Jan_280Z Posted January 25, 2013 Report Share Posted January 25, 2013 Hey lads My brother's clutch gave out in his 620 (started slipping rather badly). We got everything off but can't for the lift of us get the flywheel off. There's no issues - no scaring, scratches etc. - on the thing, maybe a tad of a glaze if anything. Is it required that i machine it or is there something I can do with it on the car? Thanks Jan Quote Link to comment
datzenmike Posted January 25, 2013 Report Share Posted January 25, 2013 As long as it is level and smooth you can use 400 grit sand paper on a flat piece of wood and go over the friction surface with a circular motion to take the glaze off. Quote Link to comment
ggzilla Posted January 25, 2013 Report Share Posted January 25, 2013 It is not indicated to resurface the flywheel UNLESS cracks appear, or it is not flat (worn unevenly), or the surface is burnt (heavy glazing). Guys will tell you "it is cheap insurance" to machine the flywheel regardless, but that's not what the Datsun factory service manual says. To remove the flywheel remove all 5 or 6 bolts then carefully pry it from both sides. Rock it off the end of the crankshaft. Quote Link to comment
metalmonkey47 Posted January 25, 2013 Report Share Posted January 25, 2013 Personally, I'd pull it and get it turned. i wish I did the last two times I had my clutch off, but I didn't. And I am about 90% sure it's why my last clutch went to shit, as well as my current one (warped) Quote Link to comment
ggzilla Posted January 25, 2013 Report Share Posted January 25, 2013 Yes, you should turn the flywheel if it is not in good shape!!! Quote Link to comment
Skib Posted January 25, 2013 Report Share Posted January 25, 2013 you can undo them with the engine in the car by hand but itl be a bitch. they are torqued on there good. your best bet is an impact. Quote Link to comment
flatcat19 Posted January 25, 2013 Report Share Posted January 25, 2013 Run a straight edge on it. If good, and you have use of an air die grinder, hit it with a green Roloc pad. If it needs to be removed, the use of a big soft dead blow will work wonders. Quote Link to comment
Jan_280Z Posted January 25, 2013 Author Report Share Posted January 25, 2013 It looks rather straight and flat. I'll put a straight edge on it later today and let you all know. I don't have a impact wrench and no matter how much I tried I couldn't get the bolts loose. I used a breaker bar on it and nothing. Thanks Jan Quote Link to comment
banzai510(hainz) Posted January 25, 2013 Report Share Posted January 25, 2013 Danial C has a photo of a bar he made to get the flyoff I copied his design. Quote Link to comment
Jan_280Z Posted January 25, 2013 Author Report Share Posted January 25, 2013 Gentlemen one more question Do any of you know where one could acquire something to pull the pilot bushing out? The one in there isn't too bad but since the clutch kit came with a new one I'd figure I'd throw it in there while everything was nice and off. Thanks Jan Quote Link to comment
datzenmike Posted January 25, 2013 Report Share Posted January 25, 2013 Get a screwdriver and hammer. Slit the pilot bearing lengthwise in 3 places and fish out the pieces. Takes less than a minute. I figured this out in '72 OR Get a wooded dowel that fits the pilot bearing hole. Fill hole with grease (here I recommend soft bar soap, it's less messy) and pound the dowel in. The pilot will be forced out by hydraulic pressure. Takes 1/2 hour and gas to go into town for a wooden dowel. Wife wants to know where the soap went. OR Get a pilot bushing puller. $20 plus trip into town. Need a slide hammer to make this work. Use once never, have to use again. Quote Link to comment
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