Thursday, April 23, 2015

car motorcycle oil seals

Car motorcycle oil seals.Now jack or hoist the engine off its mounts high enough to allow the removal of the oil pan. Use jack stands to safely suspend the engine. Remove the oil pan bolts. Use a sharp, stiff putty knife to pry the oil pan off the engine. Continue to jack the engine until you are able to remove the oil pan. You may have to remove the starter motor and exhaust pipes to get access to all of the oil pan bolts.
Tap out old seal with a brass punch.Car motorcycle oil seals
Once you have the oil pan off, remove the rear main bearing cap bolts. Pry off the bearing cap with the sharp, stiff putty knife. Be careful not to scratch the crankshaft!
Cut off rope seal flush with cap.   
There are three kinds of rear main seals. The one piece metal clad rubber is found on newer front wheel drive cars. The two part rope type and the two part neoprene lip type are found on most of the rear wheel drive cars; we will deal with these two part seals. Look at the old oil seal; if it's neoprene, the lip should be facing towards the front of the engine. If it's not, it would be a good reason for it to leak. The rope type seal will just appear mashed in its groove.
Use a brass punch to remove old upper seal.Car motorcycle oil seals.
To remove the upper part of the seal you will need a small brass punch. Tap one end of the seal with the punch in the direction the crankshaft normally rotates. As you tap, have someone turn the engine over by hand. This will make it easier to remove. Some seals have a wire embedded in the center of the seal. Try to tap on the wire if you can. When the seal shows up at the other end grab it with needle nose pliers. Use an insulated 8 gauge wire to push the seal while you pull it with the pliers. The wire insulation prevents the crankshaft from getting scratched.Car motorcycle oil seals.
Rope seal puller.   
To install the upper seal back over the crankshaft, soap-up the side that goes in the block and oil the side that slides on the crankshaft. Make sure you do not soak rope seal in oil; damage to the graphite in the seal will occur if it's soaked in oil. Place the seal on the crankshaft and push it into the hole while rotating the crankshaft in the same direction. Make sure the lip is facing towards the front of the engine. Make sure you push the seal with a rotating motion so as to not damage it. If your car is older and uses the rope seal, you will need a "Chinese finger" type puller. Thread this puller over the crankshaft and insert the rope seal in it. Pull until the seal is in place. Trim rope seal flush with engine block.Car motorcycle oil seals.

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