Maybe the clutch thrust/throw out (whatever you want to call it) bearing requires replacing as its not spinning freely
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| clutch problem https://www.ausmini.com/forums/viewtopic.php?f=2&t=73587 |
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| Author: | venny [ Sun Oct 16, 2011 5:33 pm ] |
| Post subject: | clutch problem |
when cluch pedal puched in motor loads up and stalls .spent last night pulling clutch apart FOUND NOTHING.put back together stared mini ran fine .pushed clutch perect repeted and stalled again . anyone have any ideas |
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| Author: | drmini in aust [ Sun Oct 16, 2011 6:31 pm ] |
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Replace the clutch hose, it's acting as a check valve (not letting fluid back) so when you push again, clutch assembly goes in further, loads up against the 3 flywheel stops, and it stalls the motor. Mind you for this to happen, the 2 stop nuts against the clutch cover must be screwed out too far, or they are missing. |
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| Author: | peterb [ Sun Oct 16, 2011 6:57 pm ] |
| Post subject: | |
crank thrust bearings, check end float |
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| Author: | drmini in aust [ Sun Oct 16, 2011 7:01 pm ] |
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peterb wrote: crank thrust bearings, check end float
Get someone to watch the crank pulley when you push the clutch in... A little bit of endfloat is normal (might be up to .015" in a worn motor) but if it's moving 1mm or more, the thrust washers are worn out. |
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| Author: | venny [ Sun Oct 16, 2011 7:19 pm ] |
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just tried cluth again .clutch realeses perfect motor loads up even at part movement how ever noticed dropgears or someother part starts to rattle when pedal is pushed .could it be in gearbox .can start in gear (no clutch) and drive 0 and drive |
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| Author: | BALLISTIC [ Sun Oct 16, 2011 8:50 pm ] |
| Post subject: | |
Maybe the clutch thrust/throw out (whatever you want to call it) bearing requires replacing as its not spinning freely
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| Author: | drmini in aust [ Sun Oct 16, 2011 8:52 pm ] |
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Yeah I was going to suggest that might be seized, but the OP said he had all the clutch out, and was fine... 
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| Author: | peterb [ Sun Oct 16, 2011 9:14 pm ] |
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the noise might be the crank webs hitting if the thrusts are worn out.??? |
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| Author: | drmini in aust [ Sun Oct 16, 2011 9:16 pm ] |
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peterb wrote: the noise might be the crank webs hitting if the thrusts are worn out.???
More likely `dropped out' before this happens... 
Morris 1100 found them laying in the box on one of his spare motors. 
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| Author: | venny [ Mon Oct 17, 2011 6:14 pm ] |
| Post subject: | |
the motor a 1430 is lucky to have done 2000 k including gearbox(3sincro stait cut gears) cheked endfloat aprox 15thou |
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| Author: | TheMiniMan [ Mon Oct 17, 2011 6:24 pm ] |
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there sounds like a crank-thrust problem to me there are some bad (ombinations of cranks & thrusts out there that allow some "pinch" (for want of a better description) on the thrusts into the edge/radius of the crank main-journal if not sorted then this particular problem will act as tho the thrusts are fitted the wrong way around & grab-up the crank with the foot on the clutch i`d be ripping it all apart if it were mine |
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| Author: | drmini in aust [ Mon Oct 17, 2011 6:41 pm ] |
| Post subject: | |
TheMiniMan wrote: there sounds like a crank-thrust problem to me
there are some bad (ombinations of cranks & thrusts out there that allow some "pinch" (for want of a better description) on the thrusts into the edge/radius of the crank main-journal if not sorted then this particular problem will act as tho the thrusts are fitted the wrong way around & grab-up the crank with the foot on the clutch i`d be ripping it all apart if it were mine I'd also be careful not to have too little endfloat.. the .003" spec in the manuals is BS for any 1275 that's going to be revved hard. These cranks flex at high rpm and can grab the thrusts if insufficient clearance. I have a run pair of centre main shells to prove it... All good now, .007" endfloat works just fine.
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| Author: | peterb [ Mon Oct 17, 2011 9:13 pm ] |
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I'll put my money on the thrust washer still. About a million years ago before I was a mechanical genius, I sent a 1275 (1100S) motor to Repco to get rebuilt. It came back with no thrust washers, which I rectified before fitting to clutch/box parts, only to find after fitting head and puting push rods in, they'd put cam followers in upside down. Yes I did complain and they supplied me a new conversion kit and T/C gaskets. |
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| Author: | Convertible Mini [ Tue Oct 18, 2011 8:26 pm ] |
| Post subject: | Thrusts back to front |
Get someone to press the clutch pedal while you observe the crank shaft Pulley (Harmonic Balancer) see if it comes forward when pedal is depressed. Good luck. |
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| Author: | GT mowog [ Tue Oct 18, 2011 8:37 pm ] |
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It's over throwing, you're trying to push the crank in to the radiator. Fit the Over-throw nut and lock nut or if fitted, adjust them. |
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