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Different manufacturers produce clutches that vary in detail so there is no hard and fast rule and most clutch driven plates are marked "flywheel side". Those that are not marked there is either fitting information included in the packaging or fitting details appear in the repair manual.
Often the recess in the flywheel isn't deep enough to accommodate the cushioned drive hub of the clutch plate and so it is obvious which way around it must be fitted.
If you have the old clutch plate, the side with the most wear is usually the pressure plate or cover side...
well a description of the problem would be a big help
does the gear crash when the clutch is pressed in
can the gears be engaged cleanly when the engine is stopped
did you install a single plate clutch or duel plate clutch
if the gears worked properly before removing the box , then the problem will be in the clutch plate fitting ( wrong way round and the hub is hitting on the flywheel bolts or duel plate on clutch bub is incorrect hitting on the other clutch hub)or the gear shifter installation after fitting the box
this happens because the clutch plate is still spinning with the fly wheel. If you have just replaced the clutch it will be because the clutch plate is in the wrong way and the hub is hitting on the fly wheel bolts. If you haven't touched the clutch so far then you will have to check that the clutch slave cylinder is moving the throw out arm or if the pivot has broken off. IF that is ok then there is a case of the fly wheel and clutch plate contaminated with oil and sticking
together or lastly the lining of the clutch plate has become un secured (broken) and jamming on the flywheel/pressure plate. I am betting on the plate in the wrong way round.
If the clutch is not disengaging when you put your foot on the clutch ( if the system has been bled correctly or cable fitted correctly ) then the problem is that the clutch plate is in the wrong way round and the clutch hub with the springs is hitting on the flywheel bolts
Genewrally speaking you need to remove the gear box. UNdo the bolts holding the clutch pressure plate on the flywheel. . Do this by undoing each bolt a few turns at a time. Remove pressure plate and clutch plate. Clean flywheel face. Remove bearing at center of crankshaft and replace as it will be dry and probably rusty. Fit new clutch plate taking care to observe the correct way the plate is fitted. Normally the raised hub section faces away from the flywheel. THis can be checked by pressing the plate against the flywheel and turning it and it it hits the crank bolts you have it in the wrong way round. Fit the pressure plate over the plate and insert the bolts. Some units have 2 or 4 bolts longer than the restand this is to allow the plate to be depressed a fraction to allow the other bolts to screw in. Place a clutch aligning tool through the clutch plate and into the bearing. Evenly retension the pressure plate bolts going alternately across the cover a bit at a time . When retensioned remove the clutch aligning tool. Remove and replace the throw out bearing on the clutch release forks. Ensure that the clutch kit is all new as mixing parts will not work. Refit the gear box. Basically that is the proceedure but to be exact get the manual for your vehicle to cover any extra steps needed for that vehicle.
The clutch plate can only be fitted one way. If you noticed one side of the plate has a raised section that contains springs. The other side is flat. Puting the plate the wrong way round allows the raised section to hit the heads of the flywheel bolts and this is causing the clutch to spin even though you have the foot on the clutch. Make sure you have properly bled the air from the clutch system. Mostly there is a notice printed on the clutch plate which reads like flywheel side or this side away from flywheel
Unfortunately, it sounds like your pressure plate is going bad. That is the larger part in the following picture. When you depress the clutch pedal it pushes the throw out bearing (the smallest round part) against those center "feelers" and that disconnects the clutch (the next size down round plate) from your engine flywheel.
Normally you would replace all three parts at the same time.
Auto Com Clutch Kit
AUTOCOM ECONOMY CLUTCH KIT -- Includes
Remove the pressure plate mounting bolts from the flywheel.
Remove the pressure plate and clutch disc.
To Install:
Insert a clutch disc alignment tool through the disc splines and into the flywheel pilot bearing.
Pressure plate balance mark location
Install the pressure plate on the flywheel with a gap of 120° or more between the "0" balance marks on the flywheel and pressure plate. Hand tighten the pressure plate mounting bolts.
Tighten the pressure plate mounting bolts using a crisscross pattern 12ft-lb (16Nm).
AUTOCOM ECONOMY CLUTCH KIT -- Includes
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