Operation 3-14 To Fit (Engine Types Ar And As) - Perkins New 1000 Series Workshop Manual

New 1000 Series
To fit (engine types AR and AS)
Special requirements
Description
Angle gauge, to tighten cylinder head
setscrews
Note: See Operation 3-13 for AJ to AQ and YG to YK engine types.
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 joint in the correct position when the cylinder head is fitted.
Cautions:
l To prevent damage to the cylinder head joint, ensure that the location pins are pressed in the cylinder block
before the cylinder head is fitted.
l The cylinder head joint must be fitted without jointing compound.
2 Put the cylinder head joint 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 M10 guide studs (A1) in
positions 16 and 21 (B). 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. The four 1/2 UNF setscrews are fitted in positions 2, 8, 13 and 18,
refer to (B).
5 Gradually and evenly tighten all of the setscrews to 45 Nm (33 lbf ft) 4,5 kgf m in the sequence shown in (B).
6 Repeat step 5 to ensure that all the setscrews are tightened to the correct torque.
7 Gradually and evenly tighten the four 1/2 UNF setscrews, to 110 Nm (80 lbf ft) 11,1 kgf m in the sequence
2, 8, 13 and 18, shown in (B).
8 Repeat step 7 to ensure that these setscrews are tightened to the correct torque.
1
3
A
Workshop Manual, TPD 1350E, Issue 4
This document has been printed from SPI². Not for Resale
Special tools
Part number
21825607
2
M 18
19
L M 9
M 20 M 10
21
S
S S
22
B
A0404
Operation 3-14
Continued
M
M 8 M 2
M 3
M 1
M 7 M 4
S S S
S
11 12 6 5
17
3
13
14
L
15 M
S
16
A0053
61