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Member postings for simon field

Here is a list of all the postings simon field has made in our forums. Click on a thread name to jump to the thread.

Thread: Advice for novice early ML7 owner please
09/06/2014 00:05:31

maybe a late reply but i would just like to add that the grubscrew also seems to have the function of keying the pulley cluster to the backgear.

the small upper backgear is made of bronze and runs through the centre of the pulley cluster forming a bearing/bushing for the pully and backgear to rotate on the mainshaft.

it has a hole through it presumably to allow for oiling but possibly also for the grubscrew to key the pully and bushing together. if the grubscrew is over-tightened it tends to lock the backgear to the mainshaft rendering backgear useless but if grubscrew is too loose (on my lathe) the pully rotates freely on the bushing.

either this is the normal setup or i may be missing a key between the pulley and bushing, or perhaps the hole in the pulley and bushing are meant to line up only for oiling and during service they are meant to be out of allignment but if this were the intended arrangement i would expect to see a flat somewhere on the bushing at 180 degrees to the oilhole for a more positive location..

a lot of my reply here is conjecture as i have no early manual and have not dismantled the pulley and backgear yet to determine its design.

if anybody out there has access to a manual for the early models i would love to know what it reads on the matter.

simon

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