SuzukiSavage.com - How to loosen rotor bolt? RH or LH threads?

verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28884 L.A. California Gender:	Re: How to loosen rotor bolt? Reply #15 - 06/20/12 at 22:32:18 justin_o_guy2 wrote on 06/20/12 at 22:21:39: But doesnt the shaft rotate CCW? Yes, same as... Quote: old Mopars had reverse threads on the driver side wheels and old VW's
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WD Serious Thumper 2005 No Login Offline Professional "scooter trash". Posts: 5207 Rosemark TN Gender:	Re: How to loosen rotor bolt? Reply #16 - 06/20/12 at 22:44:29 Come to think of it, so does one of my boat trailers, so old it also has a transverse leaf spring...
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justin_o_guy2

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Re: How to loosen rotor bolt?
Reply #17 - 06/21/12 at 06:23:33

I am suddenly having a problem, I cant for the life of me grasp WHY on a CCW rotating shaft there would be left hand threads.,
& I dont remember the LH lugs on the drivers side, cuz, that doesnt make sense to me, Passenger side does,.because IF you held the lug And rotated the tire ( to go forward), then, the lug would loosen if it was RH thread.,
A CCW rotating shaft would tighten RH threads.

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BuckRYCA

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Re: How to loosen rotor bolt?
Reply #18 - 06/21/12 at 06:54:29

Updated status on my problem of removing rotor bolt -- Now I've tried removing it by rotating it clockwise. I'm holding onto the flats of the rotor with a monster 36mm wrench and trying to rotate the 17mm rotor bolt with various tools. Nothing is working, so far. I've started applying heat with a propane torch. My electric impact wrench has not loosened it. I will recruit an assistant and will start trying cheater bars and more heat cycles. Crazy.

I do understand that I should not use hammering as I would be hammering on the main crankcase bearings. Radial hammering on a cheater bar or wrench would be OK I think, but no hammering on the head of the bolt in the direction of the main axis of the crankshaft as that would impact the bearings.

I bought a 2001 Savage with 3K miles on it for $1500 and will swap that engine into my Ryca chassis to get it back on the road.

The 1996 Savage/Ryca engine I am working on now will eventually go into the 2001 Savage chassis assuming I can do the repair. The engine has 22K miles on it and is a boat anchor unless the mainshaft is replaced. Pulley splines are gone. I've got little to lose. I'm looking at this as a learning experience.

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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: How to loosen rotor bolt? Reply #19 - 06/21/12 at 07:09:32 WHOA,, Put it together & take the socket to some place where they have a compressor & impact. & dont guess at which way to turn it. Put 2 eyes on a book.
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BuckRYCA

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Re: How to loosen rotor bolt?
Reply #20 - 06/21/12 at 07:25:20

I've got a Clymer's manual. It does not explicitly state that the rotor bolt has left-handed (LH) thread. So, the default would be right-handed (RH) threads.

However, on this site the rotor bolt is referenced as one of three LH fasteners on this bike. This is supposed to have been verified by at least two Forum members.
Lefty Threads...
http://suzukisavage.com/cgi-bin/YaBB.pl?num=1299521066

I don't have the Suzuki Service Manual(SSM) yet -- I think I should buy one. In the meantime, would someone who owns a SSM verify that the 17mm rotor bolt in the center of the rotor, p. 244, figure 13 in Clymers, is actually a left-handed thread bolt?

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RidgeRunner13 Serious Thumper Offline haulin' the groceries! Posts: 649 Mustang Island, Texas Gender:	Re: How to loosen rotor bolt? Reply #21 - 06/21/12 at 07:25:25 From my SSM: Primary Drive Gear- Hold rotor w/ 36mm wrench - torque=65-79.5 lb-ft NOTE: This nut has left-hand thread. Turn it counter-clockwise when tightening. No mention of any threadlocker being used. HTH.
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BuckRYCA

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Re: How to loosen rotor bolt?
Reply #22 - 06/21/12 at 07:31:18

Agree, the primary drive gear nut (on the right side of the engine) uses LH threads. Clymers, p. 131 states CAUTION: The primary drive gear nut has left-hand threads.

But I'm not talking about the primary drive gear nut. I'm talking about the rotor bolt. On the left side of the engine. The bolt behind the circular inspection cover on the left hand engine case you rotate to get TDC during a valve adjustment.

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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: How to loosen rotor bolt? Reply #23 - 06/21/12 at 07:38:54 Since it turns CCW in use, it would not make sense for it to be LH thread. Each power pulse of the motor would be trying to make it vibrate loose.
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BuckRYCA Senior Member Offline Posts: 258 New London, CT, USA Gender:	Re: How to loosen rotor bolt? Reply #24 - 06/21/12 at 07:41:35 I would appreciate hearing from someone who has actually loosened the rotor bolt. Thanks!
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Serowbot

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OK.... so what's the
speed of dark?

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Re: How to loosen rotor bolt?
Reply #25 - 06/21/12 at 07:56:03

Buck... FYI,.. I made the list from what other members said they had experienced... I haven't pulled the rotor nutt myself...
Hope I didn't advise you wrong,... but, it looks like maybe I did...

When you do,.. hopefully get the nut loose, I'll be watching and make any corrections needed to the post...
Best luck... Sorry again,

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BuckRYCA Senior Member Offline Posts: 258 New London, CT, USA Gender:	Re: How to loosen rotor bolt? Reply #26 - 06/21/12 at 11:25:01 Ok, I ordered the Suzuki Service Manual for this bike (only $10 for a CD on eBay). I'm not doing anything else on that bolt until I read it.
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lch2

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Re: How to loosen rotor bolt?
Reply #27 - 06/21/12 at 13:21:23

BuckRYCA wrote on 06/21/12 at 07:41:35:

I would appreciate hearing from someone who has actually loosened the rotor bolt. Thanks!

I did removed that one when replacing my starter clutch, it is a bitc.....h to loosen.

The Big one (I think 36mm) on the rotor is meant to use with a removal tool that the vast majority of us do not have, I removed the 17mm from the center, and then keep on the electric impact wrench on the 36mm, did not turn one inch, but eventually the vibration get it loose, it is not an screw or bolt, it just meant for the removal tool to clamp there.

After the vibration got it loose, I was able to pull it about 1/4 to 1/2 inch out, then it was stuck, after viewing it more deeply, I saw that it was being held by the "key in the keyway" (sorry, don't know the appropriate word), it took some wiggle to get it aligned and it came out eventually.

The point here is don't try to turn the 36mm, as it will not turn, remove the 17mm and then apply vibrating power to the 36mm, and it will come loose after a while.

Good luck, as this requires some of that Wink

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BuckRYCA Senior Member Offline Posts: 258 New London, CT, USA Gender:	Re: How to loosen rotor bolt? RH or LH threads? Reply #28 - 06/21/12 at 13:33:12 I can hardly stand the suspense! Which way did you turn 'the 17mm from the center' to loosen it? Clockwise or Counter-clockwise?
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lch2 Junior Member Offline SuzukiSavage.com Rocks! Posts: 63	Re: How to loosen rotor bolt? RH or LH threads? Reply #29 - 06/21/12 at 13:58:08 BuckRYCA wrote on 06/21/12 at 13:33:12: I can hardly stand the suspense! Which way did you turn 'the 17mm from the center' to loosen it? Clockwise or Counter-clockwise? Not 100% sure because I did it like two months ago, but I'm very confident it will loosen CCW
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