Metric Bolt Specifications Bolting Into Cast Aluminum; Flare-Type Hydraulic Fittings - MacDon D65 Operator's Manual

8.2.3 Metric Bolt Specifications Bolting into Cast Aluminum
Table 8.10 Metric Bolt Bolting into Cast Aluminum
Nominal 8.8
Size (A) (Cast Aluminum)
ft·lbf
–
M3
–
M4
–
M5
M6 6
M8 14
M10 28
M12 52
–
M14
–
M16

8.2.4 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 the flared surfaces.
3. Torque the fitting nut (E) to the specified number of
flats from finger tight (FFFT) or to a given torque value
in Table 8.11 Flare-Type Hydraulic Tube Fittings, page
260.
4. Use two wrenches to prevent fitting (D) from rotating.
Place one wrench on the fitting body (D) and tighten
nut (E) with the other wrench to the torque shown.
5. Assess the final condition of the connection.
147725
REFERENCE
Bolt Torque
10.9
(Cast Aluminum)
N·m N·m
ft·lbf
–
1
–
2.6
– 5.5
9 9
20 20
40 40
70 73 100
– –
– –
–
4
8
12
28
55
Figure 8.9: Bolt Grades
–
–
Figure 8.10: Hydraulic Fitting
259
Revision A