Westerbeke 20.0 BEDA - Standard Hardware Torque Values; Bolt and Screw Torque Charts; Sealant Applications

STANDARD HARDWARE TORQUES
NOTE: Unless stated othenvise for a specific assembly, use the following torque values when tightening standard hardware.
Grade 4
Pitch I b-It
kg·m
Grade 7T, 8T and 8.8 Pitch I b-It
kg-m
6mm bolt head/nul 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
1 Omm 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-q,O
1 Omm 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 (IS?)
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 bot! 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 head/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
1 Omm bolt head/nut 1.5 19.5-30.4 2.7-4.2
5/16 UNF
21-23
2.9-3.2
12mm bolt head/nut
1.25 (ISO) 36.2-57.9 5.0-8.0
3/8 UNC
28-33 3.7-4.6
12mm bolt head/nut
1.5 36.2-50.6 5.0-7.0
3/8 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
1/2 UNC
68-73
9.4-10.1
1/2 UNF
73-80 10.1-11.1
GENERAL SCREWS
BOLT DIA. BOLT HEAD MARK
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
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
SEALANTS
PARTS REQUIRING SEALANT
SURFACES REQUIRING SEALANT
SEALANT
(where to mount sealant coated parts)
Taper screw 1/2 " Thread portion (Gear case) 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 #68
Bearing cap No. 1
Contact surface with cylinder block
Permatex #6B
Engines & Generators
53