Perkins New 1000 Series, Workshop Manual, Page: 41 / 290

Workshop Manual, TPD 1350, issue 3 41
12
New 1000 Series
To fit
(Engine types AJ to AQ and YG to YK)
See page 45 for AR and AS engine types
Special tools:
Angle gauge, to tighten cylinder head setscrews,
MS.1531
1 Clean the bottom face of the cylinder head and the
top face of the cylinder block. Ensure that there is no
debris in the cylinder bores.
Note: The engines have two location pins (A3), one
at each end of the cylinder head, pressed into the
cylinder block to hold the cylinder head and cylinder
head gasket in the correct position when the cylinder
head is fitted.
Cautions:
! To prevent damage to the cylinder head gasket,
ensure that the location pins are pressed in the
cylinder block before the cylinder head is fitted.
! The cylinder head gasket must be fitted without
jointing compound.
2 Put the cylinder head gasket in position; It is
stamped "FRONT TOP" (A2) for correct assembly.
3 To ensure the cylinder head is fitted into the correct
position, fit two suitable 1/2 UNF guide studs (A1) or
(B1) in positions 16 and 21 (
page 40 /B) or positions
25 and 30 ( page 40 /A). Put the cylinder head in
position. Ensure that the two location pins are fully
engaged in the cylinder head.
4 Lightly lubricate the threads of the cylinder head
setscrews and the thrust faces of the setscrew heads.
Engage some of the setscrews in their correct
positions and remove the guide studs. Engage the
remainder of the setscrews in their correct positions.
5 Gradually and evenly tighten the setscrews to 110
Nm (80 lbf ft) 11,1 kgf m in the sequence shown in
(
page 40 /A or B).
6 Repeat paragraph 5 to ensure that all the setscrews
are tightened to the correct torque.
Continued
A0404
A
2
1
3
B
A0057
1
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