Harley Twin Cam Crankcase Plug

[Jack Klarich]

http://images.imagessite.com/OEM_IMAGES/hd_mc_images/HD07FXD005.gif Number 1 in this picture is the crankcase plug many try to remove to drain the crank case, this plug if installed incorrectly can crack the crankcase

 

[mlemay]

How can it be installed incorrectly?

 

[STEVE07]

How can it be installed incorrectly?

It is a tapered plug much like a pipe fitting. Used at the factory during the manufacturing process. It isn't meant to be removed and if you do then reinstall it and over tighten it the case will crack.

 

[dbmg]

It is a tapered plug much like a pipe fitting. Used at the factory during the manufacturing process. It isn't meant to be removed and if you do then reinstall it and over tighten it the case will crack.

I had a similar situation with a mower. Failed to read owners manual of how to change oil properly and removed plug. Hardly tighten and heard a crack and guess what case split. Thankfully JB Weld was able to fill and fix crack.

 

[mlemay]

I see it in a diagram in my service manual, but don't see a torque spec. for it anywhere. Maybe it's a secret so the MOCO can sell more crank cases?:eam

 

[Fisherking]

Is this the plug that is removed when you are putting in an in dash oil temp gage , for the sending unit?

Thanks F.K.

 

[stray dog]

Is this the plug that is removed when you are putting in an in dash oil temp gage , for the sending unit?

Thanks F.K.

No it is not.
See post #2 from Steve.

 

[Fisherking]

No it is not.
See post #2 from Steve.

Ok on baggers were does the sending unit go for the indash oil temp gage?
Thanks F.K.

 

[tourbox]

There is a plug in the oil pan next to the drain plug. I believe it goes there.
tourbox

 

[Jack Klarich]

# 16 in oil pan can be used for oil gauge