Checking Crankshaft - Iveco daily euro 4 Repair Manual

80
F1A ENGINE

Checking crankshaft

Figure 101
TOLERANCES
SHAPE SHAPE
DIRECTION DIRECTION
OF POSITION
OSCILLATION OSCILLATION
CLASS OF IMPORTANCE ASCRIBED TO THE PRODUCT CHARACTERISTICS
CRITICAL
IMPORTANT
SECONDARY
Figure 102
Base - March 2006
MAIN CRANKSHAFT TOLERANCES
TOLERANCE CHARACTERISTIC
Circularity
Cylindricality
Parallelism
Perpendicularity
Concentricity or coaxiality
Circular oscillation
Total oscillation
45066
NOTE The checks on the tolerances indicated in the
figures must be made after grinding the crankshaft
pins.
SYMMETRY BETWEEN MAIN JOURNALS AND CRANK-
PINS
1. Crank pins
2. Main Journals
3. Normal position.
After grinding, keep to the following:
- Round off the edges of deburring the holes for
lubrication of the main journals and crankpins.
D E
4
AILY URO
75299
SYMBOL
○
⊥
↗
↗↗
SYMBOL
E
⊕
⊝
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