MOTO GUZZI Daytona RS, Руководство по ремонту

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94
CONNECTING RODS
When overhauling the connecting rods, carry out the
following checks:
■
the condition of the bushings and the clearance
between these and the gudgeon pins;
■
parallelism of the axes;
■
connecting rod bearings.
The bearings are of the thin shell type, in babbitt alloy
that cannot be adjusted; if there are any traces of
seizing or wear they must be replaced.
If the bearings are replaced it may be necessary to
mill the crankshaft pin.
Before grinding the crankshaft pin, it is advisable to
measure the pin diameter in correspondence to the
maximum wear (Fig. 11-81); this is to establish to
which undersize class the bearing should belong and
to what diameter the pin should be ground.
CARRILLO connecting rods
11-80
11-81
CRANKSHAFT PIN DIAMETER:
11-80/A
4.44 ÷ 4.57
19.95 ÷ 19.20
1.535 ÷ 1.544
47.130 47.142
22.0023
22.0026
23.825
23.775
47.0135 47.0132
23.825
23.775
bearings for connecting rod pin
dia. undersized by mm
NORMAL BEARING
(PRODUCTION) mm
0,254 0,508 0,762
from 1,535 1,662 1,789 1,916
to 1,544 1,671 1,798 1,925
Thicknesses of the connecting rod bearings
STANDARD DIA. UNDER SIZED 0.254 mm UNDER SIZED 0.508 mm UNDER SIZED 0.762 mm
44,008÷44,012 43,754÷43,758 43,500÷43,504 43,246÷43,250
Gudgeon pin and bushing coupling data
INTERNAL DIA. OF CLEARANCE BETWEEN
GUDGEON PIN DIA.
PRESSED AND GUDGEON PIN
mm
MACHINED mm AND BUSHING mm
22,0023 21,994
0,25÷0,32
22,0026 21,998
139,985 ÷ 140,015