Chainsaw Repair
How To Basics - Carb Fixes + Mods - IPL and Service Manuals => How To Basics and Fixes => Topic started by: Walt on October 22, 2013, 04:32:15 pm
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I always make it a point to clean chains in the ultrasonic before I sharpen them on the grinder, today I had a friend stop by in a hurry with a roughed up chain and I had both cleaners in use for other projects, I was going to spray it down with purple power and hit it with hot water but I was out...ended up using Shout laundry cleaner and hot water and it did a good job removing the grime, after a quick blast of air I was able to grind it and send him on his way. I am curious what you guys use to clean chains before grinding.
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If mine or chain comes in on a saw, I just make a cut in a fresh stick to clean the chain off.
If chain comes in without being on a saw, I just make sure cutter area is cleaned off before grinding. Then test in a stick on one of my saws.
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I never test them after sharpening, I figure as long as the angles are right and I put the chain on correctly it should be good to go, I will admit to doing some extensive testing after I do any motor work.
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I dont test them all. Just the dirty ones that the chassis needs cleaned up.
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Kinda unrelated but I'm hoping to do a complete service on a Kobelco 160 next week, I think an hour test will be in order after that and I have the perfect project... I mean test on the shallow end of one of my ponds.
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My dad brought up some old 325 chains thats been hanging in the barn for years. Nasty dirty caked on crap. Ran them through a log and cleaned right up for the grinder. 8)
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+1
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The one chain I looked at the other day looked as though it had been run through creosote years ago?
I gave you an old worn out Stihl RS33 X 72DL in the spring that was freshly square ground. It also was black as smut as though someone was cutting railroad cross ties.
I noticed that after you ran that old Stihl RS33 chain a few times in clean wood, that the chain looked as clean as new.
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I've posted this in other forums, but might as well add it here, since it has come up.
There are chains that have a light layer of oil and saw dust on them. And there are chains that look like they are encased in asphalt. And everything in-between. Some chains are too dirty to mount and run through wood to clean up. And you have to have the right saw/bar combination to do that, so that does not always work on other people's chains, scrounged chains, etc.
If they are really dirty, I can't see the markings, any damage, poorly done field repairs, etc. I like to resize, replace any damaged links, remove any drive link burrs, etc., before I sharpen. Also want to keep gunk out of my wheels.
I use 'Super Clean' (sodium hydroxide-based purple cleaner/degreaser - works better than 'Purple Power'. ZEP industrial, and Rubbermaid brands of purple cleaner also look like they have sodium hydroxide) diluted 1:1 with water. Wear protective gloves and splash goggles.
Swishing the chains around in a cut-down jug for about 10 seconds gets rid of most of the basic crud. Laying the chains flat and hitting them with an old toothbrush takes care of most of the rest. The worst chains go back for a second bath. Rinse them out in a couple changes of clear water, then dry them for about 10 minutes in an oven on an old cookie sheet at about 150 to 200° to prevent rusting.
It goes pretty fast if you're doing a batch of chains.
Since you have removed all of the oil make sure to re-ubricate them after grinding to prevent rusting. I spray the chains down with WD-40 from a trigger sprayer in an old cake pan lined with a few paper towels. The towels remain in the pan for subsequent batches.
I have 'saved' many neglected chains this way. It will not remove rust, but is a necessary step prior to rust removal methods, if you need to do that as well.
Philbert
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Here are two chains that looked identical in a pile of chains I received. One was 'protected' from the rust by the gunk(?). On the other, the gunk kept the moisture close to the chain contributing to rust(?).
Can't tell till you clean them.
Philbert