Lower Bearing Play

Got questions? We got answers....
Post Reply
User avatar
Jeb
Gold Member
Gold Member
Posts: 1894
Joined: 08:01 pm Jul 14 2006
Country:
Location: Cincinnati / Northern Kentucky

Lower Bearing Play

Post by Jeb »

I couldn't find the recommended max lower bearing play in the online manual . . . anybody ?
"No farmer ever plowed a field by turning it over in his mind" -George E. Woodbury

CLICK FOR PICS!
User avatar
canyncarvr
Gold Member
Gold Member
Posts: 6943
Joined: 01:07 pm Nov 05 2004
Country: US
Location: The Mythical State of Jefferson

Post by canyncarvr »

Side to side?

That's not generally a wear factor..it's usually quite a bit...and doesn't generally matter.

Up and down?

If you can feel it...it's way bad.


imo and completely lacking any notable references.

Consider the source
Using a perceived level of knowledge to boost my self worth.
Non impediti ratione cogitationis

bike profile: !clicky!
KarlP
Supporting Member III
Supporting Member III
Posts: 1484
Joined: 02:26 pm Jun 29 2005
Country:
Location: Alabama

Post by KarlP »

I'm with CC on that. Any actual up down play and it's long gone, it'll beat the lube out in no time. Besides, if you can feel a bit of play by hand imagine how much there really is under power at the rear wheel?

'Course, you did not say up down, did you.

CC had what looked like a neat solution to that lower bearings weaknesses, if you'd care to search.
'08 KTM200xc
'99 CR/KDX Hybrid with that RB stuff done to it
KX100 for the boy
User avatar
canyncarvr
Gold Member
Gold Member
Posts: 6943
Joined: 01:07 pm Nov 05 2004
Country: US
Location: The Mythical State of Jefferson

Post by canyncarvr »

Uh oh...we're not talking about a connecting rod?

Are we?

Lower shock bearing? Some game in Austrailia (sic).

I think I've fallen (probably down the stairs, even)...and I know I can't reach my beer!!!

WHAT ARE WE TALKING ABOUT??
:rolleyes:

Consider the source
Using a perceived level of knowledge to boost my self worth.
Non impediti ratione cogitationis

bike profile: !clicky!
User avatar
Jeb
Gold Member
Gold Member
Posts: 1894
Joined: 08:01 pm Jul 14 2006
Country:
Location: Cincinnati / Northern Kentucky

Post by Jeb »

Oops - should've been more specific . . .

yes, I'm talking about the lower ROD bearing. I looked to see what the slop (side-to-side) is tolerable per spec in the online manual and couldn't locate it.

and thanks!
"No farmer ever plowed a field by turning it over in his mind" -George E. Woodbury

CLICK FOR PICS!
User avatar
canyncarvr
Gold Member
Gold Member
Posts: 6943
Joined: 01:07 pm Nov 05 2004
Country: US
Location: The Mythical State of Jefferson

Post by canyncarvr »

There probably is a specification, but I don't know what it is.

If it was a babbitt type bearing, it would matter because excessive side play drops oil pressure..sometimes to the point of bearing failure.

...but it isn't...so don't!

:wink:

Consider the source
Using a perceived level of knowledge to boost my self worth.
Non impediti ratione cogitationis

bike profile: !clicky!
User avatar
Jeb
Gold Member
Gold Member
Posts: 1894
Joined: 08:01 pm Jul 14 2006
Country:
Location: Cincinnati / Northern Kentucky

Post by Jeb »

OK, so the moral of the story is I don't need to worry about it . . . right?

I know it's something that's reputed to be important to check on my son's lil' yellar rocket so I started drawing conclusions.

So what's the criteria for lower rod bearing replacement-time I wonders?
"No farmer ever plowed a field by turning it over in his mind" -George E. Woodbury

CLICK FOR PICS!
User avatar
Cturbo
Member
Posts: 44
Joined: 07:25 pm Nov 09 2007
Country:
Location: Puerto Rico

Post by Cturbo »

I did found a little up and down play on mine and decide to ignore it. That was 2000 miles ago :shock: The service limit of that bearing is two times the service limit of a four stroke. Mine is a little over the service limit and I am prepared to face the consequences :wink:
1992 KDX 200
2004 KLX 110
2006 SMR 510
Post Reply