AND CONNECTING ROD LUBRICATION PRES-
SURE.
N.B.
THE HEAD LUBRICATION CHANNEL IS PRO-
VIDED WITH A SHUTTER JET; THIS GIVES A
"LOW PRESSURE" HEAD LUBRICATION; THIS
CHOICE WAS MADE TO REDUCE THE OIL
TEMPERATURE IN THE SUMP. THE JET
CLOGGING IMPAIRS THE HEAD LUBRICA-
TION AND THE TIMING MECHANISMS. A JET
FAILURE CAUSES A DECREASE OF THE MAIN
BUSHING AND CONNECTING ROD LUBRICA-
TION PRESSURE.
Inspecting the crankshaft plain bearings
- T
o obtain a good bushing lubrication it is necessary
to have both an optimal lubricating pressure (3,2
bar) and a good oil flow rate; the bushings must be
correctly positioned so as not to obstruct the oil
supply channels.
- The main bushings are comprised of two half-
bearings, one with holes and channels for lubrica-
tion whereas the other is solid.
- The solid half-bearing is intended to stand the
thrusts caused by combustion, and for this reason
it is arranged opposite the cylinder.
- To prevent obstructions in the oil feeding chan-
nels, the matching surface of the two half-bearings
must be perfectly perpendicular to the cylinder ax-
is, as shown in the figure.
- The oil feeding channel section is also affected
by the bushings driving depth compared with the
crankshaft axial clearance of the limiting surface.
- Check the inside diameter of the main bushings
in the three directions indicated in the diagram.
- Repeat the measurements for the other bushing
half. see diagram.
- There are three crankcase versions: with RED
main bushings, with BLUE main bushings and with
YELLOW main bushings.
XEVO 125 Euro 3
Engine
ENG - 53
Содержание XEVO 125 Euro 3
Страница 4: ......
Страница 6: ......
Страница 7: ...INDEX OF TOPICS CHARACTERISTICS CHAR ...
Страница 22: ...Characteristics XEVO 125 Euro 3 CHAR 16 ...
Страница 23: ...INDEX OF TOPICS TOOLING TOOL ...
Страница 35: ...INDEX OF TOPICS MAINTENANCE MAIN ...
Страница 51: ...INDEX OF TOPICS TROUBLESHOOTING TROUBL ...
Страница 58: ...Troubleshooting XEVO 125 Euro 3 TROUBL 8 ...
Страница 59: ...INDEX OF TOPICS ELECTRICAL SYSTEM ELE SYS ...
Страница 87: ...INDEX OF TOPICS ENGINE FROM VEHICLE ENG VE ...
Страница 93: ...INDEX OF TOPICS ENGINE ENG ...
Страница 149: ...XEVO 125 Euro 3 Engine ENG 57 ...
Страница 174: ...Engine XEVO 125 Euro 3 ENG 82 ...
Страница 175: ...INDEX OF TOPICS SUSPENSIONS SUSP ...
Страница 198: ...Suspensions XEVO 125 Euro 3 SUSP 24 ...
Страница 199: ...INDEX OF TOPICS BRAKING SYSTEM BRAK SYS ...
Страница 211: ...INDEX OF TOPICS COOLING SYSTEM COOL SYS ...
Страница 215: ...Locking torques N m Thermostat cover screws 3 4 XEVO 125 Euro 3 Cooling system COOL SYS 5 ...
Страница 216: ...Cooling system XEVO 125 Euro 3 COOL SYS 6 ...
Страница 217: ...INDEX OF TOPICS CHASSIS CHAS ...
Страница 235: ...INDEX OF TOPICS PRE DELIVERY PRE DE ...
Страница 239: ...INDEX OF TOPICS TIME TIME ...
Страница 242: ...Crankshaft CRANKSHAFT Code Action Duration 1 001117 Crankshaft Replacement Time XEVO 125 Euro 3 TIME 4 ...
Страница 261: ...Legshield spoiler FRONT SHIELD Code Action Duration 1 004020 Headlight frame Replace ment XEVO 125 Euro 3 Time TIME 23 ...
Страница 271: ...Seat SADDLE Code Action Duration 1 004003 Saddle Replacement XEVO 125 Euro 3 Time TIME 33 ...
Страница 279: ...Electric devices XEVO 125 Euro 3 Time TIME 41 ...
Страница 288: ...Windscreen WINDSHIELD Code Action Duration 1 004101 Windshield Replacement Time XEVO 125 Euro 3 TIME 50 ...
Страница 289: ...Stickers TRANSFERS Code Action Duration 1 004159 Plates Stickers Replace ment XEVO 125 Euro 3 Time TIME 51 ...