74 Mk2 - rear iso mount (2019)

L.A.B. said:

I don't remember the second one being all that difficult. Have you tried inserting the stud into the tube and then using that as a lever to work the rubber around while easing it into the cradle tube with a blunt tool or thumbnail?



Feeding it from either the right or left side shouldn't make any difference. The threaded adjuster is normally at the LH (primary side) of the tube on the rear Iso. (with the fully threaded tube end) and the fixed abutment on the RH end (with the short unthreaded end section).

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Tom Vachon said:

Got my parts and tore into the bike pretty much as u and LAB described.
Have good enuf access to the tube from the RH(timing side) side. The new Mk3 bonded setup has iso rubbers a full 0.120” larger dia than the id of the tube.
I have the right lube and was able to “work in“ the first one but it looks much more difficult for the second one since u cant work the shaft up/down/around near as much with the shaft nearly fully engaged. Before i put it in the freezer and cut leads on the rubbers and the end of the steel tube, would u pls verify that feeding it from the RH side the first rubber in is the one on the end that threads into the “adjuster” which has the little holes for the “tommy bar”. And the second end that ends up on the timing side is the one that screws onto the end piece with the threaded holes to accept the grub screw. Is that right?
Thks, Tom

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joe czech said:

yes, verify that i installed everything from the RH side,

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joe czech said:

i bought my front/rear iso mounts from Old Britts. they were andover-norton kits and ID'd as retrofit assemblies for the pre-Mk3 commandos. my understanding is they differ from standard Mk3 assemblies.

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joe czech said:

it's been around three years, and to be honest, i just vaguely remember the details. i do remember assembling the right side adjuster and gator as a unit, or sub-assembly, and slipping it between the frame and engine/iso mount. i installed the shaft w/ rubber bushings in from the right, screwing it into the adjuster as far as it would go. this gave me enough clearance to install the RH collar, where i could then start the threaded shaft on the RH collar. as i tightened the RH side, i had to keep backing off the LH or adjusting side. basically, had to go back and forth until i could lock the right side w/ the grub screw, and have proper adjustment on the LH side. as i said, 3 years, and memory ain't what it used to be! i do remember, it was easier than anticipated.

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Torontonian said:

Just grease the living hell out of everything. Use a big dull screwdriver to prize in the assembly. The side of the grub screw fix whether left or right side placement is unimportant. Mine came with the grub screw fixed end on the other side. No biggie.

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