How do you repair a split crankcase engine?
In all cases you will need to pull the engine from the frame and remove the clutch, internal shifter linkage, crankcase bolts or screws and maybe the flywheel and electrical coils, depending on what repair has to be done. If the crankcase is split vertically (Up and down) You will have to remove the cylinder and cylinder head.
How to split the cases on a 2 stroke engine?
How to Split the Cases With or Without A Case Splitting Tool With the engine positioned on your engine building box, and with the puller attached to the engine case and leveled as discussed above, begin threading the puller’s push bolt in against the crankshaft while watching and listening for the cases to begin separating or binding.
How do you loosen the crankcase bolts on a motorcycle?
Loosen the Crankcase Bolts You’ll then remove the bolts on the top and the bolts on the bottom of the motorcycle crankcases. When you remove the bolts, keep track of where the came from.
What to do if your crank bearings split?
If it doesn’t, sometimes you need to take a rubber mallet and tap the back side so that it comes out together. You don’t want it coming off at an angle. It needs to all come out parallel. Once you’re done with it, go ahead and remove the puller, and pull your case house half off.
What’s the best way to split a crankcase?
If you do not have a crankcase splitting tool, splitting the cases is possible using a commonly available harmonic balancer puller (available at auto parts stores) along with 2 (long) 6mm x ~150mm bolts and a dead blow hammer.
How to Split the Cases With or Without A Case Splitting Tool With the engine positioned on your engine building box, and with the puller attached to the engine case and leveled as discussed above, begin threading the puller’s push bolt in against the crankshaft while watching and listening for the cases to begin separating or binding.
If it doesn’t, sometimes you need to take a rubber mallet and tap the back side so that it comes out together. You don’t want it coming off at an angle. It needs to all come out parallel. Once you’re done with it, go ahead and remove the puller, and pull your case house half off.
What to do if your crankshaft is loose?
If it is loose, Pro X or Hot Rods makes a complete crankshaft assembly, or you could have your crank rebuilt by a machine shop. Now it’s time to remove the crank bearings and seal to start off with. We’ll remove the seal retainers. We’ll flip it over and use a punch or a screwdriver and pound that seal out.