MacDon DWA, Operation And Parts Manual

Page: 82 / 98

REFERENCE
6.1.3 Metric Bolt Specifications Bolting into Cast Aluminum
Table 6.9 Metric Bolt Bolting into Cast Aluminum
Bolt Torque
8.8
(Cast Aluminum)
10.9
(Cast Aluminum)
Nominal
Size (A)
N·m ft·lbf N·m ft·lbf
M3
– – –
1
M4
– –
4 2.6
M5
– –
8
5.5
M6 9 6 12 9
M8 20 14 28 20
M10 40 28 55 40
M12 70 52 100 73
M14
– – – –
M16 – – – –
Figure 6.9: Bolt Grades
6.1.4 Flare-Type Hydraulic Fittings
1. Check flare (A) and flare seat (B) for defects that might
cause leakage.
2. Align tube (C) with fitting (D) and thread nut (E) onto
fitting without lubrication until contact has been made
between flared surfaces.
3. Torque fitting nut (E) to specified number of flats from
finger tight (FFFT) or to a given torque value in Table
6.10 Flare-Type Hydraulic Tube Fittings, page 75 .
4. Use two wrenches to prevent fitting (D) from rotating.
Place one wrench on fitting body (D), and tighten
nut (E) with other wrench to torque shown.
5. Assess final condition of connection.
Figure 6.10: Hydraulic Fitting
214048
74
Revision A