Recommended Torque Figures; Standard Torque Figures For Metric Fasteners - Perkins 2800 Workshop Manual

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Recommended torque figures

Exceptions to these torque figures are given in the Workshop Manual where necessary.
Before any components are fitted to the engine, ensure that they are in a new or close to new condition. Bolts
or threads must not be worn or damaged. Components must be free from rust or other corrosion. Clean with
a non-corrosive cleaner if necessary. Do not lubricate the threads of fasteners. Rust preventative which has
been applied by the component supplier for shipping and storage is acceptable. Certain components may
require an application of a particular lubricant, details are given in the Workshop Manual where relevant.

Standard torque figures for metric fasteners

Thread size
metric
M6
M8
M10
M12
M14
M16
M20
M24
M30
M36
Thread size
metric
M6
M8
M10
M12
M16
M20
M24
M30
M36
Workshop Manual, TSD3450E, Issue 1
Metric nuts and bolts
Standard torque
12 +/- 3 Nm (9 +/- 2 lbf ft)
28 +/- 7 Nm (21 +/- 5 lbf ft)
55 +/- 10 Nm (41 +/- 7 lbf ft)
100 +/- 20 Nm (75 +/- 15 lbf ft)
160 +/- 30 Nm (120 +/- 22 lbf ft)
240 +/- 40 Nm (175 +/- 30 lbf ft)
460 +/- 60 Nm (340 +/- 44 lbf ft)
800 +/- 100 Nm (590 +/- 75 lbf ft)
1600 +/- 200 Nm (1180 +/- 150 lbf ft)
2700 +/- 300 Nm (2000 +/- 220 lbf ft)
Metric taperlock studs
Standard torque
8 +/- 3 Nm (6 +/- 2 lbf ft)
17 +/- 5 Nm (13 +/- 4 lbf ft)
35 +/- 5 Nm (26 +/- 4 lbf ft)
65 +/- 10 Nm (48 +/- 7 lbf ft)
110 +/- 20 Nm (80 +/- 15 lbf ft)
170 +/- 30 Nm (125 +/- 22 lbf ft)
400 +/- 60 Nm (300 +/- 44 lbf ft)
750 +/- 80 Nm (550 +/- 60 lbf ft)
1200 +/- 150 Nm (880 +/- 110 lbf ft)
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