So my Hobart N50 has arrived and......
After a fair bit of cleaning it's looking OK, but I may send the base off to a mate with a bodyshop for a respray :)
It was making a bit of noise when running but after a tweak of one the adjustment screws its pretty quiet but there may be room for improvement.
Now I have a few questions:
Firstly the gear selector is a bit loose and it moves up and down- is there any way to tighten this up?
Secondly, the grease looks OK but does look like motor grease (brown) and it seems to be fairly liquid around by the gear selector and is almost flowing out of the hole in the plate - is this normal?
Thirdly, I took the rear cover off and this copper cup fell out. It's about 1cm across and was full of old grease. I can't see it on the parts diagram..... anybody know where it comes from?
Hello,
This piece of copper looks like the small cap which is embossed at the bottom end of the solar shaft in order to provide some sealing at center of planetary. Do you say you found it at the back of the motor ? this is very strange !
For your other questions : gear selector always keeps some movement play, since it drives the gear yoke through the cam plate. If this plate is surely fastened then they will be no problem for gear shifting. Over time the grease will expire and split up into some liquid oil and on other sides into compact blocks (typically these blocks are encountered into carter edges corners where there is no mechanical action). You may simply wipe off the leakages and all will be Ok again for some time. Repacking the whole gearbox with grease is only required when gear lubrication is insufficient, you will ear it when gear located above the box are noisy and when not any mesh tuning solves this.
According to the picture your N50 looks in good shape :)
Regards
Hi Flormont
Do you mean the cupped washer labelled 13 here?
Yes, this is this kind of cap inserted in force at center of planetary (after this one has been fastened to the solar shaft) and hammered in order to keep in place. However after thousands of revolutions and vibrations, this cap can come off and drop from its place if it wasn't hammered enough at first installation.
Do you have such a cap properly installed in your planetary ? Anyway this device is not absolutely necessary : it only prevents some oil leakage at the bottom of solar shaft, but if some drops are discovered here then you will also find a lot of grease overflowing from the drip cup and other gearbox outputs, meaning that it was high time to repack grease into the whole gearbox :)
No idea if the cap has been replaced but there's not really much grease in the drip cup. I think I'll be taking out the existing grease and loading new grease anyway just to be safe.
Thanks for the info :)
I just yesterday, stripped my new/OLD Hobart N-50's gear box down to its' bare nubbins and cleaned out all the old gunk. after 50+ years it was pretty darned nasty in there. It was not terribly difficult to do, just a few wrenches and screwdrivers and a lot of pictures along the way to aid in re-assembly.
See : http://www.thefreshloaf.com/comment/316133#comment-316133
It does not absolutely require a service manual PM me and I'll be glad to hook you up with one), but it helps, especially finding the 7 screws holding the two halves together, and disassembling the tumbler yolk. As well as adjusting the Tumbler Yolk Stop and the Eccentric Shaft.