DIAGRAM FOR TIGHTENING THE REAR TIMING
GEAR CASE FASTENING SCREWS
Refit the case (1) to the engine block.
Screw the fastening screws in the same position found at
removal and tighten them to the following torque values in
the sequence shown in the figure:
Screws M12
65 - 89 Nm
Screws M8
20 - 28 Nm
Screws M10
42 - 52 Nm
IVECO N. 2992545 SEALANT APPLICATION AREAS
Clean accurately the timing gear case (1) and the engine
block.
Perfect seal is only obtained by cleaning accurately the
surface to seal.
Smear the case with IVECO N. 2992545 to obtain a bead of
few mm diameter.
It shall be uniform (no clots), without air bubbles, thin areas
or discontinuities.
Any imperfection shall be corrected as soon as possible.
Avoid to use excess material to seal the joint.
Excessive sealant could come out from joint sides and cause
lubricant passage clogging.
After applying the sealant, the joint shall be assembled
immediately (10 — 20 minutes).
70207
70208
70209
70210
Figure 99
Figure 100
Figure 101
Figure 102
If a different clearance value is found, replace the half bearings
and repeat the check.
Once the specified clearance has been obtained, lubricate
the main half bearings and fit them by tightening the
connecting rod cap fastening screws to the specified torque.
Once connecting rod-piston assemblies refitting is over, use
dial gauge 99395603 (1) fitted with base 99370415 (2) to
check piston (3) protrusion at T.D.C. with respect to the top
of the engine block.
Protrusion shall be 0.28 — 0.52 mm.
!
Before the final fitting of the connecting rod cap
fastening
screws,
check
that
their
diameter
measured at the centre of the thread length is not
< 0.1 mm than the diameter measured at approx. 10
mm from screw end.
Check manually that the connecting rods (1) are sliding
axially on the output shaft pins and that their end float,
measured with feeler gauge (2) is 0.10 — 0.33 mm..
Checking piston protrusion
Timing gear case
E
URO
C
ARGO
T
ECTOR
12-26 t
62
ENGINE F4 AE 0481
Base - February 2003