Standard Hardware Torques - Westerbeke 12C-TWO Operator's Manual

STANDARD HARDWARE TORQUES
NOTE: Unless stated otherwise for a specific assembly, use the following torque values when tightening standard hardware.
Grade 4
Pilch I b-It kg-m
Grade 7T, 8T and 8.8 Pitch I b-It kg-m
6mm bolt head/nut
1 2.9-5.1 0.4-0.7
6mm bolt head/nut 1 5.8-8.7 0.8-1.2
8mm bolt head/nut 1.25 7.2-11.6 1.0-1.6
8mm bolt head/nut 1.25 14.5-21.7 2.0-3.0
1 Omm bolt head/nut 1.25 13.7-22.4 1.9-3.1
10mm bolt head/nut 1.25 28.9-39.8 4.0-5.5
1 Omm bolt head/nut 1.5 13.0-21.7 1.8-3.0
10mm bolt head/nut
1.5 26.8-37.6 3.7-5.2
12mm bolt head/nut 1.25 (ISO) 25.3-39.8 3.5-5.5
12mm bolt head/nut 1.25 (ISO) 54.2-75.9 7.5-10.5
12mm bolt head/nut
1.5 25.3-39.8
3.5-5.5
12mm bolt head/nut 1.5 50.6-65.1 7.0-9.0
12mm bolt head/nut 1.75 21.7-36.2 3.0-5.0
12mm bolt head/nut 1.75 43.4-61.5 6.0-8.5
13mm bolt head/nut 1.5 32.5-50.6 4.5-7.0
13mm bolt head/nut 1.5 57.9-86.8 8.0-12.0
14mm bolt head/nut 1.5
36.2-57.9 5.0-8.0
14mm bolt heail/nut 1.5 72.3-108.5 10.0-15.0
14mm bolt head/nut 2
34.0-55.7 4.7-7.7
14mm bolt head/nut 2 68.7-101.3 9.5-14.0
16mm bolt head/nut 1.5
54.2-79.6 7.5-11.0
16mm bolt head/nut 1.5 108.5-166.4 15.0-23.0
16mm bolt head/nut 2
51.4-76.7 7.1-10.6
16mm bolt head/nut 2 101.3-159.1 14.0-22.0
Grade 6T
Grade 5 Cap Screw
6mm bolt head/nut 1 4.3-6.5 0.6-0.9
1/4 UNC 9-11 1.2-1.5
8mm bolt head/nut 1.25 10.8-15.9 1.5-2.2
1/4 UNF 11-13 1.5-1.8
·1 Omm bolt head/nut 1.25 21.7-32.5 3.0-4.5
5/16 UNC 18-20 2.5-2.8
10mm bolt head/nut
1.5 19.5-30.4 2.7-4.2
5116 UNF 21-23 2.9-3.2
12mm bolt head/nut
1.25 (ISO) 36.2-57.9 5.0-8.0
318 UNC 28-33
3.7-4.6
12mm bolt head/nut 1.5 36.2-50.6 5.0-7.0
318 UNF 30-35 4.1-4.8
12mm bolt head/nut 1.75 34.7-49.2
4.8-6.8
7/16 UNC 44-49 6.1-6.8
7/16 UNF 50-55 6.9-7.6
112 UNC
68-73 9.4-10.1
112 UNF 73-80 10.1-11.1
BOLT DIAMETER BOLT HEAD MARK
4 7 10
M6
0.3-0.5 0.8-1.0
1.0-1.3
MB 1.0-1.3 1.5-2.2 2.5-3.5
M10 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
PARTS REQUIRING SEAlANT SURFACES REQUIRING SEAlANT SEALANT
(where to mount sealant coated parts)
Taper Screw 112" Thread portion (Gear Gase)
Liquid Teflon
Taper Screw 1/4" Thread portion (Cylinder Block right side, pump cover) Liquid Teflon
Taper Screw 1/8" Thread portion (Cylinder Head rear surface) Liquid Teflon
Water Drain Plug Thread portion {Cylinder Block right side, rear middle portion) Liquid Teflon
Oil Pressure Switch
Thread portion {Cylinder Block right side surface)
Liquid Teflon
Side Seal Periphery (Main Bearing Caps No. 1 and No. 5) Permatex #6B
Bearing Cap No. 1 Contact surface with Cylinder Block Permatex #68
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