[Ducati] 748 Rockers

[Ducati5555 at aol.com]

Hi Barry,
I just replaced all my stock half rings with MBP retainers, so the  procedure 
is fresh in my mind.  Actually its quite simple.  Just pull  out the opening 
rocker on the right side.  To do this you must have a 5 mm  puller tool.  You 
pull out the spindle that holds the opener rocker.   At the same time you are 
pulling stick you fingers in and hold the rocker so it  wont fall down.  If it 
does slip out of your fingers, use a strong magnet  to grab it and pull it 
out.  Once the opening rocker is out on the right  side,  undo the two 6 mm 
bolts that hold the cam into the head and pull the  cam out.  You may have to 
rotate it a bit to get it out.  With the cam  out you can easily check all the 
rocker surfaces.
 
Installation is a bit trickier.  You want to intall the opening rocker  
partially on the right side.  Line up the rocker hole with the hole in the  head.  
Slip the rocker pin through the hole and into the rocker.  Tap  the rocker pin 
slightly just so the rocker is held in position.  Do not tap  the rocker pin 
all the way in.  Let the rocker rest to the side of the  opening shim, not on 
top of it.  If you seat the rocker pin all the way in  at this time, you will 
have a hard time getting the cam back in.  Now  install the cam.  Rotate the 
lobes the correct orientation to get the cam  past all the rocker arms.  Once 
installed, then lift the opening rocker  with your finger while at the same 
time tapping the spindle.  This will  move the rocker over on top of the shim.  
The cam should be in the position  of TDC when the belts are on.  Be careful 
that the rocker is indeed over  the top of the shim while tapping the spindle.  
If you dont seem to have  clearance, check the position of the cam.  If you 
cant push the cam  all the way in cause its hitting on the left side opening 
rocker, you can take  the left side cam cover off.  It  will let the cam deflect 
just a bit  to allow the cam to be pushed in all the way.  Then put the cover 
back  on.  Make sure you line up the oil hole in the cam cover with the hole 
in  the head bearing.  (Dont put the cover in 180 degrees to what it should  
be).  
 
Hope this helped you.  
 
Mike Guidera
_www.emsduc.com_ (http://www.emsduc.com) 
99 ST4
98 96
97 916
94 M944