remmington
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Post by remmington on Jul 18, 2015 21:08:13 GMT 1
1997 Toyota 90 series landcruiser.
Slipping clutch!
Gearbox off today! Plate worn out!
Fitted Blueprint clutch.
On road test after fitting. Judder on take up and slight slipping when engine speed raised!
Bled clutch! No air, then air, then no air, then air!
Then looked up under dash, new master cylinder fitted, last mechanic made a real mess of adjusting the threaded piston bar up and pedal stop.
Took master cylinder off and it all fell apart. As the pedal stop was allowing the pedal arm to try and force the piston backwards out of the cylinder.
Which I am preying was overfilling the cylinder causing the slip (no pedal free play). Too much hydraulic throw, as the plate wears it just exaggerates the problem (I have had this problem on old lorries).
Ordered new cylinder (here on Tues).
I am preying the slipping was a pedal freeplay issue! As I really don't wanna remove the gearbox again.
But in my heart of hearts I think it is gonna have to come off again. (Another five hours of my life wasted!)
Anybody else had the same issue!
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Post by Rhubarb on Jul 19, 2015 0:09:13 GMT 1
Methinks a master and getting the right adjustment on the threaded rod will sort it  |
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french crap fanatic
Apprentice
french car specialist based in dagenham east london
Posts: 3,355
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Post by french crap fanatic on Jul 19, 2015 1:19:29 GMT 1
Fitted a bp clutch to a Sedona years ago
Couldn't change gears,pulled it all out again,couldn't see anything wrong visually
Fitted a. New bp clutch,all was well
In your case,I reckon masters caused all the problems
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dave
Tea Maker
Posts: 702 
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Post by dave on Jul 19, 2015 12:01:24 GMT 1
1997 Toyota 90 series landcruiser. Slipping clutch! Gearbox off today! Plate worn out! Fitted Blueprint clutch. On road test after fitting. Judder on take up and slight slipping when engine speed raised! Bled clutch! No air, then air, then no air, then air! Then looked up under dash, new master cylinder fitted, last mechanic made a real mess of adjusting the threaded piston bar up and pedal stop. Took master cylinder off and it all fell apart. As the pedal stop was allowing the pedal arm to try and force the piston backwards out of the cylinder. Which I am preying was overfilling the cylinder causing the slip (no pedal free play). Too much hydraulic throw, as the plate wears it just exaggerates the problem (I have had this problem on old lorries). Ordered new cylinder (here on Tues). I am preying the slipping was a pedal freeplay issue! As I really don't wanna remove the gearbox again. But in my heart of hearts I think it is gonna have to come off again. (Another five hours of my life wasted!) Anybody else had the same issue! If the cylinder is of clutch is closed find out now if it slips push it outside and start it in gear you know soon enough saving you the trouble of waiting few days before realizing the trany needs to come of eventually giving you 2 day head start |
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Post by mayfly on Jul 19, 2015 16:04:24 GMT 1
Not realy sure what Dave was saying there but if it was , remove slave cylinder , start it in gear and see if the clutch still slips, then yes this will tell you whither its a hydrolic or a mechinacal issue
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remmington
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Post by remmington on Jul 19, 2015 19:06:46 GMT 1
Tried starting in gear Sat (but just could not get it away).
I also soaked slave up with WD 40 behind rubber boot to see if that was sticking!
Not gonna be easy to remove slave either without lifting it, and it is stuck outside with a burst master cylinder at the moment!
Can't really get to clutch fork thru wheel arch to give it bang backwards either.
Try master cylinder Tuesday!
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dave
Tea Maker
Posts: 702
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Post by dave on Jul 19, 2015 20:57:03 GMT 1
That's pretty much what I meant lol
sorry was in a hurry
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magnus
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Post by magnus on Jul 19, 2015 23:12:44 GMT 1
Had a similar problem many years ago on a triumph dolly sprint.
After removing & refitting the new clutch 3 times & replacing the cylinders, it turned out to be the flexible hydraulic hose that was trapping the fluid !
