Clutch slip?
 

Hi guys,
Have a pointy which a few weeks ago slowly started developing more and more clutch slip, having done nothing to alter the clutch and it getting progressively worse I (and mechanically minded friend) inspected the clutch which didn't look too bad but was showing signs of wear!
To be on the safe side, for piece of mind and because it was all in bits anyway I fitted a new clutch with heavier springs! Adjusting the clutch took almost all of the screw (flat head screwdriver bit with 10mm lock nut) to get the right bite etc and its still slipping like before!

Not too bad in 1st, 2nd and 3rd but as you roll on throttle in 4th and 5th it slips pretty badly (unless you roll on really really slowly) and in 6th gear its nigh on impossible to accelerate at all!

Any ideas for adjustment/ things to check or replace people? Or just generally any advice! May have left some vital bits of info out so ask away if you need more?
Thanks in advance


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Re: Clutch slip?
 

Have you done the full adjustment of the release mechanism, starting with the clutch cable fully slackened off?

Clutch slip?
 

If you get no joy, pm me and I'll sort you out with the number of a good mobile mechanic I use in our area (he doesn't charge vat so is cheap too).

Re: Clutch slip?
 

Sounds like something is wrong with the lifter/worm gear.Are you sure you are leaving the correct amount of free play in the system?

Re: Clutch slip?
 

I've got this problem too just now. Only happens at full throttle at high rpm. I've fitted a new cable and checked the adjustment but can't seem to fix it.

Re: Clutch slip?
 

Dan and Daz. just out of interest what oil brand are you both using?

Re: Clutch slip?
 

Rock Oil 10W40 semi synthetic

Clutch slip?
 

Previously castrol 10w40 semi synth, hellfrauds 10w40 semi synth since clutch change!


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Re: Clutch slip?
 

Dan did you soak the friction plates in oil before fitting them?

have no idea Daz but i would suspect something is not adjusted right.

Re: Clutch slip?
 

Yep, ended up being soaked for 3 days in the same oil i used to re-fill engine again.

I dont recall slackening the lower adjuster, so will give that a go at some point this week... Failing that how would i go about checking the worm gear/lifter? Is that something that is adjustable or if its gone wrong its kaput and i need a new one?

Re: Clutch slip?
 

there is a guide on here somewhere.

slacken off clutch leaver adjuster all the way in.

take sprocket cover off.

get a 10mm spanner and a flat screwdriver then put screwdriver on slot on middle of screw then slacken off 10mm nut. turn nut a good 2 turns out the way then turn screw inwards till you feel it come to rest then back out 1/8th of a turn.

holding the screw in place with screwdriver tighten nut back up.

tighten clutch leaver adjuster till there is about 2-3mm 'free play' gap in leaver between perch and leaver.

check that clutch works.

put sprocket cover back on.

go for ride and adjust clutch leaver to your own preference.

Re: Clutch slip?
 

if that doesnt work.. do i assume the worm drive is cream crakered?

Re: Clutch slip?
 

doubt it. they are only burgred when they loose their balls or seized.

i do things slightly different to above in that i take the leaver adjuster all the way out then back off the worm screw till it's just firmly touching then back the leaver adjuster in. till i get required bite in clutch. but that's me.

Re: Clutch slip?
 

Knackered worm drive is more likely to mean you can't release the clutch.

Re: Clutch slip?
 

A knackered lifter / worm drive, means that less of the pull at the lever is converted to push on the clutch release rod. This significantly narrows the range of adjustment available in which the clutch will both engage, and disengage fully when you use the lever, across a full range of temperatures.

The lifter, unfortunately is in a position where it tends not to receive a lot of maintenance, and is made of an alloy that does tend to get worn by the bearings in it, especially if it gets dry and gritty.

If you cannot adjust the clutch to a point where it is engaged / disengaged fully then the lifter is not the only possibility but it is a likely culprit. Go through the adjustment carefully, and make sure you're adjusting the lifter with slack in the cable, with the lifter arm at 90 degrees (pointing directly right), and that you're definitely backing off the screw a little before tightening up the lock nut. If the screw is touching the clutch push rod when cold, once everything warms up it can start fractionally disengaging the clutch, leading to slippage. Adjust first, it's free :)

Jambo

Edit: There's a picture version of the standard "Sid Squid" post here

Clutch slip?
 

Clutch adjusted properly and still slipping! Which part of the worm drive needs replacing or does it come as a complete part? (Suzuki part number would be handy if anyone knows it??)



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Re: Clutch slip?
 

This may be of some help?link

Re: Clutch slip?
 

Can anyone confirm if its just part 17 i would require?

Re: Clutch slip?
 

I don't think that's your problem myself unless you've had to tighten the screw that hard into it to make it release when needed that it's opening the pack.

Re: Clutch slip?
 

Knackered lifter won't cause clutch slip - unless you really screw up the adjustment. But you don't need a knackered lifter to get the adjustment wrong of course.

The lifter does exactly that, lifts the clutch - if it's goosed it won't separate the clutch parts correctly leading to clutch drag, not slip.