Clutch replacement NV5600

[RVTRKN]

There is a taper to the flywheel, so I'm told. I would replace flywheel and pressure plate as well as the clutch.

 

[Joseph Donnelly]

The factory lathe turns the flywheels and there is about . 002" taper. When resurfacing, especially for South Bend clutches, just blanchard grind it flat. If there are deep hot spots, there still might be chatter issues, however, because the grinding won't remove them completely. South Bend has new flywheels made to OEM quality, as well as steel billet flywheels for racing. Iron has a better coefficient of friction than steel billet.

 

[Bill Lins]

I have a question for y'all- I have a new SB clutch to install in my truck. With 196k miles I figure it's due, even it doesn't slip. Being my service vehicle, downtime is of great concern. Is the flywheel balanced to the particular engine on which it is installed or are they all the same?

A friend of mine has a flywheel that I could go ahead & have ground so that it'll be ready to install when we tear the truck down. Will this work or do I have to reuse the flywheel that's already on the truck?

 

[Prairie Dog]

No, flywheels aren't balanced as a set to a particular eng.

 

[Bill Lins]

Thanks! That's what I needed to know.

 

[NIsaacs]

Make sure they are both 13"



Nick

 

[Bill Lins]

Thanks for the advice!

 

[Jbremount]

I know this tread is getting old, but I need a little advise along these lines. My clutch is holding fine but the throwout bearing is beginning to make a whining noise. I also can see ball bearing(probably from the throwout bearing.. laying on the bottom) when looking under the truck. I want to take the transmission apart and see whats going on as I have a transmission jack. I may only need a throwout bearing and not a costly full clutch replacement. Is there a DIY or good post I can read on how to do this.

 

[GCroyle]

http://www.youtube.com/watch?v=btI6YkbT8y4

 

[jelag]

Like Joe mentioned above... we always ground the flywheel flat... and had problems with a competitor in town who would turn them.... and their lathe bit would chatter on the hot spots... always grind.... than as the people who have ground the flywheel to turn it 90* on the grinder and sweep the surface with a dial indicator with the table turning... and look for run out of less than .002" Often the fixture that mounts the flywheel to the table will get dinged and the flywheel won't sit flat.... if the ground surface and crank surface aren't parallel the clutch might not release.....

And I always suggested to the customer they consider removing the needle roller pilot bearing and boring the flywheel and inserting a sealed ball bearing.... we charged a nominal fee ($50) for that service but it prevented a lot of issues down the road with failed input shafts from damaged pilot bearings... it was my conclusion that most failed pilot bearing were from them riding on an already damaged input shaft.... or dirt contamination from installation... where the sealed roller bearing can be installed against a surface not damaged by the old pilot bearing and there is no chance of dirt entering the bearing at installation of the transmission....

 

[jhenderson]

The main concern with the flywheel is that it be ground not turned. Ground mine flat over 200,000 miles ago with no problems.