chaincase oil really dirty...

destey said:
Is it really a good idea to spray the inside of the case down with brake cleaner? I can picture the brake cleaner drying out the seals and potentially ruining them.

Also, if you have the chain case half apart, might not be a bad time to change out the driveshaft and jackshaft bearings and seals. I just did mine last season and they definitely needed it.
Click to expand...

This is a good point. im in the middle of changing my case oil right now. im going to be wiping out all the sludge as best as i can, and spray just the cover side to get it nice and clean then i'll let it air dry. what a pita job this is....gotta remove all pipes and can just to get at the damn case! :dunno:
 
I was alway told just to use a lubricant type cleaner. W-D 40, pb blaster ect.... That way if any residue is left it wont break down the oil and wont dry your seals.
 
Maybe I took the easy way out but I put a heat gun blowing on the chain case and let it run (on low) for 30 minutes, my IR laser said the case was sitting at 155 degrees f when I removed the heat. I let it go that long (in a garage with me standing right there watching) to make sure I heated the whole thing not just the outside of the case. Then I used a pneumatic oil remover (this one is powered by an air compressor) the old oil was disgusting but really runny and came out the dipstick hole. I didn't have to remove anything but the dipstick :)
 
Destey, getting ready to change drive & jack shaft seals. Have changed bearings before but never seal. Can't seam to get entire case off? Have 98 srx700 any help will be great...
 
Cooper0809 said:
This is a good point. im in the middle of changing my case oil right now. im going to be wiping out all the sludge as best as i can, and spray just the cover side to get it nice and clean then i'll let it air dry. what a pita job this is....gotta remove all pipes and can just to get at the damn case! :dunno:
Click to expand...

CRC Brake-kleen is designed to clean brake dust from backing plates of vehicles with rear drum brakes amongst other disc/drum brake uses. What's in the middle of the backing plate behind the axle flange of a RWD vehicle? The axle seal.

I wouldn't soak rubber parts in it, but IMO - what RXjim suggests is correct.
 
Brake cleaner cuts the sludge the best. I put a rag in the belly pan and had my drip bucket catch anything that went out the plug. The lower bearing is so far buried into the case that you really have to go out of your way to soak it with cleaner.

I'm trying royal purple in my indy this winter, 75w-90. They list it as ideal for chain cases. I always had shavings on the dipstick last winter but the reverse was adjusted incorrectly so it was always pulling against the shift fork. You could see the wear on it. I have to say the polaris reverse chain case is an inferior copy of the Yamaha. They don't use a one piece gasket so you have to put sealant on the seam and the Jack shaft doesn't have a bearing in the outer cover like the Yamaha does, I really like that.
 
I usually blast it down with brake clean. After all the major crud is out I'll finish it off with starting fluid. Starting fluid is a GREAT cleaner.
I have drained a JDX chain case before that had semi hardened cr@p in it. It was thicker than the x-tra thick green grease. Yea....that thick. Put the plug back in after some of it came out. Put about 1/4 gallon of diesel in the chain case and went out for a leisurely ride. Came back & took the cover off. Clean as a whistle.
Use to clean my motorcycle chain in diesel as well.
 
I run amsoil synthetic chain and gear case oil. Runs very clean and doesn't go thick as molasses in January when I'm running in, well... Mid JANUARY!
 
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