Torque Specifications - Westerbeke 40NA Operator's Manual

TORQUE SPECIFICATIONS
The following torque tensions apply when the components are lightly oiled before assembly.
Lb-ft
Kg-m
N-m
Cylinder Head Nuts
60
8.3 81
Connecting Rod Cap Bolts
42
5.8 57
*
Main Bearing Cap Bolts
85
11.75 115
Flywheel Bolts
60
8.3 81
Idle Gear Hub Bolts
36
5.0 49
Crankshaft Pulley Bolt
150
20.7
203
Injector Securing Nuts
12
1.7 16
Fuel High Pressure Pipe Nuts
15 2.1 20
Alternator Pulley Nut
30 4.1
41
Thermostat Housing
10 1.38
13
Thermostat Insulating Adapter
10
1.38 13
*
The
tab
and shim washers may be discarded where they were once used on earlier models, but the bolts
must be tightened to the torque specification indicated.
All threads used, except those used to manufacture the basic engine, are of the Unified Series and American
Pipe Series. The crankshaft and the pulley retaining bolts are threaded 5/8- inch Unified National Fine (U.N.F.
18 threads per inch).
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Westerbeke Diesel Engines
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