5 +0+0.012mm
Intake guide: Wear limit
5.022 mm
- If the width of the impression on the valve seat or the diameter of the valve guide exceed the specified
limits, replace the cylinder head.
- Check width of the impression on the valve seat «
V
»
Characteristic
Wear limits:
Max. 1.6 mm.
Inspecting the valves
- Measure the diameter of the valve stems in the
three positions indicated in the diagram.
- Calculate the clearance between the valve and
the valve guide.
Characteristic
Minimum diameter allowed: Intake
4.970 mm
Minimum admissible diameter drainage
4.960 mm
Fitting clearance
Standard clearance: Intake
0.015 ÷ 0.042 mm
Standard clearance: drainage
0.025 ÷ 0.052 mm
- Check that there are no signs of wear on the
contact surface with the articulated register termi-
nal.
- If the sealing surface on the valves is wider than
the specified limit, damaged in one or more points
or curved, replace the valve with a new one.
Characteristic
Valve standard length: Intake
70.1 mm
Valve standard length: drainage
69.2 mm
Fitting clearance
Max. clearance allowed: Intake
0.052 mm
Max.
clearance allowed: drainage
0.062 mm
- If the checks above give no failures, you can use the same valves. For best sealing results, it is
advisable to grind the valves. Grind the valves gently with a fine-grained lapping compound. During
Engine
ET4 50
ENG - 92
Содержание ET4 50
Страница 1: ...WORKSHOP MANUAL 633367 ET4 50 ...
Страница 4: ......
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 ...