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9LD Workshop Manual _ cod. 1.5302.286 - 3° ed_rev. 02
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Disassembly / Reassembly
Valve timing without considering timing marks
Locate piston 1 (on flywheel side) at the top dead centre.
Position two small cylinders A of the same height onto the tappets.
Rotate camshaft stopping when cylinder 1 tappets are in overlap position
(intake open, exhaust closed).
By means of ruler B check that tappets are at the same height.
Engage camshaft gear with crankshaft gear.
CAMSHAFT TIMING
Fit camshaft gear by making timing mark 1 coincide with timing -
mark 2 on the crankshaft timing gear.
Tighten camshaft boll at 60 Nm.
Camshaft end play
End play should be 0.10÷0.25 mm; check by means of a dial gauge
pushing or pulling camshaft as required.
How to measure intake/exhaust cam height
A1 = 1 st cylinder intake cam
S1 = 1 st cylinder exhaust cam
A2 = 2nd cylinder intake cam
S2 = 2nd cylinder exhaust cam
Exhaust and intake cams feature the same height H.
H = 33.625 ÷ 33.650 mm
Replace camshaft if H is 0.1 mm below the given value.
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