MOTO GUZZI 1200 SPORT 4V Service Station Manual page 155

1200 SPORT 4V
Inspecting the crankshaft components
Check the surfaces of the main journals; if they are
scored or oval-shaped, reface them (observing the
undersize charts), and replace the main bushing/
s.
Reference (1) indicates the position where the col-
oured reference is applied to select diameter (B).
Reference (2) indicates the position where the col-
oured reference is applied to select balancing.
Specification
Diameter of crankshaft main journal, timing system side
Inside diameter of crankshaft bushing, timing system side
Clearance between bushing and main journal (timing system
Specification
Diameter of crankshaft main journal, clutch side
Inside diameter of crankshaft bushing on clutch-side flange
Clearance between bushing and main journal (clutch side)
Specification
'Blue' bushing half-shell regular production
'Red' bushing half-shell regular production
Specification
Crankshaft selection colour (2) brown
Crankshaft selection colour (2) green
Crankshaft selection colour (2) black
Checking the connecting rod
When examining the connecting rods, check that:
•
Bushing conditions and bushings-pins clearance;
•
Shaft parallelism;
•
Connecting rod bearings.
These are thin shell bearings, anti-friction alloy that does not allow for any adaptation; replace them
immediately if seizing or wear marks are found.
Revente Interdite - Revendita Vietata - Resaling Forbiden - Wiederverkauf Verboten
CRANKSHAFT SEAT (TIMING SYSTEM SIDE)
side)
CRANKSHAFT SEAT ( CLUTCH SIDE)
CRANKPIN DIAMETER (B)
BALANCING SELECTION COLOURS (2)
Desc./Quantity
37.975 - 37.959 mm (1.49507 - 1.49444 in)
38.016 - 38.0 mm (1.49669 - 1.49606 in)
0.025 - 0.057 mm (0.00098 - 0.00224 in)
Desc./Quantity
53.97 - 53.961 mm (2.12480 - 2.12444 in)
54.019 - 54.0 mm (2.12673 - 2.12598 in)
0.030 - 0.058 mm (0.00118 - 0.00228 in)
Desc./Quantity
44.008 ÷ 44.014 mm (1.73259 ÷ 1.73283 in)
44.014 ÷ 44.020 mm (1.73283 ÷ 1.73307 in)
Desc./Quantity
Type 1 to be used with brown connecting rods.
Balance with a 1558 g (54.96 oz) +/- 0.25% weight fitted on the
crankpin (B). Maximum imbalance allowed for each shoulder:
2 g (0.07 oz).
Type 2 to be used with green connecting rods.
Balance with a 1575 g (55.56 oz) +/- 0.25% weight fitted on the
crankpin (B). Maximum imbalance allowed for each shoulder:
2 g (0.07 oz).
Type 2 to be used with black connecting rods.
Balance with a 1592 g (56.16 oz) +/- 0.25% weight fitted on the
crankpin (B). Maximum imbalance allowed for each shoulder:
2 g (0.07 oz).
Engine
ENG - 155