Perkins New 1000 Series, Workshop Manual, Page: 33 / 290

Workshop Manual, TPD 1350, issue 3 33
12
New 1000 Series
Rocker assembly
To remove and to fit 12-2
To remove
1 Remove the rocker cover , see operation 12-1 .
2 Release evenly and gradually the fasteners of the
rocker shaft brackets; begin with the end brackets and
move toward the centre. Remove the fasteners and
lift off the rocker assembly.
3 Remove the rubber oil seal (A) from the oil supply
connection or from the oil supply hole in the cylinder
head.
To fit
1 Fit a new rubber oil seal in the oil supply hole in the
cylinder head.
2 Check that the push rods fit correctly in the sockets
of the tappets. Fit the rocker assembly; ensure that
the oil supply connection is fitted correctly into the oil
seal. Check that the ends of the adjustment screws fit
correctly in the sockets of the push rods.
3 Fit the fasteners of the rocker shaft brackets and
tighten the fasteners evenly and gradually; begin with
the inner fasteners and work towards the end
fasteners. Tighten the fasteners evenly to the correct
torque according to the material of the rocker shaft
brackets:
Aluminium 40 Nm (30 lbf ft ) 4,1 kgf m.
Cast iron 75 Nm (55 lbf ft) 7,6 kgf m.
Sintered steel 75 Nm (55 lbf ft) 7,6 kgf m.
4 Check and adjust the valve tip clearances , see
operation 12-5 .
A
A0047
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