Checking Main Journal Alignment - Iveco VECTOR Series Technical And Repair Manual

18
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
Figure 23
Detail of couplings of central main journal.
Figure 24
Detail of couplings of crankpin.
Figure 25
Detail of couplings of rear — thrust main journal.
Figure 26
Base - April 2006

Checking main journal alignment

Figure 27
LIMIT POSITION
NORMAL POSITION
83496
MAIN JOURNAL
The tolerances allowed on the engine shaft pins are:
- ovality = 0.007 mm
- taper 0.012 mm
- main journal misalignment 0.10 mm
- crankpin misalignment ± 0.025 mm
- tolerance on the distances between the axis of the
crankshaft and the outside of each crankpin ± 0.10 mm
83495
Figure 28
83494
Diagram for checking the flywheel mating surface is orthogonal
and coaxial with the axis of rotation and main journals.
Turn the shaft:
- with the dial gauge at B no change greater than 0.04 mm
must be measured on the dial gauge;
- with the dial gauge at A no change greater than 0.03 mm
83493
must be measured.
VECTOR 8 ENGINES
0.025 LIMIT POSITION
0.025
CRANKPIN
8296
B
8297
Print P2D32V001E
A