Iveco N60 ENT M37, Техническое и ремонтное руководство, Страница: 167 / 194

70184
70185
70187
Figure 31
Figure 32
Figure 33
Figure 34
Refit the crankshaft (2).
Check the backlash between crankshaf main journals and the
relevant bearings as follows:
Tighten the pre-lubricated screws (1) in the following three
successive stages:
-
1
st
stage, with torque wrench to 50
±
6 Nm.
-
2
nd
stage, with torque wrench to 80
±
6 Nm.
Refit the main bearings that have not been replaced,
in the same position found at removal.
Fitting main bearings
Do not try to adapt the bearings.
Main bearings (1) are supplied spare with 0.250 — 0.500 mm
undersize on the internal diameter.
Clean accurately the main half bearings (1) having the
lubricating hole and fit them into their housings.
The second last main half bearing (1) is fitted with shoulder
half rings.
Check that gear toothing (1) is not damaged or worn,
otherwise remove it using the proper puller (3).
When fitting the new gear, heat it to 180
°
C for 10 minutes
in an oven and then key it to the crankshaft.
Finding journal clearance
Figure 35
-
clean accurately the parts and remove any trace of oil;
-
position a piece of calibrated wire (3) on the crankshaft
pins (4) so that it is parallel to the longitudinal axis;
-
fit caps (1), including the half bearings (2) on the relevant
supports.
70186
70161
Replacing oil pump control gear
OVERHAUL APRIL 2004 N60 ENT M37
8.167