Checking The Connecting Rod - MOTO GUZZI V85 E4 Manual

Engine V85 E4
THE CRANKSHAFT IS NITRIDED AND CANNOT BE GROUND; IF WORN, TAPERED OR DEEPLY
SCORED, THE CRANKSHAFT MUST BE REPLACED
Specification
Main journal diameter on timing system side (WEAR LIMIT
VALUE)
Main bushing seat diameter on timing system side (MAXIMUM
WEAR VALUE)
Thickness for main bushing on timing system side (MAXIMUM
WEAR VALUE)
Main journal diameter on clutch side (MINIMUM WEAR VAL-
Main bushing seat diameter on clutch side (WEAR LIMIT VAL-
Total thickness for main bushing on clutch side (MINIMUM
WEAR VALUE)
Crankshaft thrust height (MAXIMUM WEAR VALUE)
Crankcase thrust height (MINIMUM WEAR VALUE)
Thickness of the thrust half-bearings on main bushing on clutch
side (MINIMUM WEAR VALUE)
Diameter of crank pin (MINIMUM WEAR VALUE)
The maximum parallelism deviation of the two crankshaft axes (connecting rod pin and main journals
on flywheel side and timing system side) should not exceed 0.02 mm (0.0009 in) at 40 mm (1.5748 in)
distance.

Checking the connecting rod

•
Check using a micrometer the measure of the connecting rod pin orthogonal axes an in the
working area of the small ends, check the measure of the small ends seats on the timing
system side and on the flywheel side.
•
Assemble the connecting rod without small ends and tighten the connecting rod screws to
the prescribed torque. Measure the outer diameter of small ends seats with a dial gauge
graduated in hundredths of a millimetre and the thickness of both small ends with a round
tip micrometer.
•
Check the bushings pressed in the small end of the connecting rod for notches due to seizing
or deep scoring; replace as required.
Specification
Diameter connecting rod head seat (MAXIMUM WEAR VAL-
Thickness of connecting rod head small ends (MINIMUM
WEAR VALUE)
Diameter of the small end with pressed and bored bushing
(MAXIMUM WEAR VALUE)
Assembling the connecting rod
•
Before assembly, take careful note of the reference markings and the correct direction of
installation.
C
RANKSHAFT CHECK
UE)
UE)
C
ONNECTING ROD CHECK
UE)
- L
IMIT VALUES
Desc./Quantity
40.004 mm (1.5750 in)
43.67 mm (1.7193 in)
1.805 mm (0.0711 in)
43.007 mm (1.6932 in)
47.142 mm (1.8560 in)
2.04 mm (0.0803 in)
24.81 mm (0.9768 in)
2.3 mm (0.0905 in)
2.31 mm (0.0909 in)
39.995 mm (1.5746 in)
Desc./Quantity
43.67 mm (1.7193 in)
1.807 mm (0.0711 in)
20.015 mm (0.7880 in)
Engine
ENG - 75