Repair manual

- Lubricate the internal screws (1) with UTDM oil and
tighten them with a torque wrench (3) to a torque of
120 Nm, using tool 99395216 (4), to an angle o f 60°,
following the diagram below.
Set two journals of the crankshaft (2) parallel to the
longitudinal axis, a section of calibrated wire. Using
appropriate hooks and tackle, mount the crankcase base (1).
60559
47579
47578
47588
60593
Figure 36 Figure 37
Figure 38
Figure 39
Figure 40
- Remove the crankcase base.
The clearance between the main bearings and their journals
is measured by comparing the width taken on by the
calibrated wire (2) at the point of greatest crushing with the
graduated scale on the case (1) con t aining th e calibrated
wire.
The numbers on the scale give t he clearance of the coupling
in millimetres. If y o u find the clearance is not as required,
replace the bearing shells and repeat the check.
FRONT SIDE
DIAGRAM OF SEQUENCE FOR TIGHTENING THE SCREWS FIXING
THE BOTTOM CRANKCASE BASE TO THE CRANKCASE
Checking crankshaft end float
α
The en d float is checked by setting a dial gauge (1) 99395603
with a magnetic base on t he cran kshaft (2) as shown in th e
figure. If you find the clearance to be greater than as required,
replace the rear main bearing shells c arrying t he thru st
bearings and repeat the clearan ce check.
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
25
F3C CURSOR ENGINES
Print P2D32C005 E Base - May 2007