Pratissoli MK Serie Manuel De Réparation page 74

Now assemble the O-ring (pos. , Fig. 168) on the packing
head ring and position it in the seat on the head.
Mount the oil seal in the oil seal cover (pos. , Fig. 169) using
a buffer code 27910900.
Fig. 166
Position the O-ring (pos. , Fig. 170) in the seat of the oil seal
cover and insert the assembly mounted in the casing into the
seat (pos. , Fig. 171).
Fig. 167
Fig. 168
74
Fig. 169
Fig. 170
Fig. 171