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edSun May-29-05 12:01 PM

  
"need advive for rear isolasics and swingarm maintenance"


  

          

Greetings, I need advice about my 74 roadster 850 commando. 1) the swingarm does NOT have a grease nipple nor a place for one so that the swingarm can be filled with thick oil. Is the swingarm sealed or is there some other set up on my machine as opposed to say a 71 or 72 commando??? 2)_ Concerning the rear isolastic rubber cover end boots that keep dust & water out of the shims and bushings, the boots are brittle and torn and I want to replace them and I can not get the long rod type boli with threads on rt and left side to come out of frame. Years ago I ruined the threads on such a bolt and had to replace it, Does anyone have a secret as to freeing things up in the rear isolastic bushing tube so I don't destroy the long bolt????? I appreciate any advice that can be given, thanks all,Ed

  

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geo46erSun May-29-05 06:30 PM
Member since Mar 18th 2009
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#1. "RE: need advive for rear isolasics and swingarm ma..."
In response to Reply # 0


  

          

Hi Ed,
I don't know why your swing arm end caps do not have the typical lube fittings, but, it sounds as though your going to be ordering some parts soon, you might just as well order the things you need.
Regarding getting that long bolt out, it sounds as though water has already got in there through those brittle boots and you may have a fight on your hands. You won't be able to use much heat cause everythings inside, you can try to apply some sort of penetrating oil. Screw a nut on the end of the bolt it will help save the threads, but, if you have to really lay into it with a hammer, boots and proper swingarm end caps may not be the only things you'll be ordering.
When all is said and done, reassemble with never-sieze compound smeared on the bolt, it will make life easier next time.

justa thought,
G.B.

G.B.

  

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BrithitSun May-29-05 09:24 PM
Member since Mar 18th 2009
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#2. "RE: need advive for rear isolasics and swingarm ma..."
In response to Reply # 0
Sun May-29-05 09:27 PM by Brithit

  

          

Ed,

Do you know if your model is a MKIIA? That has the MKIII style swingarm. You can't just tell by the airbox or silencers, both could have been changed out long ago. If it does this upgrade, it will have welch plugs on both ends of the swingarm tube, and not have a fitting on the RH endcap. Easiest way to tell is if it is the later MKIII style, the swingarm spindle will have two cotter bolts holding it in place, versus the earlier models having one center bolt holding the swingarm spindle. If that is the case, I would remove the RH welch plug, and R&R the swingarm spindle. Lube everything up and either just replace the welch plug with a new one, or take that new one, and drill it and put some sort of plug or fitting in it to be able to apply the heavy oil in the future. If if is the older style swingarm, you should have a RH cover that is more of a flat disc than a rounded looking welch plug, and has an zerk looking fitting on it. If you have that, slightly loosen the small center bolt head, rotate the disk until the zerk is at the 12 O'clock position, and LIGHTLY tighten the bolt. Don't over tighten, it's really light duty. Remove the fitting. Lean the bike over on its sidestand. Load a pump type oil can with 140 oil, and pump the swingarm full, and before it starts to dribble back out, replace the fitting. It would be best in either case to take the whole thing apart and inspect the condition of things, but you might just need some lube. A parts book or shop manual that would show you the difference between the types of swingarms would aid you as well.

HTH

Don W.

  

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