A friend called me and said he used a 3 prong puller to pull the flywheel on his 05 450. I did not see it but he said the center of the crank pushed in about 3mm. I told him he made junk out of it. Was I correct in telling him that? I'm assuming the insert that got pushed in is part of the seal for oil flow and now the big end won't get proper oil pressure. Need some input. Thanks.
Opinion needed on damaged crank
Started by
blackie107
, Feb 22 2012 05:14 PM
15 replies to this topic
Posted 22 February 2012 - 05:23 PM
blackie107, on 22 February 2012 - 05:14 PM, said:
A friend called me and said he used a 3 prong puller to pull the flywheel on his 05 450. I did not see it but he said the center of the crank pushed in about 3mm. I told him he made junk out of it. Was I correct in telling him that? I'm assuming the insert that got pushed in is part of the seal for oil flow and now the big end won't get proper oil pressure. Need some input. Thanks.
Edited by mrmoto35, 22 February 2012 - 05:23 PM.
Posted 23 February 2012 - 11:48 AM
I once did more or less similar with a OEM Honda flywheel puller because a stupid dealer forgot to sell me the end cap wich you're supposed to put on cranck first.
That insert or whatever it is was also pushed in but i didn't replace anything. Orifice was still open and not damaged.
Traded bike in not too long afterwards but didn't have problems with it in that time and never heard anything back about it.
Post a pic so i can see if it looks similar..
That insert or whatever it is was also pushed in but i didn't replace anything. Orifice was still open and not damaged.
Traded bike in not too long afterwards but didn't have problems with it in that time and never heard anything back about it.
Post a pic so i can see if it looks similar..
Posted 23 February 2012 - 02:46 PM
The problem is with the end of the crank fitting properly into the seal in the case. Part 15 seals the case to the crank to feed it with oil. If that seal isn't sealing, you run the crank dry or under oiled. The seal description: OIL SEAL (10X21X5) 91204-KRN-671
Thats 10mm on the inside, 21 on the outside and 5mm deep. If the end of the crank is still only 10mm in diameter you could be ok, but you can see its mushroomed in the pic. If all you did was push that bushing down a little, it'd probably be ok. Pop the seal out of the case and see how it fits on the crank end. If you've gotta stretch it over, its toast.
Posted 25 February 2012 - 07:21 AM
How the F do you NOT see that you are doing that during the process?!
Posted 25 February 2012 - 05:15 PM
so how do you go about getting the fly wheel off without damaging that piece. Im in the process of rebuilding my crf450
Posted 25 February 2012 - 05:42 PM
Ericyzf359, on 25 February 2012 - 05:15 PM, said:
so how do you go about getting the fly wheel off without damaging that piece. Im in the process of rebuilding my crf450
http://www.ebay.com/...=item1c242ac2b8
Edited by mrmoto35, 25 February 2012 - 06:04 PM.
Posted 25 February 2012 - 06:41 PM
ok thanks for the help i wasnt sure if the shop i work at has that puller but now i have seen a picture of it im positive we have that puller
