75495
75497
85844a
Figure 213
Figure 214
Figure 215
Figure 216
Thoroughly clean the hydraulic tappets (2), lubricate them and
fit them in the cylinder head (3), positioning the rocker arms (1)
on the valves correctly.
Fit on the gasket (5).
Insert the two tools SP. 2264 (4) into the electro-injector seats
for subsequent centring of the overhead on the cylinder head.
Mount the overhead (1) together with the tools 99360614
(3) for the timing and tighten the fixing screws (2) to the
prescribed torque.
Take out the tools SP. 2264 (4).
Mount the fixed tightener (1) and tighten the fixing screw (2)
to the prescribed torque.
Mount the automatic tightener (4) without fully tightening
the fixing screw (3), max. closing torque 5 Nm.
Turn the automatic tightener (1) clockwise, positioning it as
shown in frame A.
Turn the timing belt (10) as shown in the figure observing the
precautions below.
Do not bend the timing belt. Arrows indicating the direction
of assembly of the timing belt on the engine are shown on
the back of the belt. The arrows must correspond to the
direction of rotation of the belt and the notches must
coincide with those on the pulley (7) and the gear (12).
X = Direction of movement of the tightener —
Y = Direction of rotation of the key.
108328
If the engine has run for a period equivalent to
≥
25,000 km, the toothed belt must be replaced with
a fresh one, no matter what its state of wear.
NOTE
Only for the intake valve distributing shaft with
full-section tapered shank.
If required to fit the timing belt (10) on the pulley
(7), remove tool 99360608 (8) and turn the pulley
(7) clockwise by no more than half a pulley tooth.
NOTE
Camshaft drive
On completing assembly, adjust the toothed pulley (7) to put
the section X of the belt under tension and tighten the screw
(9) to a torque of 90 Nm
Keeping the screw (2) stationary and using a suitable wrench
on the hexagon of the plate (3) of the tightener, turn it
anticlockwise to cover the reference hole (5) located on the
fixed portion of the tightener (see frame B).
In the above conditions, tighten the fixing screw (2) to a
torque of 36
± 4 Nm.
Tighten screw (9) to the torque values below:
-
screw (9) securing pulley (7) to the distributing shaft with
full-section tapered shank: 90 Nm;
-
screw (9) securing pulley (7) to the distributing shaft with
hollow-section cylindrical shank: 130 Nm.
Remove the tools 99360614 (6) and 99360615 (11) for the
timing.
Turn the engine in its direction of rotation by 8 turns to be
able to put the tools (6) and (11) back in to do the timing.
In these conditions, the notches of the timing belt (10) must
coincide with those of the pulley (7) and the gear (12).
F1A ENGINE
107
D
AILY
E
URO