Quote:
Originally posted by Bryan
Alex, Thanks for the vote of confadence. If I cant get oil light bushes of the shelf I will turn some up out of a Nickal ali bronze or phospher bronze. I will spin the armeture up on the lathe and do all the dressing as recomended.
Richard, if you could send me a scanned copy of the illistrated parts list for the starter motor that would be a great help as the closest I have is what is shown in the CMP manual. and our slightly diffrent.
Thanks all for you help!!!
I will let you know how I get on.
Bryan
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Hi Bryan..
Stick to the OILITE Bushings..
Here is a blurp on them explaining how they work..They are a trade name bushing so ask by name..Someof the dealer will have them..
I'd like to go help you with that but I have to be back by dinner tonigfht...
dying to hear the results...
THis is a good reminder to all of us who only sometimes get into this as a hobby ..
Getting Lubrication to an Oilite Bushing
The best bushings to use are oilite, not brass nor bronze, but an oilite impregnated powder metal bushing. Why oilite? 15% of the weight of the bushing is the oil that has been impregnated by using hot oil and a vacuum system under pressure. The air is sucked out of the powder metal bushing pores creating a void that is then filled with oil. The best lubricant is oil, not grease. Grease will not penetrate. It is just a surface coating and will not last as long as good oil soaking.
Over time oil leaves the bushing. The best way to get oil back into the bushing is to remove the sprocket from the drum (if the sprocket is permanently attached to the drum, then press out the bushing). Clean off the sprocket and bushing with a rag and an air hose and wipe them CLEAN. Never use gas or brake cleaner to clean the sprocket and bushing.
Oil comes out by centrifugal force, heat and leaching out if you improperly store the sprocket. Put the drum and sprocket in a plastic bag to store. Never store them in a cardboard box because the cardboard will act like a sponge sucking out the oil.
Get a small size (1 lb.) coffee can and put in all your sprockets with bushings and roller bearings. Pour in enough oil to completely cover the sprockets. Now what oil should you use?? Contrary to what you would believe the cheaper the oil, the better. Use straight 30 weight petroleum based oil with no additives. You don’t want a synthetic anti-friction oil because for a clutch to work you need friction. You don’t want to get anything on the disk or drum that will prevent friction to occur. Cheap oil when it makes contact to the drum or disk will burn off at 460 degrees and when a clutch is slipping it gets mighty hot. Next put the plastic lid back on the coffee can. Using an old crock pot, place an inch of water in the bottom, turn it up to high and place the coffee can with the parts into the crock pot. Ideally the oil should be at 180 degrees to 200 degrees. You don’t want to boil the oil, you just want it hot enough to melt one cube of paraffin wax (3” x 2” x ½” thick). The water will come to a boil and heat up the oil real nice. When the wax melts, stir it around in the coffee can with a stick so it mixes very nicely with the oil. Leave the bushings in there for 45 minutes. As the oil gets hot the air will come out of the oilite bushings and the void will be replaced with oil. You are going to save this solution and store it so be sure to keep it covered when done to keep any contaminates out of the oil.
After you take the coffee can out of the crock pot, shake the sprockets a little to get the excess solution off them, then hang the sprockets over the can and let them drip back into the solution. After they have cooled down place them in a plastic bag and you are ready to mount them back in the clutch drum when needed. The wax is an excellent lubrication for the sprockets.
You can do the same thing to prep your chain but don’t clean the chain with anything but air and a rag. Gas and brake cleaner will just dry the chain out too much and get into places the lube cannot. Wax is a very good lubricant for chain as well as the bushing.