Westerbeke 20B TWO Tehnical Manual 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