Perkins New 1000 Series, Руководство по ремонту, Страница: 35 / 290

Workshop Manual, TPD 1350, issue 3 35
12
New 1000 Series
Valve tip clearances
To check and to adjust 12-5
Notes:
! The valve tip clearance is measured between the
top of the valve stem and the rocker lever (A). With
the engine hot or cold, the correct clearances are
0,20 mm (0.008 in) for the inlet valves and 0,45
mm (0.018 in) for the exhaust valves. The valve
positions are shown at (B).
! The sequence of valves from number 1 cylinder is
shown in the table below. Number 1 cylinder is at
the front of the engine.
Four cylinder engines
1 Rotate the crankshaft in the normal direction of
rotation until the inlet valve (B7) of number 4 cylinder
has just opened and the exhaust valve (B8) of the
same cylinder has not closed completely. Check the
clearances of the valves (B1 and B2) of number 1
cylinder and adjust them, if necessary.
2 Set the valves (B3 and B4) of number 2 cylinder as
indicated above for number 4 cylinder. Then check /
adjust the clearances of the valves (B5 and B6) of
number 3 cylinder.
3 Set the valves (B1 and B2) of number 1 cylinder.
Then check / adjust the clearances of the valves (B7
and B8) of number 4 cylinder.
4 Set the valves (B5 and B6) of number 3 cylinder.
Then check / adjust the clearances of the valves (B3
and B4) of number 2 cylinder.
Cylinder
and
Valve number
1 2 3 4
1 2 3 4 5 6 7 8
Valve
I = Inlet
E = Exhaust
I E I E I E I E
A
A0049A
1 2 3 4 5 6 7 8
B
A0050
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