DMF How can I tell?

[sjwelds]

Just curious guys... What's a fool-proof way to tell if you have a SMF or DMF in your rig?

Bought this truck with 230K +/- on it and slowly been working out the weak links (like n/a condition, lol) and been thinking about this.

Any input is welcome.

 

[Hardy41]

A SMF looks like any other clutch flywheel. But, a DMF has a plate on the front with the clutch spring all in one unit. I will post a pic of a DMF shortly.

 

[sjwelds]

Was hoping to be able to tell w/out dismantling anything. Any special noises a DMF makes or some method like that?

 

[Hardy41]

Well if you shut the truck off and it makes a horrible clunking then it is probably a DMF

 

[79jasper]

With it in neutral, try rotating the pressure plate.
If she moves with the flywheel moving, you have a dual mass.

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