Table of Contents
Advertisement
1
Ed. 05-2011
ENGINE OVERHAUL
Various crankshaft straightness check
Place the crankshaft between centres and take the measurement with a dial
gauge, checking that the detected value does not exceed 0.05 mm (0.00196
in.).
H06578
Bearings
Carefully wash bearings with mixture and dry with compressed air without turn-
ing them. Lightly lubricate and slowly turn the internal ring by hand; Rotation
unevenness, hard spots or excessive clearance shall not be found. It is good
practice to replace the bearings at each engine overhaul. The main bearings
shall always be removed in pairs and installed with the writing pointing out-
wards; to replace them it is necessary to heat up the crankcase halves in a fur-
nace at 90°÷100°C and remove the bearing using a driver tool and a hammer.
Install the new bearing (while the crankcase is still hot) perfectly squarely with
respect to the housing axis, using the special installer that only applies pres-
sure to the outer race. Let the parts cool down, and make sure that the bearing
is tightly secured to the crankcase half.
To replace the bearing onto the gear selector shaft, use puller part no. 8000
43720.
H06579
Make sure that the sector gear (1) is not loose; if necessary,replace the key, the
screw and the washer, and reassemble with Loctite 648.
H06580
G.13
3
3
Advertisement
Chapters
Table of Contents
