Westerbeke 20B TWO - Page 92

Socket Size
.Lb:ft.
&l:m
Cylinder head bolt
M 10 (14 mm)
54 - 61
7.5 - 8.5
M 8 (12 mm)
14 -22
2.0 - 3.0
Rocker shaft hold down bolts
M 8 (12 mm)
11 - 16
1.5 '" 2.2
(See the
"Cylinder Head" section of this manual.)
Crankshaft pulley nut
·5.0~BCD
M 16 (24 mm)
72.3 - 86.7
10 -12
Oil pan drain plug
M 18
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) (fo Engine)
Fuel Solenoid Locknut
M 30 (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 kg/cm
2
(1990 psi ± 140/0)
Cylinder Compression
28 kg/m
2
at 280 rPm (398 psi)
Pressure
FLYWHEEL BOLTS
M10(17 MM)
60 -65
8~3:- 8.9'
Tightening Torque for Common Bolts and Nuts
Head mark
Designation of screw 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
MI2
3.0,,:,",4.2
5.5- 7.5
'9.5--12.0
MI4
5.0--7.0 8. O- 11.0 16.0-19.0
* NOTE: M8 indicates Metric. 8 mm thread diameter
Westerbeke Engines
90