smart_fortwo_shifting_actuator_fix¶

2 excerpts.

Excerpt¶

youtube.com/performance_autohaus/smart_fortwo_shifting_actuator_fix · p. 1 · Applies to: 450, 451, 452, 453, 454, #1, ebike

smart 4-2 451 if your vehicle makes these sounds when you're putting it into gear right there you hear that slams slams into gear so I'm going to show you how to fix that so at the rear of the car what you're gonna want is in an E10 it's a basically reverse Torx size 10. you're going to get under here and this is your clutch actuator it's basically your clutch pedal there's a bolt here it's bolt over here and there's another one on the back over here I'm going to show you there's your last one right there in the middle of the screen so you're going to want to remove those three and remove this electrical connector with the purple and red this fat boy it's going to have tabs on both sides you're going to want to push it here and push it on the back end at the same time and lift up on it so you're going to remove this plus the three bolts and in doing so that will allow you to drop the clutch actuator it's not under much pressure or anything like that you can ignore that current positioning that doesn't really matter because you're going to set it in the middle and then relearn it no problem I'm going to show you how once you pulled it out it should look something like this first thing we're going to do is give it a quick clean so it's a nice so it will be a much nicer much nicer surface and part to work with so the next step is to take a Torx T20 and remove six screws so it's going to be one two three four five and six over here once you do that you'll be able to take off this plastic cover on the back let me show you how as you can see all six screws are identical at this point you'll be able to remove this black plastic cover here it comes off quite easy it's a little bit of plastic shards and that's from this area because what's happening is as you can see is from the factory comes with this white grease pretty thick good stuff right but it gets eaten away see there's no grease on the gears anymore just a little bit stuck here up against the aluminum wall and the gears are completely grease free and what happens is it's trying to move this piston here to press the clutch in and because there's so much friction due to this not being lubricated anymore the motor here has to keep applying more and more torque to try to move it and it keeps applying it and if you know anything about physics to try and move something is you're going to keep applying Force until it starts moving and as I'm constantly increasing force on this ratchet here for example I'm constantly increasing the torque more and more and more until it overcomes the friction of the table same thing here the motor is constantly increasing torque it's holding holding holding and then it just breaks because it overcomes the friction and then it starts to move and that's what that kick is because the clutch cannot move smoothly back and forth what what's happening is it's not able to apply the clutch smoothly once you put it into reverse or into drive or whatnot it can't apply the clutch smoothly so it just forces it in and that forces the gears to go in and out of position so what we're going to do is we're going to shove this full of grease and then put everything back together now as you can see it's completely packed full of grease I forced it basically I put the tube at the Joint here and I forced the grease down into there all throughout then over here I packed it in using a screwdriver at this point I'm going to go ahead and put the cap back on screw everything down not too tight as you can see the type of screw it's only about four foot pounds I don't know four newton meters somewhere not very much I'm gonna screw this tight I'm gonna put it back on the car there everything's back on it's not too tight here's a fun fact not only does this most of the time fix your clunk when you put it into driver reverse but a lot of the times nine times out of ten this is also why your vehicle when you put it into driving you let off the brake it accelerates very fast same problem here is it's got to constantly apply the force and same thing as removing Force because of the friction there the clutch moves too fast so it'll accelerate fast you press the brake instead of accelerating normally slowly it accelerate really fast right off the line a lot of times this fixes it so everything's done much cleaner let's get it back on the car so what we've done now is I've just put all three screws on finger tight but with enough space where you can slide it and the position you're going to lock it in is you're going to lock it right at about the middle you don't want it all the way out you don't want it all the way in push it all the way in until where it stops and go out halfway and that's where you want to tighten the bolts down you want to tighten the two bottom ones first and then the one on the side so bottom two first and then the one on the side there I got this one on as you can see

Excerpt¶

youtube.com/performance_autohaus/smart_fortwo_shifting_actuator_fix · p. 2 · Applies to: 450, 451, 452, 453, 454, #1, ebike

it's tightened at about the halfway point it doesn't have to be exactly right there just roughly halfway and the reason for that is you want this to have a little bit of preload but not much there's a spring in there it will relearn its new position and make sure you got the electrical connector hooked up and at this point Let's test so same thing let's go ahead and start it I'm currently on ramp so I'm going to roll off the ramps here breakdown get off these ramps anyway so here we are we're outside so put it into drive nothing very small click nothing nothing the car's running let me open the window so you can hear it Ronnie nothing now let me go on to a flat surface and show you just how slowly this thing accelerates now that the acceleration has been fixed so release the pedal it's already nice and slow stop release the paddle accelerating nice and slow back into reverse a very slight click and that's it so that fixes the problem and part this thing what what's going on is the actuator has too much friction it can't move freely put it back to your right nice and quiet so the actuator it's not moving freely and perfect it's just having issues it it can't move around and gets stuck and this simple fix costs like two dollars for some grease you probably have some grease just lying around at home and your car is fixed you have no more you have no more shifting issues you have no more hard acceleration issues upon letting go of the brake it fixes the shifting fixes the braking no more clunks so no more hard use on your transmission and this cost about two dollars that's about it either way I hope you learned something today I seriously hope this helped you out and you didn't have to go out and buy a transmission you didn't have to buy a clutch actuator you didn't have to spend any money on that just 20 minutes of your time two dollars in grease and you're good to go I hope you learned something today have a nice day