Clutch Pivot Plate Bolt Torque

[Fibersnake]

Okay,

I am putting my stock clutch back together and have a questions and can not seem to find it in the search or the manual. On the Pivot plate that is held on by the 4 bolts (5/16 X 18 X 2") capcrews apProx, it is the plate presses down on the diaphrame spring to the pressure plate, what are the torque of these bolts? If not torque how much do you tighten in down to get the diaprame spring to the proper pressure?

Anyone that has messed with a stock clutch and had it apart, any suggetion would be greatly appreciated. May not be a big thing, but it woudl seem that there should be some sort of torque or measurement to insure that the proper pressure is being applied to the diaphrame against the pressure plate.

Thanks in advance.

 

[Gas Man]

I have just used loctite and "good n tite"

Be sure to have your ball ramp spun away when doing so.

 

[Fibersnake]

I have just used loctite and "good n tite"

Be sure to have your ball ramp spun away when doing so.

Not sure what you mean by ball ramp unless you are talking about the one the clutch accuator (where the cable hooks up)! These are the four bolts that hold the pressure plate and diaphrame spring to the clutch pack. Not sure but would imagine there is some type of adjustment in order to set the proper pressure to the plates. Basically much like with spring on the Bandit type but this is for the diaphrame spring.

Other than that, though you may be right, just good and tight, but trying to find the right adjustment.

Thanks

 

[Fibersnake]

Thank I got it figured out (we will see), re-read manual and it says that the diaphrame spring should be with .020-.048" from flat when properly tighten down. Guess it is time to get out the dial indicator!!

Anyone done this before????

Thanks

 

[Rottie]

Fiber, I had mine apart last Saturday. On the 07s it doesn't look like theres is any adjustment... The bolt's where tightened down when I open it up. Sure there is a tourqe for it, but no caliabration for it!

 

[V]

Was wondering the same thing? Don't I need to remove this to get to the larger clutch nut that has come loose on some bikes? It appears the nut is behind the throw out bearing. Haven't pulled it appart yet just looking in the manual so far

 

[Rottie]

V, remember if your bike is not up right on a stand, that your clutch plates will fall out! Get the gasket to seal back up is a bitch, use some vasolin on it to get it to stay in place!

 

[V]

V, remember if your bike is not up right on a stand, that your clutch plates will fall out! Get the gasket to seal back up is a bitch, use some vasolin on it to get it to stay in place!

Thanks for the tip. I have pulled the cover on my 05 just never pulled the clutch nut. Will use a bike lift:2thumbs:

V

 

[Fibersnake]

Was wondering the same thing? Don't I need to remove this to get to the larger clutch nut that has come loose on some bikes? It appears the nut is behind the throw out bearing. Haven't pulled it appart yet just looking in the manual so far

In order to get to the clutch nut (at least on the 2005 Mastiff and pretty sure on all the other 05 and ups), you have to remove the 4 bolts that hold the pivot plate and than the diaphragme spring. That torque for those 4 bolts is what is was looking into.

Since then I found in a Baker Installation for the Street Performance Clutch (which our seems to be or model after), that with the pivot plate torque evenly, using a x cross pattern to 200" pounds of torque, that the diaphragm spring should have a measurement of between .020 and .040" from flat, anything beyond .068" is considered out of tolerance and need to check to see on replacement of pressure plate. clutch plates, etc.

When I torque mine down to 200" pounds on the four 5/16 X 18 x 2" pivot bolts, the measurement I got on the diaphragm was .032" from being flat. This is on a clutch with 18k on it. Shifted fine and in fact better than a long time with good engagments, no signs of slipping, etc. Also I put ATF in for the primary as per Baker suggestions and it seemed much better.

Still researching to see if I will stick with the ATF or go back to good ole Revtec.

If anyone from puppy farm or others with more knowledge could pipe in and provides more details it would be very much appreciated.

Hope my research helps some, but bottom line, is to get to the clutch nut to check for tightness, you will have to remove the diaphragm plate and reassemble same. There is a measurement on that in regards to flatness to make sure that the proper spring pressure is being applied to the clutch plates.

