All Things Moto! Dirtbike Forums

Go Back   All Things Moto! Dirtbike Forums > Dirt Bike - ATV - Suspension Forums > 2-Stroke Dirt Bike Forums > 2-Stroke Dirt Bikes - Honda

Reply
 
LinkBack Thread Tools
  #1  
Old 03-22-2014, 03:03 PM
Detroiit's Avatar
Novice Class
 
Join Date: Jan 2012
Last Online: 05-20-2014 04:17 PM
Location: Michigan
Posts: 78
Default Crank Installed but seems tight. Help

     

I assembled my cases today. they are not torqued to spec yet and i noticed that the crank don't spin as easily as it did before. I replaced the bearings and oil seals. I can spin it but it does have a measure of "drag". Is this normal for new bearings/seals? I am Reusing my oem crank.


edit..

I just loosened all the case bolts and it freed up again.. any thoughts?

Last edited by Detroiit; 03-22-2014 at 03:15 PM.
Reply With Quote
  #2  
Old 03-22-2014, 05:27 PM
stevo450's Avatar
ATM! Pro Class
 
Join Date: Aug 2012
Last Online: 01-31-2017 08:35 AM
Location: South Australia
Posts: 3,709
Default

Your crank might not be centred in the cases.
Reply With Quote
  #3  
Old 03-22-2014, 06:04 PM
Detroiit's Avatar
Novice Class
 
Join Date: Jan 2012
Last Online: 05-20-2014 04:17 PM
Location: Michigan
Posts: 78
Default

seems my trans is bound up to.. can turn the shafts.. taking cases apart .. i triple checked the gears/washers on the shafts.. maybe this time ill see something diff..

still open to suggestions
Reply With Quote
  #4  
Old 03-22-2014, 08:28 PM
Pro Class
 
Join Date: Nov 2011
Last Online: 11-04-2018 07:39 PM
Location: Cincinnati, Ohio
Posts: 1,237
Default

what was your method of installing the crank? You should have pulled it into the cases, not pressing the cases onto the crank.

---------- Post added at 09:28 PM ---------- Previous post was at 09:16 PM ----------

Quote:
Originally Posted by stevo450 View Post
Your crank might not be centred in the cases.
What is your method of centering the crank? I torque the primary gear onto the crankshaft. This pulls the crank against the right side main bearing, which is seated in the right case half. At this point, what do you do if the crank needs to move to the left?
Reply With Quote
  #5  
Old 03-24-2014, 11:44 AM
cowboyona426's Avatar
JOATMON
 
Join Date: Feb 2003
Last Online: 11-15-2018 11:27 AM
Location: Newport, WA, USA
Posts: 9,495
Default

Quote:
Originally Posted by 351mustanger View Post
what was your method of installing the crank? You should have pulled it into the cases, not pressing the cases onto the crank.

---------- Post added at 09:28 PM ---------- Previous post was at 09:16 PM ----------



What is your method of centering the crank? I torque the primary gear onto the crankshaft. This pulls the crank against the right side main bearing, which is seated in the right case half. At this point, what do you do if the crank needs to move to the left?
I know sometimes a thin washer is needed to move the crank to one side or the other and get it centered up properly, though I've never had to do that myself. I install cranks like you do and so far I haven't run into any issues.
Reply With Quote
  #6  
Old 03-24-2014, 12:09 PM
ATM! Pro Class
 
Join Date: Jul 2011
Last Online: Yesterday 10:12 PM
Location: Benton, LA
Posts: 4,925
Default ??????

Are you 100% sure the trans is in neutral when you are assembling it? If not, it can bind.

Paw Paw
Reply With Quote
  #7  
Old 03-24-2014, 09:12 PM
Tdub's Avatar
ATM! Pro Class
 
Join Date: Dec 2002
Last Online: 01-22-2016 10:26 PM
Location: The OWB, Kentucky
Posts: 3,026
Default

Quote:
Originally Posted by PawPaw View Post
Are you 100% sure the trans is in neutral when you are assembling it? If not, it can bind.

Paw Paw
Although preferable, I don't know why it would make any difference????
Reply With Quote
  #8  
Old 03-25-2014, 09:05 AM
Randog Leader's Avatar
Pro Class
 
Join Date: Feb 2012
Last Online: 10-07-2015 11:35 AM
Location: Birmingham, AL
Posts: 1,643
Default

What you need to do is loosen the case bolts and just snug them to where they are barely tight. Now, get some feeler gauges and slide them in between the crank flywheels and the cases to figure out where it is sitting. Once you figure out which way it needs to move, just smack it lightly with a rubber mallet or dead-blow hammer on the crankshafts. Once it is centered, it should spin freely and you can torque the case bolts back down. I would also smack the tranny shafts as well. Just a tiny "love tap" can work wonders. Good luck!!

If you are really anal, you can use a puller to move the crank assembly but I jsut use the hammer.
Reply With Quote
Reply

  All Things Moto! Dirtbike Forums > Dirt Bike - ATV - Suspension Forums > 2-Stroke Dirt Bike Forums > 2-Stroke Dirt Bikes - Honda


Thread Tools


Similar Threads for: Crank Installed but seems tight. Help
Thread Thread Starter Forum Replies Last Post
need more speed in tight woods AL_CRF450 Dirt Bike Riding Tips 14 05-10-2013 05:00 AM
tight clutch control 713moto 2-Stroke Dirt Bike Forums 4 01-31-2008 06:13 AM
how tight do you tighten your spokes oppo General Discussion 5 05-28-2007 01:19 AM
How tight to have my chain? Rufes1 4-Stroke Dirt Bike Bike Forums 15 02-20-2005 07:52 PM
tight graphics crdemon General Discussion 10 08-27-2004 08:43 AM


All times are GMT -6. The time now is 06:47 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright ©2002-2017, JDub Consulting, Inc. All Right Reserved.