Tight crank shaft nut
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wrote on 3 Jul 2016, 13:50 last edited by
So I'm doing my first engine rebuild and I'm stuck at undoing be crankshaft nut, I cannot get it to move, is it supposed to be extremely tight? The one on the other side wasn't anywhere near as tight.
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So I'm doing my first engine rebuild and I'm stuck at undoing be crankshaft nut, I cannot get it to move, is it supposed to be extremely tight? The one on the other side wasn't anywhere near as tight.
wrote on 3 Jul 2016, 17:24 last edited by@LJK_hunter The othet side has a tab washer to stop it coming undone. The flywheel nut should be tightened to 60nm approx. Although it's possible that it's has tightened due to the reciprocating mass of the wheel.
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wrote on 3 Jul 2016, 18:25 last edited by
There wasn't a tab washer on either side but this is the side that's tight.
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wrote on 3 Jul 2016, 18:32 last edited by
Fair enough, just checked my engine builds that is correct F
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wrote on 3 Jul 2016, 21:42 last edited by
Breaker bar should do it no problem.. I found it easier to break those nuts by putting the engine back in the frame temporarily.
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wrote on 3 Jul 2016, 23:55 last edited by
Put the clutch basket back on and wedge a piece of hard plastic between the gears, i use a small lump of nylon, then it should come undone with a breaker bar.
Or cheat and use an air rattler/windygun. -
wrote on 4 Jul 2016, 08:55 last edited by
I Was doing a full rebuild so it was bar in small end eye and two blocks of wood as to not damage the crankcases. But any of the other methods will do it.
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wrote on 4 Jul 2016, 20:33 last edited by
Got the nut off now, used
@MIGHTYMAN 's advice and put the engine back in the frame. Thanks guys
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I Was doing a full rebuild so it was bar in small end eye and two blocks of wood as to not damage the crankcases. But any of the other methods will do it.
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wrote on 16 Aug 2016, 01:05 last edited by
I ended up using a bit of alluminium between the gears and an impact gun on the nut. A bit pikey but it did it