Operation 3-7 To Check And To Adjust (Six Cylinder Engines) - Perkins New 1000 Series Workshop Manual

New 1000 Series
To check and to adjust (six cylinder engines)
Notes:
l 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).
l The sequence of valves from number 1 cylinder is shown in the table below. Number 1 cylinder is at the
front of the engine.
l The adjusting screws on early engines have a screwdriver slot, later engines have a female Torx drive. Both
types are interchangeable.
1 Rotate the crankshaft in the normal direction of rotation until the inlet valve (B11) of number 6 cylinder has
just opened and the exhaust valve (B12) 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 6 cylinder. Then check /
adjust the clearances of the valves (B9 and B10) of number 5 cylinder.
3 Set the valves (B7 and B8) of number 4 cylinder. Then check / adjust the clearances of the valves (B5 and
B6) of number 3 cylinder.
4 Set the valves (B1 and B2) of number 1 cylinder. Then check / adjust the clearances of the valves (B11 and
B12) of number 6 cylinder.
5 Set the valves (B9 and B10) of number 5 cylinder. Then check / adjust the clearances of the valves (B3 and
B4) of number 2 cylinder.
6 Set the valves (B5 and B6) of number 3 cylinder. Then check / adjust the clearances of the valves (B7 and
B8) of number 4 cylinder.
Cylinder
and
Valve number
Valve
I = Inlet
E = Exhaust
A
Workshop Manual, TPD 1350E, Issue 4
This document has been printed from SPI². Not for Resale
1 2
1 2 3 4
I E I E
B
A0049A
3 4
5 6 7 8
I E I E
1 2 3 4 5 6 7
3
Operation 3-7
5 6
9 10 11 12
I E I E
8 9 10 11 12
A0028
47