Maintenance & Technical > KX500 Original
Main Journal specs?
Motorrad:
--- Quote from: DoldGuy on December 08, 2010, 10:48:26 PM ---Motorad,
I was told by ......... Seal surface 1.179 Bearing surface 1.181
DoldGuy
--- End quote ---
I was too... But I am wondering now... as Both bearings stayed in the cases when pulled appart..... bearings were loctited onto the crank... and it came off easy...
My new bearings.. I can snuggly put them on and off one journal by hand (aid of 2 shorty screwdrivers) on removal... has me worried.... Im so used to my euro vintage stuff that is tight.. this doesnt seem right..
was hoping somone had a known good crank to measure for the good of us all.. as I cant find the spec in Clymer anywhere
dave916:
if you can get the new bearing on by hand you crank is worn ,[ no need to measure it]
the bearing should be interference fit. that why you should have to use a pullers to split the cases
if the motor comes apart easily ,[ it usual mean something is worn [cases or crank journals]
even with a worn journal a new bearing can appear tight , [as the crank is only worn slightly where the bearing spun,]
look for polished look on journal
if u rebuild engine with worn crank, may run ok for a few hours until crank starts moving sideway and damages the crankseals
Motorrad:
--- Quote from: dave916 on December 13, 2010, 05:04:14 AM ---if you can get the new bearing on by hand you crank is worn ,[ no need to measure it]
the bearing should be interference fit. that why you should have to use a pullers to split the cases
if the motor comes apart easily ,[ it usual mean something is worn [cases or crank journals]
even with a worn journal a new bearing can appear tight , [as the crank is only worn slightly where the bearing spun,]
look for polished look on journal
if u rebuild engine with worn crank, may run ok for a few hours until crank starts moving sideway and damages the crankseals
--- End quote ---
Yes I realize all this... Not my first rodeo... But I need a solid number for the journal sizes so I know how far off I am... so I can call the hard chrome platers and get her fixed.... seal serface and bearing serface
Reason I also am asking as my crank measures to exactly what stewart stated the measurements should be... to both me and DoldGuy...
kaw rider:
i have a crank here that measures 1.181 and seal surface 1.180.
jonny500:
i have measured a crank and new bearing as photos show and have come up with an interferance fit of .0005 . from experience that is about right as a general bearing fit. my crank is good, no shine on the journal and i would not have a hope in hell of pushing it on without a press. please bare in mind this is a vernier and they are not the most acurate
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