Mauricio,

I have lots of experience  with this auto sampler (as 128). If you put a new 
cone in and it still leaks the  backing plate is most likely loose. The plate 
is the component that has the four  pins in it that the cone fits into. If you 
unbolt the next section behind the  cone it contains this part, you can 
remove and tighten. Inside this  section there are springs that keep the cone 
forward and if this section is  not tight the cone will not have the correct 
tension against the front of the  sampler to remain leak tight. I do not know of any 
pictures of this spring  section. Before I discovered it on my own I would 
put a dime behind the cone to  push it forward enough to seal. The part number I 
have for the Cone kit is  19004157 that includes Cone, O-rings, mirror and 
front lens. Of course if the  sample manifold is scratched (the part the cone 
seals against) you need to buy a  new one part number 35023009. If you need more 
information or want to send it in  to be rebuilt contact me.  


Mike Elefante
Elf Analytical Services Inc
732-922-8400