Help w swinging arm bushings 73 850 commando

Status
Not open for further replies.
Joined
Mar 9, 2016
Messages
1
Hello to whoever can help. I am trying to get the swingarm off my 73 Commando without disturbing the primary. I removed the 1/4-28 screw in the middle of the swingarm pivot tube. I am looking at the right side and can see the "O"Ring and the 1/2-20 female threads. Am I now ready to pull it out with the "Bolt Socket and Nut" technique? It really seems stuck and I am hesitant to put more pressure on it until I know there is nothing else to remove before pulling harder. Is there something I am missing? It is now soaking in penetrating oil that I sprayed in the right side and also down the hole in the center hole. (1/4-28)
After I get the swing arm off, can I remove the entire Motor, Trans and Prymary as one unit? I know that this all works good together. It was in a running bike. I am taking that entire power train and installing it into a 73 frame that is straight and already powdercoated. The new frame also has a separate podercoated swingarm to match. I will need to re-bush and install that. Thanks in advance for any info that will help me get back on track. <END>WAZZZ
 
There's nothing else holding the spindle in. It should just pull out. If it's got corrosion holding it in, it could take a lot of force to get it out, but you should be able to do it with the technique you are using. Your only other option is to pull the primary, and then drive it out from either side with a large punch and heavy hammer. Better to pull it out with the bolt technique.

Ken
 
You might need a slide hammer with the proper-threaded bolt fastened to the end to jar the spindle loose.

It may be possible to remove the whole power unit without removing individual parts, but it may be easier to break it down to individual components. The head steady and front iso would have to be removed completely and the whole deal slid forward enough for the rear iso to clear the frame, removing towards the primary side. The primary itself may prevent you from gaining enough clearance to do so.
 
I have swapped engines between bikes with swing arm and wheel in place. You do not need to remove it. The whole engine, gearbox, swing arm is all one assembly. It is an Isolastic Norton.
 
Status
Not open for further replies.
Back
Top