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remmington
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Post by remmington on Jul 20, 2015 6:55:39 GMT 1
Had a similar problem many years ago on a triumph dolly sprint. After removing & refitting the new clutch 3 times & replacing the cylinders, it turned out to be the flexible hydraulic hose that was trapping the fluid ! I have had the same thoughts about the hose! (plus have inspected the metal pipe to see if we have crushed it removing or refitting the gearbox) But I can prove the hose theory by forcing the clutch fork arm or slave cylinder piston back from a rested clutch pedal position! (that is if I could get to it). It bleeds ok, the fluid runs easy! Well it did till the top master cylinder fell apart! It could also bet the thrust bearing jamming up on the guide tube! Problem is I did not do the job, one of the lads who works for me did! So all the things I keep thinking about I did not inspect while the gearbox was off! Gonna have a play with hydraulics when the master cylinder arrives Tues. Another problem is I doubt if we will have time to remove the gearbox again this week! I always think too much about a workshop job that goes wrong. What you must do, is dismiss it from your mind till the next stage happens. |
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remmington
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Post by remmington on Jul 20, 2015 20:25:53 GMT 1
Slave cylinder arrived today!
Fitted bled up and adjusted!
Biting point good, free play now good!
Clutch still juddering and slipping!
Re-checked BluePoint part numbers, they reckon parts supplied correct, will only know when we measure it after stripping it again?
Ordered Sachs clutch and release bearing!
Will re-strip Saturday with a view to skimming flywheel.
Job is good while it is going right, not so good when jobs go bad!
Customer moaning! His attitude from this point will reflect the size of the bill he gets!
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Post by Noberator on Jul 20, 2015 21:27:00 GMT 1
Slave cylinder arrived today! Fitted bled up and adjusted! Biting point good, free play now good! Clutch still juddering and slipping! Re-checked BluePoint part numbers, they reckon parts supplied correct, will only know when we measure it after stripping it again? Ordered Sachs clutch and release bearing! Will re-strip Saturday with a view to skimming flywheel. Job is good while it is going right, not so good when jobs go bad! Customer moaning! That ain't workin' that's the way you do it Money for nothin' and chicks for free Now that ain't workin' that's the way you do it Lemme tell ya them guys ain't dumb Maybe get a blister on your little finger Maybe get a blister on your thumb Serves him right. |
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Post by valhalla on Jul 20, 2015 23:51:35 GMT 1
Slave cylinder arrived today! Fitted bled up and adjusted! Biting point good, free play now good! Clutch still juddering and slipping! Re-checked BluePoint part numbers, they reckon parts supplied correct, will only know when we measure it after stripping it again? Ordered Sachs clutch and release bearing! Will re-strip Saturday with a view to skimming flywheel. Job is good while it is going right, not so good when jobs go bad! Customer moaning! His attitude from this point will reflect the size of the bill he gets! This reminds me of a 300TDi Defender LWB problem I had. It wasn't slipping so much, but the juddering was getting worse and worse as the weeks went on. The solution was under the gearbox mounts themselves, or more precisely, under the gearbox crossmember that bolts to the chassis longitudinals just under the front seats, and supports the gearbox mounts. Although the gearbox mounts were fine, when I dropped the crossmember out, the chassis had disappeared into rust/holes behind it. So the whole crossmemember had not been supported in the chassis properly. It's a design fault with the later Defenders; the gearbox crossmember now had massive plates welded to the ends of it, so they trap loads of salty water against the chassis longitudinals. I made a load of fish-plates and decent chassis repair pieces, cut the rot right out, then welded it all back smooth. Problem went away overnight. |
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Post by Rhubarb on Jul 21, 2015 23:16:37 GMT 1
At least these are easyish to do, just damned heavy |
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remmington
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Post by remmington on Jul 25, 2015 18:03:02 GMT 1
Update...!
Landcruiser on ramp today!
45mins gearbox on the floor! (three of us waded into it).
While the flywheel looks OK!
You can see where my Russian fitter rubbed emery cloth over it when he fitted new clutch.
Test drive with new clutch has polished three high spots about the size of 10p coins on it.
Reason clutch is slipping it only has contact area of three 10p coins.
It took longer to get three dowels out of the flywheel than to remove the gearbox again.
Will get it skimmed this week and put it back together.
Owner came and inspected at lunchtime! He is very up beat about it now! Changed his attitude? (not sure why?)
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remmington
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Post by remmington on Aug 1, 2015 19:03:11 GMT 1
Landcruiser done!
Skimmed flywheel did the trick!
Went with customer on road test this afternoon! We both drove it. He was happy!
From a business point of view!
I doubt now if I have earned out of the job! But I don't think I have lost!
Customer was grumpy half way thru the process, but paid the bill and booked his wife's Honda in for an MOT, service, aircon re-gas and cam-aux belt, at the same time.
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