91
18-10-2004
18-10-2004
00
REG. CODE
1-5302-662
MODEL N°
51092
DATE OF ISSUE
REVISION
ENDORSED
COMPILER TECO/ATI
DATE
289 290 291
292 293 294
C
D
XI
E
Cylinder head installation - Reassembly
Fit the cylinder head and after lubricating washers, studs and the 4 nuts, in order to carry out a perfect locking act as
follows, by bearing in mind that for each tightening stage the sequence pointed out below must be performed according to
the diagram in fig. 290.
1) Torque the four nuts with a locking torque of 5 N.m.
2) Torque to 40 N.m..
3) Carry out a 90° rotation (1/4 turn).
4) Complete the torquing with a second rotation of 90° (1/4 turn).
Cylinder-cylinder head securing studs
to avoid progressive permanent elongation from repeated torquing operations it is necessary to replace the studs every
three dismantling and reassembly operations of the cylinder head. If in doubt, replace them every time.
Camshaft and tappet support
Assemble the camshaft support on the head (fig. 292) by tightening the bolts to a 20÷22 Nm (fig. 293) torque, lubricate the
camshaft supports as well as the intake and exhaust tappet seats “C” and “D” supports (fig. 292).
Fit the tappets fitted with adjustment shims in their seats “C” and “D”” (fig. 294).
Place the gasket “E” (fig. 294).
- Tappet seat diameter 35,000÷35,025
- Normal tappet external diameter 34,975÷34,995
- Seat-tappet : assembly gap 0,005÷0,050
DISASSEMBLY/REASSEMBLY
To Next Page
Loading...
