This all took place on an 05 Wrangler X
Ran into something while replacing my clutch, searching the internet I can't find any posts with this issue. Thought maybe I could help someone else out.
When removing the clutch assembly the pilot bushing fell out. I have had several people try to correct me and tell me it is a pilot bearing, not bushing. The bushing is what the pilot bearing presses into, then I am told no, the pilot bearing just pushes into the end of the crank. The pilot bearing is part number SCE-1295 (National Bearing) the bushing part number is FC69907 this comes with the needle bearing already inserted.
My pilot bushing was completely loose, the resistance to insert or remove, the outside of the bushing was eaten away. No problem, get a new one. Got new one and drove it in, slid in tight then all of a sudden went loose. Turns out the bushing was spinning inside the crank and removed enough material that it was only tight for the first 1/4" or so. I decided to drive it in until t was flush with the outside of the crank, that is when the recess on the bearing kept it from staying tight.
I tried to drive it in until the recess was flush with the end of the crank, this was very solid, but couldn't get it quite straight and didn't feel comfortable with that as a solution, fearing it was not completely straight and would prematurely wear the pilot bearing I abandoned that plan.
Final solution, I took the bearing to a machine shop and he filled in the the recessed area larger than ridge that catches, then put it into a lathe and gave me a flat surface to catch on the crank when driving it in. This worked beautifully, I drove the bushing in and it now stuck out about 2mm. One concern I had was that center of the clutch plate would rub on this piece, I took several measurements prior to install and I fest I had about a 1/2" to spare. The pilot bushing is now approximately 5mm closer to the clutch than before. After installing the clutch I stuck my finger through the clutch and could fell that I had about 1/2" between the clutch center and the pilot bearing, so that should be good.
One thing I neglected to measure is whether the splines of the input shaft would contact the pilot bushing due to the extra 5mm, I highly doubt it, but that will continue to float in the back of my head.
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Ran into something while replacing my clutch, searching the internet I can't find any posts with this issue. Thought maybe I could help someone else out.
When removing the clutch assembly the pilot bushing fell out. I have had several people try to correct me and tell me it is a pilot bearing, not bushing. The bushing is what the pilot bearing presses into, then I am told no, the pilot bearing just pushes into the end of the crank. The pilot bearing is part number SCE-1295 (National Bearing) the bushing part number is FC69907 this comes with the needle bearing already inserted.
My pilot bushing was completely loose, the resistance to insert or remove, the outside of the bushing was eaten away. No problem, get a new one. Got new one and drove it in, slid in tight then all of a sudden went loose. Turns out the bushing was spinning inside the crank and removed enough material that it was only tight for the first 1/4" or so. I decided to drive it in until t was flush with the outside of the crank, that is when the recess on the bearing kept it from staying tight.
I tried to drive it in until the recess was flush with the end of the crank, this was very solid, but couldn't get it quite straight and didn't feel comfortable with that as a solution, fearing it was not completely straight and would prematurely wear the pilot bearing I abandoned that plan.
Final solution, I took the bearing to a machine shop and he filled in the the recessed area larger than ridge that catches, then put it into a lathe and gave me a flat surface to catch on the crank when driving it in. This worked beautifully, I drove the bushing in and it now stuck out about 2mm. One concern I had was that center of the clutch plate would rub on this piece, I took several measurements prior to install and I fest I had about a 1/2" to spare. The pilot bushing is now approximately 5mm closer to the clutch than before. After installing the clutch I stuck my finger through the clutch and could fell that I had about 1/2" between the clutch center and the pilot bearing, so that should be good.
One thing I neglected to measure is whether the splines of the input shaft would contact the pilot bushing due to the extra 5mm, I highly doubt it, but that will continue to float in the back of my head.
