Engine/gearbox craddle isolastic bolt removal? (2010)

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interstateOz

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hi there, just wondering if anyone knows is there a trick to removing the bolts that connect the gearbox/engine cradle to the frame? its the big rear isolastic bolt, the bolt spins but its like the rubbers are stuck to it from the inside, in the manual it says that pre 70 were extremely hard to remove and im wondering is there some kinda press tool to use or technique any one knows of ????

Engine/gearbox craddle isolastic bolt removal? (2010)
 
Extremely hard to remove is somewhat of an understatment.

I pulled mine down a couple of weeks ago, rip off the rubber boots, cut the shafts off with a grinder or hacksaw as close as you can and drive through the shortest end of the bolt with a punch.

Do not use heat, the rubber will melt and make it even more difficult, WD40 or Lanox will help nicely.

All my photos, enjoy: http://s113.photobucket.com/albums/n229 ... 0Commando/

Josh, Cairns, 0428 241 105
Engine/gearbox craddle isolastic bolt removal? (2010)

Engine/gearbox craddle isolastic bolt removal? (2010)

Engine/gearbox craddle isolastic bolt removal? (2010)
 
On one project I had to hacksaw the stud between the frame and the gearbox cradle on both sides to get the cradle out, be careful not to cut into the frame itself, the isolastic end bosses will be replaced anyway when you get a new isolastic kit (later adjustable type normally). Once the cradle is off the frame the remains of the stud and all of the rubber bits will come out with some vigorous bashing.
 
Thanks heaps boys, just thought I'd ask cause I havnt had time to check can u get new isolastic bolts when u get new rubbers/upgrade if I cut them?
 
Norvill sell whole new, upgrade kits.

Isolastics kits are part number 066130A and 066131A.
 
Great, thanks Josh, can I ask what model/year is ur beast ur working on? Wish u were a bit closer here in Aus. were at opposite ends!
 
Hey Josh I had a look at the norvil upgrade it doesn't come with a bolt and I can only find a front isolastic bolt listed on there, what one did u get?
 
You will have to buy the through-stud as a separate item. I have also found that I had to buy the dust covers and the PTFE isolastic washer separately the last time I bought a kit from Norvil (over a year ago), however they may well be selling more comprehensive kits now. The stud is listed in the isolastic section under 'Stud - isolastic centre 1/2' it is part number 062442 GBP 3.23 or 19.80 for the Stainless version. The front is actually a bolt and not a stud hence it's description in the catalogue.
 
Josh, It depends what you order from them, I see that for the front they have a complete isolastic mount to convert to vernier type for GBP 91, a complete isolastic conversion kit with washers, dust covers and even the g/box carrier end plates for GBP 70ish and a basic kit with no washers or dust covers or end plates for GBP 46. They also have the MK3 type in all 3 versions. The difference between the conversion kit and the MK3 type is that the MK 3 front mount was physically narrower and you will see from the photos that the side pieces are longer and more conical in shape than the conversion ones. If you fit a MK 3 isolastic kit into a pre MK 3 front mount it will not fit in the frame. I usually find that I can reuse the end plates and often the washers, so I tend to buy the basic kit and those additional components as necessary.
 
hey this might sound silly but can u guys explain the difference between what the 'vernier' type is compared to the other 2 types they offer, what the diference between the 3 types as the description on norvil dont really state it all?
 
Interstate OZ, The original isolastics required you to measure clearance with a feeler blade, then dismantle the whole assembly and then remove or replace shims as required to get the desired clearance, then reassemble and re-measure. This was obviously difficult from a service point of view so they finally made the isolastics adjustable with a collar that screws in and out on an external tube through which the mounting bolt and mounting stud (depending on front or rear) attach the unit to the frame. This adjusting collar is described as a vernier type adjuster. This 'vernier type' and the MK 3 are both 'vernier types' and identical in all aspects, except for the length and more conical shape of the adjusting collar on the front MK 3 version, which will not fit a pre-Mk 3 mount without modification to the mount or the collar (have a look at the photos on the Norvil site under 'Isolastics). If your machine is not currently a MK3 and you wish to upgrade to the new style of adjusters (I do recommend this by the way) then you need to get the isolastic conversion kit in whichever of the 3 options suit you, going from basic to all replacement parts, to the complete assembly.
 
Hey Dave, can i ask if u know, why is the oldbritts isolastic kit $218 for the rear and $189 for the front, his seems heaps more than norvil im wondering if theres more to there kits or are they just dearer?

Thanks for the help out :)
 
Oz, I beleive all of the isolastic kits probably come from the same source ie, Andover Norton. A lot of our American friends in the classic bike business had to buy their stock when the US$/Pound exchange rate was very unfavourable not so long ago, additionally there is shipping on top and they also have to make a profit. Many of them now find they are stuck with parts that are much more expensive than what anyone can buy them for using mail-order from the UK. I feel sorry for their predicament, after all what can they do; sell the parts at a loss in order to compete with those abroad? Hopefully those enthusiasts based in the US will still give their local suppliers the business where they consider it as a resource that they don't want to loose. For us abroad however we are better off buying our parts direct from source.
 
dave M said:
I beleive all of the isolastic kits probably come from the same source ie, Andover Norton.
Click to expand...


The vernier Isolastic kits were never offered as a "factory" upgrade as far as I'm aware.

The vernier kits originated from various Norton parts suppliers such as Norvil Motorcycles and Mick Hemmings etc. who manufactured and sold their own versions of the kit, and still do as far as I know.
 
I'm still unsure about what the vernier upgrade is compared to the normal isolastic upgrade? What are the real differences between using the vernier and the normal isolastic upgrade, it appears just get the rubber internals in the non vernier kit and u get the rubbers plus metal parts/mount in the vernier, but can't u use ur own original mount? What the benigit of the vernier if anyone knows? Thanks
 
interstateOz said:
I'm still unsure about what the vernier upgrade is compared to the normal isolastic upgrade?
Click to expand...

The vernier kit is the upgrade.

Basically the vernier kit allows adjustment to be done easily by simply rotating the threaded collar to set the adjustment, rather than having to partially dismantle each assembly each time to adjust the clearance by inserting different thickness shims necessary with the standard setup.
 
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