Thread: Adaptor shaft

I'm always right!😆 makes more sense to me to put the dial indicator on the adapter housing as this should tell me if tge out put shaft is true to the housing. But hey i'm not that smart, just a stupid electricain so could well be wrong😕

Originally Posted by Vern

PLus your dial indicator won't stick to aluminium

Trivial excuse. Bolt a scrap piece of steel to your housing for the magnet base to stick to.

I think we need to talk in terms of where the probe and base should be placed.

I'm hearing all the why nots and none of the can dos
but I haven't yet bought a box to do it all myself.

If you have to torque up the flange, then torque up the flange!

The result will be that you are checking the assembly instead of each component.

If you mount the base of the dial indicator assembly on the back of the MSA housing and the probe on the flange face. You will find out if it is running parrallel to that point.

If you then mount the base of the dial indicator assembly and the probe on the back of the housing you are double checking that the housing is also flat and parrallel.

Then having the mount on the housing and the probe on the witess ring will confirm that the flange is axially centred (true).

Once you have those 3 parameters checked you can move on to the adapter shaft and housing and check each component in turn.

What you won't be able to do, unless the adapter housing has an inspection window, is check the final assembly. But you can measure and check everything up to that point.

(Remember one of the commercially available Holden engine conversion kits were often out of alignment it 3 separate planes. They had problems with clutches, primary pinion wear and even cracking of the adaptor housing. Checking the assembly with the dial indicator would have saved a lot of hassels.)

I won't be doing the nut up until the engine and gearbox are back in the frame so that the engine mounts and gearbox mounts can counter the rotational forces.

Originally Posted by workingonit

I don't think you understand the dial indicator I have. To say 'mount the base of the dial indicator assembly and the probe on the back of the housing you are double checking that the housing is also flat and parrallel' implies to me that you think my dial indicator can revolve on its own base - it doesn't.

back of the gear box with dial on edge of the flange. spin flange. if all ok. the mount base of dial gage on the flange with the dial on the Gbox housing. spin and this will tell you if the shaft is at right angles to the housing Where the adaptor will be bolted to

First, I'm not going to torque the bolt at this stage, it's not a five minute job

Without the flange torqued up to spec, just hand tight, the witness ring has a variation of 0.2mm. The mating face of the flange still shows the same variation as when I simply had the flange and dial on a steel plate. Can't give you a clock of the back of the MSA case as there is insufficient flat surface on the flange to securely mount the magnetic base.

put two bouts in the flange threads towards the box. shove a bar between them and onto the ground. torque the same way. ie pushing to the ground same side as the bar