Assembly Of Mechanical Parts - Pratissoli MK Serie Manual De Reparación

2.1.2

Assembly of mechanical parts

Proceed with assembly following the reverse order indicated
in par. 2.1.1.
The correct sequence is as follows:
Assemble the red to the piston guide.
Insert the piston guide rod into its seat on the piston guide
(pos. , Fig. 38) and join the rod to the piston guide by means
of the 4 M6x20 screws (pos. , Fig. 39).
Fig. 39
Lock the piston guide in a vice with the aid of a special tool
and calibrate the screws with a torque wrench (pos. , Fig. 40)
as indicated in chapter 3.
Fig. 40
Insert the con-rod in the piston guide (pos. , Fig. 36) and
then insert the spindle (pos. , Fig. 35). Fit on the two Seeger
rings with the special tool (pos. , Fig. 34).
Separate the caps from the half supports. Proper coupling can
be verified by the numbering on the side (pos. , Fig. 33).
After having checked casing cleaning, proceed with assembly
of half support-piston guide unit inside casing rods (pos. ,
Fig. 32).
Block the three units with the use of special tool code
27566200 (pos. , Fig. 31).
Pre-assemble the bearing, PTO side, on the shaft to the end
stroke (pos. , Fig. 41) and mount the bearing on the opposite
side on the casing (pos. , Fig. 42).
Fig. 38
Insert the shaft (pos. , Fig. 29) until the pre-assembled
bearing is flush with the edge of the casing (pos. , Fig. 43).
48
Assembly has been carried out properly if the
con-rod foot, piston guide and spindle rotate
freely
Insertion of the half support-piston guide unit in
the casing must be made with the half bearings
set in the direction in which numbers are visible
from above.
The bearing in Fig. 42 has a tapered internal
ring. Check that the taper goes from the outside
inwards to allow inserting the bush.
Fig. 41
Fig. 42