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Thread: Winterising 3 ph machines
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31st May 2012, 02:43 PM #1
Winterising 3 ph machines
Remember the old Castrol GTX oil ad? "Oils ain't oils", well Sol was right.
I have had for a lot of years now a McNaught grease gun that is loaded with a stick from a bulk grease can. I managed to get onto a cartridge grease gun to make the greasing job more pleasurable(?). I had been using bearing grease in the other gun mainly 'cause thats what I had. Mainly greasing the the chassis of the Landcruiser. I went to but a cartridge of grease for the new gun and was overwhelmed buy the choice. I ended up buying a general duty grease, its a pretty blue colour. I loaded up the new gun with said cartridge and looked around the shed for a likely candidate that I could try my new toy out with. I duly pumped a few good strokes into the Jointer, the one with the 100mm cutter bar with 2 blades in it, Then I moved onto to thicknesser. It had more grease nipples to pump into. Operation over and thought how clever I was to now have a cartridge grease gun (Isn't it funny how we are so easily entertained)
The day came when I needed to use the Jointer. Air temperature would have been only 3 over night. So I turned on the 3Ph Converter and then the Jointer. Talk about s-l-o-w motion!!!!The thermal cutout did its job. So now, where is the problem? I took of the belts to isolate the motor and turned on the switch.......motor ran up to max revs no trouble. Still scratching head.....then it dawned on me. The new bloody blue ubeaut (no reflexion on the name of our beloved Forum owner) grease is too stiff for the bearing on the Jointer.
So now I have to disassemble the cutter bar on the poor old Jointer, clean out the old original grease plus the new blue grease, wash out the bearing and replace the grease with....you guessed it, the wheel bearing grease in the old gun that is a pain to fill.
While I'm at it the Thicknesser will have to have the same surgery as well.
Is this progress.....or digress.
We sure can get our selves into trouble and with no women in siteJust do it!
Kind regards Rod
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31st May 2012, 07:37 PM #2Taking a break
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Part of the problem may have been over-greasing causing too much pressure on the bearings (from the sound of it you put extra grease where there was some already). I did this once on the spindle moulder at work and it overloaded the circuit trying to start it.
Fortunately, we were able to get it to start on the slowest speed and left it running for about 30 mins until the excess grease worked its way through the seals and out of the casing.
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31st May 2012, 07:55 PM #3
Yeh, I thought the same. The bearings are situated inside a compartment leaving a cavity around them and a grease nipple on the outside. I think what I have done is pumped more grease (thats too heavy) into the compartment which has pushed into the bearings. The bearings are open, no seals around them, and so by over filling the cavity has forced the mixture of grease into the bearings.
In a way it might have been a good thing because now I have to go in and clean all the grease out. The 2 machines are new to me, had them for maybe 12 months, and all I did before bringing them into service was to clean the outside and free up and lube the table mechanisms. They both ran so sweet that I thought they would be OK with "maybe a few pumps of new grease" Sol was right "Oils ain't oils".
I am not expecting any dramas with the bearing when I get into them (Fingers crossed)Just do it!
Kind regards Rod
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