Tuesday, 1 May 2012

CAGIVAMITO 125 TOP END REMOVAL

SHORT VIDEO PICTORIAL (BASIC)

CAGIVA MITO BLOG INDEX ( CLICK FOR MORE POSTS ON THE CAGIVA MITO 125 )

Cagiva mito cylinder barrels post here

Buy Mitaka Barrels here

Buy Oem barrels here

or Better still have your old barrel Re nikosiled here


removing the top end and replacement it very easy to do and anyone with baic tools can do this is a day or 2 after youve done it a few times (which you will if you keep you mito for long in one afternoon)




remove the five bolts holding down the head


piston to the BDC , then undo the four bolts situated on each corner .

Now the cylinder itself is ready to be removed ,try to avoid small parts falling into the crank case if you do engine removal and swilling out with old diesel will be required
 , lift the cylinder off the crank case making sure its going up straight and not at an angle, lift it about 25mm and stuff a rag into the crank case tightly t avoid any debree falling into the crank case.

9. Once the cylinder is out of the way you can begin to remove the C clips which are are at the side of the piston (set in about 5mm) once these are gone remove the  piston pin / gudeon pin this can be tight so be carful when tapping and removing it brace piston if tapping is required once pin is  removed, the piston will come off the con rod and you can remove the little end bearing.


Put a new little end bearing in the conron (oil it before hand with 2 stroke oil, also oil the top of the con rod, now oil the new wrist/gudeon/piston pin and place that inside the bearing. Next put the piston rings onto the piston, Every piston ring will have a stamp mark near the ring gap, This MUST be installed facing upwards. Also, locate the "locating pin" in the piston groove. The ring gap will go here, do this for both piston rings.


Now your piston is ready to go on the conrod, there will be an arrow ontop of the piston, this faces the exhaust port (forwards facing on most bikes), place the pison over the con rod end and get the piston "holes" inline with the wrist pic which is alsread installed, once you have it inline place the C clips inside the "holes" so it locks the piston to the conr rod and wrist pin, once there in fully make sure the gaps in the clips arent near the little groove or indentation in the wrist pin/piston holes else they may fall out.



Oil the piston with 2 stroke oil, especially around the rings. Now get your new cylinder or reconditoned one and lube the bore with 2 stroke. Now that your cylinder is ready place your base gasket onto the crank case cover (i would you the medium thickness one but this can be altered for squish readings when more advanced ) get your cylinder ready , hold the piston rings tight so they compress and slide the cylinder onto the piston, very slowly at first it will be diffuclt, once you get the rings into the bore it will slide straight on , once its on just work your way from step 6 to 1 in reverse order.


see very very easy











cagiva barrel , cylinder head
cagiva mito engine rebuild
cagiva mito engine 

Buy Mitaka Barrels here

Buy Oem barrels here

or Better still have your old barrel Re nikosiled here





Checking Squish Clearance Video 


                                          




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