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Socket Size
Cylinder head bolt
M 10 (14mm)
54 - 61
7.5 - 8.5
M8(12mm)
14 - 22
2.0 - 3.0
Rocker shaft hold down bolts
M 8 (12 mm)
II - 16
1.5 - 2.2
(See the "Torquing Cylinder Head Bolts" section of this manual.)
Crankshaft pulley nut
M 16 (24mm)
72.3 - 86.7
10-12
Connecting rod cap-nut
M8 (14 mm)
23 - 25
3.2 - 3.5
Oil pan drain plug
M18
36.2 - 43.4
5.0 - 6.0
(All models)
Oil filter
8.0 - 9.4
1.1-1.3
(All models)
(or tighten firmly by hand)
Delivery valve holder
M 16 (17 mm)
25.3 - 28.2
3.5 - 3.9
(Injection pump)(All models)
Injector nozzle mounting
M 20 (21 mm)
36.2 - 43.4
5.0 - 6.0
(All models)(To Engine)
Fuel solenoid locknut
M30 (36 mm)
28.9 - 36.2
4.0 - 5.0
Glow plug
M 10 (12 mm)
10.8 - 14.5
1.5 - 2.0
(All models)
Injector spray pressure
140
±
10/0 kglcm 2 (1990 psi
±
140/0)
Cylinder compression pressure
28 kglm 2 at 280 rpm (398 psi)
Tightening Torque for Common Bolts and Nuts
Designation of screw
Head Mark
thread
4
7
10
M6
0.3 - 0.5
0.8 - 1.0
1.0 - 1.3
M8
1.0 - 1.3
1.5 - 2.2
2.5 -3.5
MIO
1.8-2.5
3.0 - 4.2
5.0 -7.0
M12
3.0 -4.2
5.5 - 7.5
9.5 - 12.0
M14
5.0 -7.0
8.0 - 11.0
16.0 - 19.0
NOTE: Convert kg-m to ft-lb by muluplymg by 7.233
75
WESTERBEKE GENERATORS
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