DV or anyone else have more info.

 

[Fibersnake]

Also in the Clutch Cable Poll thread, I replied with some more info and a link to Baker were it discussed the torque and adjsutment for the diaphragm springs.

http://www.bigdogbiker.com/forums/technical/7070-clutch-cable-poll.html

 

[Fibersnake]

V, remember if your bike is not up right on a stand, that your clutch plates will fall out! Get the gasket to seal back up is a bitch, use some vasolin on it to get it to stay in place!

Is the newer covers using a regualr gasket or an O-Ring? My Primary and isnpection covers have the O-ring and once I set them in the groove, never had a problem keeping them in place. So far been luck on not having any leaks either, but heard that they changed to a regular flat Gasket, is this the case?

Thanks

 

[Rottie]

Oring on the case it's self and a flat gasket on the inspection! Not fun!!!

 

[Fibersnake]

Oring! Not fun!!!

Can not say that I have had much problems myself, but could be a problem if they feel out will reassembling. Never would hurt with the Vasoline, good suggestion.

Thanks

 

[Rottie]

I will be taking mine apart this week and trying to get it to seal! I'm to the point of going with the Karata, and calling it a day!!!

 

[V]

Never had a problem with the O rings but never say never

 

[BWG56]

Fiber, my 07 manual calls for 20ft/lb and #2760 loctite for the pivot plate screws (5/16-18 x 2").

 

[Fibersnake]

Fiber, my 07 manual calls for 20ft/lb and #2760 loctite for the pivot plate screws (5/16-18 x 2").

Very good info, my 05 SM had no torque listed but did give the height for the diaphragm. Between that and the Baker info, seemed to got it nailed down.

Oh by chance does your 07 have 9 plates of like the 05 12? I know they changed them sometime but not sure which year. Do not know how much of a difference it would make but if so, would imagine only slightly. I know for mine I torque to 200" pounds but also check the dome height of the diaphragm spring and it was dead on.

Used Red Loctite on the bolts, not sure what number though, but it will hold for sure.

 

[05chop]

Okay,

I am putting my stock clutch back together and have a questions and can not seem to find it in the search or the manual. On the Pivot plate that is held on by the 4 bolts (5/16 X 18 X 2") capcrews apProx, it is the plate presses down on the diaphrame spring to the pressure plate, what are the torque of these bolts? If not torque how much do you tighten in down to get the diaprame spring to the proper pressure?

Anyone that has messed with a stock clutch and had it apart, any suggetion would be greatly appreciated. May not be a big thing, but it woudl seem that there should be some sort of torque or measurement to insure that the proper pressure is being applied to the diaphrame against the pressure plate.

Thanks in advance.

Standard torque on grade five or eight bolts SAE Bolt Torque Specs as far as the red lock tite i prefer blue.i removed some grade five bolts with red lock tite and had to drill out the bolts.i only use red if i have tne reason is when using red loctite i have always had to use alot of heat to break it loose.the smaller the bolt the easyer it breaks off when using red locktite.I used the gasket for the inspection cover also.

 

[EJ]

I put red loctite on my mirrors and just about rung the bolts off trying to tighten them up to no avail. They still vibrate loose under hard accel. Going to try and find some stronger stuff or weld the bastards on there.:angry:

 

[BWG56]

Oh by chance does your 07 have 9 plates of like the 05 12? I know they changed them sometime but not sure which year. Do not know how much of a difference it would make but if so, would imagine only slightly. I know for mine I torque to 200" pounds but also check the dome height of the diaphragm spring and it was dead on.

Last week I did the the trans, engine and primary oils and didn't check the clutch nut. I didn't realize the nut was behind the pivot plate, this thread kinda pointed that out to me. So today I picked up another quart of primary oil and inspection gasket so I will be back in there tomorrow to check the clutch nut and I will count the plates and let you know.

I purchased my Dog last April and only found out about this forum a couple weeks ago. This website should be in your paperwork when you purchase a Big Dog, it has been very informative to me in the short time I've been here.

Keep up the good info