Repair manual

MEASURING CRANKPINS
When grinding, pay the utmost attention to the values of the
unions of the main jou rnals and of the crankpins given in
Figure 19 and Figure 20.
47535
47536
Figure 21
Figure 22
MEASURING THE MAIN JOURNALS
Meas uring the main journals and crankpins
Before grinding the journals, use a micrometric gauge (1) to
measure the journals of the shaft (2) and establish, on the
basis of the undersizing of the spare bearing shells, to what
diameter it is necessary to reduce the journals.
It is advisable to note the measurements in a table
(Figure 22).
All the main journals and crankpins should always be
ground to the same undersizing class so as not to
alter the balance of the shaft.
Figure 23
Table for noting down the measurements of the main journals and crankpins of the crankshaft.
MAIN JOURNALS
36061
∅ MIN.
∅ MAX.
∅ MIN.
∅ MAX.
CRANKPINS
NOTE
16
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
F3C CURSOR ENGINES
Base - May 2007 Print P2D32C005 E