At each disassembly, the HP packing (Fig. 39)
must be replaced.
2.2.4
Reassembly of the piston unit – supports – seals
To reassemble the components, invert the operations
described above, paying attention to the sequences listed
below; for the fastening torque values and phases, observe
the instructions given in paragraph 3.
-
Introduce in the H.P. seals support, the head ring (pos. ,
Fig. 40) and then the H.P. (high pressure) packing;
considering the slight interference between the seal and
the H.P. seals support, to avoid damage we advise using a
plastic pad (pos. , Fig. 41 and Fig. 42).
7
Fig. 37
Fig. 38
The H.P. seal must be placed in the support as
indicated in Fig. 41 and Fig. 43.
Fig. 39
Before inserting them into their seats, the H.P.
seals must be lubricated with silicone grease Type
OKS 1110, following the operations listed below:
A) The external diameter must only be slightly
B) On the internal diameter, grease must be applied
26
greased;
paying great attention to filling all the pockets
between the sealing lips as shown in Fig. 45.
1
Fig. 40
1
Fig. 41
1
Fig. 42