Technical Discussion Topics related to Technical Issues

Oil pump chain deflection

Thread Tools
 
Search this Thread
 
Old 04-05-2009, 11:46 AM
  #1  
Senior Member
SuperBike
Thread Starter
 
Truckinduc's Avatar
 
Join Date: Oct 2008
Posts: 1,033
Truckinduc is on a distinguished road
Oil pump chain deflection

Im assembling my motor and It seems my oil pump chain has excess deflection.

I will measure it here in a minute, but I doubt it is supposed to be this loose.

Anyone know?
Truckinduc is offline  
Old 04-05-2009, 12:15 PM
  #2  
Senior Member
SuperBike
Thread Starter
 
Truckinduc's Avatar
 
Join Date: Oct 2008
Posts: 1,033
Truckinduc is on a distinguished road
7mm deflection, thats alot
Truckinduc is offline  
Old 04-05-2009, 12:26 PM
  #3  
Moderator
MotoGP
 
inderocker's Avatar
 
Join Date: May 2005
Posts: 2,708
inderocker is an unknown quantity at this point
I don't think there is an actual number in the service manual, but every motor i've been into has a lot of oil pump chain deflection.... even mine at 4,500 miles.
inderocker is offline  
Old 04-05-2009, 01:13 PM
  #4  
Senior Member
SuperBike
Thread Starter
 
Truckinduc's Avatar
 
Join Date: Oct 2008
Posts: 1,033
Truckinduc is on a distinguished road
Ya. I couldnt find anything in the service manual.

Im putting it all back together, but might order a new chain anyway. I dont wanna take any chances with my oil pump.

Now I have to get a 30mm 12 point socket for the clutch.
Truckinduc is offline  
Old 04-06-2009, 06:33 PM
  #5  
Senior Member
SuperSport
 
shayne's Avatar
 
Join Date: Dec 2005
Location: Sunshine Coast, Australia
Posts: 963
shayne is on a distinguished road
A new chain is always good insurance, but having said that you're not likely to notice much difference with a new one in regards to deflection. That sounds pretty close to what my new chain was like after I fitted it.
shayne is offline  
Old 04-06-2009, 06:39 PM
  #6  
Senior Member
SuperBike
Thread Starter
 
Truckinduc's Avatar
 
Join Date: Oct 2008
Posts: 1,033
Truckinduc is on a distinguished road
really, I wonder why they are so damn loose.
Truckinduc is offline  
Old 04-06-2009, 06:41 PM
  #7  
Senior Member
SuperSport
 
shayne's Avatar
 
Join Date: Dec 2005
Location: Sunshine Coast, Australia
Posts: 963
shayne is on a distinguished road
Not sure, but I have had other owners ask exactly the same question, so it would seem that is the way they are designed. I have never heard of a failure.
shayne is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
5150
General Discussion
101
07-17-2011 07:53 AM
CruxGNZ
Technical Discussion
3
02-20-2011 10:02 AM
AngryOlaf
Knowledge Base
3
05-25-2010 09:39 AM
spladle160
General Discussion
2
03-15-2010 08:42 AM
CNI Dawg
General Discussion
25
01-24-2008 08:59 PM



Quick Reply: Oil pump chain deflection



All times are GMT -7. The time now is 01:05 PM.