- 44 -
4
98
99
100
Camshaft timing
Fit camshaft gear by making timing mark
2
coincide with timing marks
1
.
Tighten camshaft bolt at 250 Nm.
Disassembly / Reassembly
Valve timing check
Check using an index plate suitable for reading angles, integral with
the crankshaft. Readings are taken in degrees.
Set valve clearance at 0,65 ÷ 0,70 mm (after checking restore the va-
lue al 0,15 ÷ 0,20 mm). Set dial gauge on intake valve to a zero value;
by rotating the driving shaft according to its direction of rotation you
can measure
α
(intake valve opening advance referred to top dead
centre
PMS
) and
ß
(intake valve closing delay referred to bottom
1
dead centre).
Follow the same procedure for exhaust valves checking
γ
(exhaust
valve opening advance) and
δ
(exhaust valve closing delay).
Valve timing without considering timing marks
Locate piston
1
(on flywheeI side) at the top dead center. Position two
small cylinders
A
of the same height onto the tappets.
Rotate camshaft stopping when cylinder
1
tappets are in overlap posi-
tion (intake open, exhaust closed).
By means of ruler
B
check that tappets are at the same height.
KD Workshop Manual_cod. ED0053029350_
1° ed
_ rev.
00
Summary of Contents for KD 626/3
Page 1: ...KD 625 3 626 3 WORKSHOP MANUAL...
Page 21: ...21 3 KD Workshop Manual_cod ED0053029350_1 ed_ rev 00...
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