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Bleeding Hydraulic Valves
Posted: Mon Feb 23, 2009 9:47 am
by coffee_brake
The '92 Nighthawk that I am re-assembling has hydraulic valves and the Clymers says I must bleed them before reinstalling them. Says there's a special tool that will force kerosene into the tappet.
Why? Do I need the special tool? Is there a way around it? Is there a generic tool or a homemade setup?
Posted: Mon Feb 23, 2009 7:01 pm
by Wrider
The kerosene is to completely clean them out and flush the old oil out of them.
Not sure why you'd need a special tool on it though. If they're like the others I've seen you can just submerge them in a bath of kerosene and pump them until they're clean, then to the same in oil and reinstall them.
Posted: Tue Feb 24, 2009 5:28 am
by coffee_brake
Pump them with what? What device do I use to pump the old oil from the tappets?
Posted: Tue Feb 24, 2009 8:50 am
by Johnj
I've used a set of
channel-lock pliers.
Posted: Tue Feb 24, 2009 2:18 pm
by Wrider
Just pump them by hand by collapsing them and expanding them repeatedly until there's no air or old oil left in them.
Posted: Wed Feb 25, 2009 5:42 am
by coffee_brake
OK, I didn't even know there was a moving part in that little...thing. I can do this!...I hope.
Posted: Wed Feb 25, 2009 8:52 am
by Wrider
you can do it! We've got confidence in you!
Cof-fee Brake!
Cof-fee Brake!
Cof-fee Brake!
Cof-fee Brake!
Cof-fee Brake!
Posted: Wed Feb 25, 2009 1:21 pm
by coffee_brake
