Pratissoli KF5M Serie Manual De Reparación página 28

2.2.5.2 Reassembly
To replace the cylinder and the head, proceed as follows:
A) Insert the seals (Fig. 35) and the cylinders (Fig. 36) in the
cylinder seat on the head.
B) Assemble the head. Values of the tightening torques and
sequences are contained in chapter 3.
3 COMPONENT TIGHTENING TORQUE
Description
Cover Fixing Screw
Piston guide rod fixing
screws
Piston Fixing
Con-Rod Cap Fixing Screw
Head fixing nut - Cover
Head Fixing Screw
Stud Bolt M12
Screw Fix. Cov. Valves - frt.
Stud Bolt M7
Piston Spacer
Screw Fix. Lifting Bracket
Plug G 1/2"
Plug G 1"
Fig. 35
* The con-rod cap fixing screws must be tightened
respecting the phases indicated on page 20.
** The head fixing screws and nuts exploded view pos. 29
must be tightened with a torque wrench, lubricating
the threaded shank, respecting the order shown in the
diagram in Fig. 38.
*** The cover fixing screws and nuts exploded view pos.
21 and 30 must be tightened with a torque wrench,
lubricating the threaded shank, respecting the order
shown in the diagram in Fig. 38.
**** The stud bolt M7 exploded view pos. 27, is to be
mounted on the spacer exploded view pos. 22 with
Loctite 243 code 12006400.
Fig. 36
28
Exploded Material Tightening
view pos. torque Nm
40 8.8 10
65 A2-70 10
13 STAINLESS 20
STEEL A2
47 12 R 30*
30 8.8 80**
29 8.8 80**
31 8.8 80**
21 8.8 80***
27 C 40 20****
22 STAINLESS 20
STEEL
46 8.8 40
16 Nickel- 40
Plated Brass
9 Zinc-Plated 100
Steel
Fig. 37
Fig. 38