Assembling The Piston Unit - Supports - Seals - Interpump Group Pratissoli SM Serie Manual De Reparación

2.2.4 Assembling the piston unit – supports – seals
To reassemble the various components, invert operations
paying special attention to the sequences listed below.
For tightening torque values and sequences, follow the
instructions contained in chapter 3.
Insert the upper bush into the liner.
For the correct axial positioning of the bush, use
the special tool (code 27921100 for SM14, code
27921200 for SM16, code 27921300 for SM18, code
27911200 for SM20, code 27911400 for SM22, code
27911500 for SM24) (pos. , Fig. 117 and Fig. 118).
Insert the H.P. pack (high pressure) (pos. , Fig. 118);
considering the slight interference between the seal and
the liner, to avoid damage we advise using the tool (code
27673200 for SM14, SM16 and SM18, code 27673300 for SM20,
for SM22 and for SM24) (pos. , Fig. 119).
The H.P. seal must be placed in the liner as
indicated in Fig. 121 and Fig. 122.
Before inserting them into their seats, the H.P.
seals must be lubricated with silicone grease
Type OKS 1110, following the operations listed
below:
The external diameter must only be slightly
greased;
On the internal diameter, grease must be applied
Fig. 116
paying great attention to filling all the pockets
between the sealing lips as shown in Fig. 122.
Fig. 117
Fig. 118
52
Piston working direction
Pockets to fill with
grease
Fig. 119
Fig. 120
Fig. 121