Crank bolt tightness importance
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From: new england
Crank bolt tightness importance Since crankshaft is not keyed for oil pump and balancer, it is very important balancer be installed all the way against oil pump. Its this pressure from balancer that forces oil pump to turn with crank shaft, so torque of 240 ft, lbs on used bolt is very critical or you could lose oil pressure! Just a heads up. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Re: Crank bolt tightness importance the oil pump drive/crank sprocket for the timing chain is one in the same piece. It is indeed keyed to the crank.
But, yes the torque on the bolt is important. The bolt keeps the damper spinning w/ the crank for the accesory drive
<small>[ March 27, 2002, 07:55 PM: Message edited by: y2khawk ]</small>
But, yes the torque on the bolt is important. The bolt keeps the damper spinning w/ the crank for the accesory drive
<small>[ March 27, 2002, 07:55 PM: Message edited by: y2khawk ]</small>
Thread Starter
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From: new england
Re: Crank bolt tightness importance </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by y2khawk:
<strong>the oil pump drive/crank sprocket for the timing chain is one in the same piece. It is indeed keyed to the crank.
But, yes the torque on the bolt is important. The bolt keeps the damper spinning w/ the crank for the accesory drive</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Thanks for the correction, i havent been in there yet but i know of other GM motors that use the principal i brought up. NASTY C5, GM does give a torque rating for reusing crank bolt seperately from new bolt torque procedure, so i assume you can go either route.
<strong>the oil pump drive/crank sprocket for the timing chain is one in the same piece. It is indeed keyed to the crank.
But, yes the torque on the bolt is important. The bolt keeps the damper spinning w/ the crank for the accesory drive</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Thanks for the correction, i havent been in there yet but i know of other GM motors that use the principal i brought up. NASTY C5, GM does give a torque rating for reusing crank bolt seperately from new bolt torque procedure, so i assume you can go either route.
