- Fit the oil scraper ring starting from the spring,
taking care that the spring ends do not superim-
pose. Fit the two piston rings so that their gaps and
that of the oil scraper ring are never aligned.
- Fit the 2nd sealing ring with the identifying letter
«
T
» facing towards the piston crown.
- Fit the 1st sealing ring with the reference letter
«
T
» facing towards the piston crown.
- Offset the ring gaps by 120° to each other as
shown in the figure.
- Lubricate the components with engine oil.
N.B.
IN ORDER TO OBTAIN A GOOD BEDDING, THE 2 SEALING
PISTON RINGS ARE MADE OF CONE SHAPED CONTACT
SECTION TO THE CYLINDER. AS A RESULT IT IS IMPOR-
TANT TO RESPECT THE FITTING INSTRUCTION TO AS-
SEMBLY THE RINGS WITH THE "T" MARK FACING
UPWARDS.
Refitting the cylinder
- Fit the base gasket of the chosen thickness, pre-
viously determined.
- Fit the cylinder as shown in the figure
- The piston can be kept out of the housing plane
using the appropriate tool.
N.B.
BEFORE FITTING THE CYLINDER, CAREFULLY BLOW
OUT THE LUBRICATION DUCT AND OIL THE CYLINDER
BARREL.
Specific tooling
020288Y
Fork to assemble piston on cylinder
If the four cylinder stud bolts should be replaced in this kind of engine, it is necessary to tighten the
head nuts strictly following the procedure below.
ET4 50
Engine
ENG - 89
Содержание ET4 50
Страница 1: ...WORKSHOP MANUAL 633367 ET4 50 ...
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Страница 6: ...INDEX OF TOPICS CHARACTERISTICS CHAR ...
Страница 16: ...INDEX OF TOPICS TOOLING TOOL ...
Страница 24: ...INDEX OF TOPICS MAINTENANCE MAIN ...
Страница 33: ...494929Y Exhaust fumes analyser 020331Y Digital multimeter ET4 50 Maintenance MAIN 33 ...
Страница 34: ...INDEX OF TOPICS TROUBLESHOOTING TROUBL ...
Страница 40: ...INDEX OF TOPICS ELECTRICAL SYSTEM ELE SYS ...
Страница 56: ...INDEX OF TOPICS ENGINE FROM VEHICLE ENG VE ...
Страница 58: ...INDEX OF TOPICS ENGINE ENG ...
Страница 120: ...INDEX OF TOPICS SUSPENSIONS SUSP ...
Страница 130: ...INDEX OF TOPICS BRAKING SYSTEM BRAK SYS ...
Страница 136: ...INDEX OF TOPICS CHASSIS CHAS ...
Страница 144: ...INDEX OF TOPICS PRE DELIVERY PRE DE ...
Страница 148: ...INDEX OF TOPICS TIME TIME ...
Страница 150: ...Crankcase CRANKCASE Code Action Duration 1 001133 Engine crankcase replace Crankshaft Time ET4 50 TIME 150 ...
Страница 184: ...BRAKE LEVER Code Action Duration 1 002002 Shoes Rear brake pads Replace ment Time ET4 50 TIME 184 ...