dkshema
rrMaster
Location: Cedar Rapids, IA
My Posts This: Topic Forum | You'll want to remove the gunk before running the motor. If it's old castor oil residue, it will go gummy and make the motor run really bad.
There are two great ways to get that motor clean and ready to go.
1. Find an old crock pot. One that you will never use again for food preparation. Add automotive anti-freeze, put the motor parts (yes, disassemble the motor) to the pot. Plug in, set on low, and let cook on low for two or three hours. Unplug, let cool. Remove the parts, wash in hot water to remove all traces of anti-freeze. Dry the parts, either in your oven or using a heat gun. When dry, reassemble the motor carefully, using liberal amounts of after run oil.
2. Disassemble the motor (yes, that's something you're going to need to do eventually, anyway. Pick up a spray bottle of Dawn Power Dissolver from your local grocery store (it's with the dishwashing powders and liquids). Spray the parts (the stuff is almost a gel and clings well). Let sit about 15 minutes. Rinse well, dry, reassemble using liberal amounts of after run oil.
BEFORE you take the motor apart, use a scribe or other sharp tool to mark the back side of the connecting rod. That way you'll get it back correctly.
Remove the head, pull the cylinder liner. Note that the liner has a small notch in it, that lines up with a pin on the crankcase. That's an important reassembly note.
The piston ring-gap also has a small pin, located at about the 1 o'clock position (front of crankshaft is 'noon' . Make sure the ring gap is located over that pin prior to reinstalling the cylinder on the piston when putting back together.
With the liner out, carefully turn the crankcase so the piston is at top dead center, then reaching in the rear of the motor, lift the bottom end of the rod off the crankshaft. The piston, wrist pin, and rod all come out the top.
Slide the crankshaft out, you now have access to the bearings and internals of the motor for inspection and cleaning.
Reassemble carefully, in the reverse order of disassembly.
-----
* Making the World a Better Place -- One Helicopter at a time! *
Dave |
-.jpg)
