work, still got feel (although slightly different) at the pedal, i tightened the cable as much as i could but it made no difference.

so im assuming that something is amiss with the pivot ball? although how that could happen in service is beyond me. any other possibilities?????

also if anyone has pics of the clutch fork/pivot ball setup could u post them up please? ive searched elsewhere but all i can find is pics of ford bellhousings that i suspect are different.

now the big question is, since it will most likely be a gearbox out job to fix. do i get it done where im working, in a town where i know no-one and will be charged full rate for the fix.... or limp it home 400+k up the highway where my champion mechanic mate will let me use the hoist and probably charge me a carton and pizza for it???? i only go thru 4 sets of lights the rest is 4th-5th gear highway/country town stuff. hmmm tough decision...

[ss_5spd]

hey guys iv got a problem with the clutch in my vn ss. with the cable adjusted all the way im still only getting half a pedal??? any ideas??

[BURNOUT BAZZA]

my best bet is a worn clutch. unless its new.

[Morton]

Dirt Drifter's post from January = bent clutch fork

SS_5spd, you need to adjust the pivot ball in your bellhousing to factory specs. These specs can be found in any Gregory's workshop manual. Unfortunately the only way to adjust the pivot ball is with the transmission off.