Metric Bolt Specifications Bolting Into Cast Aluminum; Flare-Type Hydraulic Fittings - MacDon M105 Operator's Manual

5.2.3 Metric Bolt Specifications Bolting into Cast Aluminum
Table 5.9 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

5.2.4 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
shown in the following table.
4. To prevent the fitting (D) from rotating, use two
wrenches. Place one wrench on the fitting body (D)
and tighten the nut (E) with the other wrench to the
torque shown.
5. Assess the final condition of the connection.
169890
MAINTENANCE AND SERVICING
Bolt Torque
10.9
(Cast Aluminum)
N·m ft·lbf N·m
1
2.6
5.5
9 9
20 20
40 40
70 73 100
4
8
12
28
55
Figure 5.9: Bolt Grades
Figure 5.10: Hydraulic Fitting
191
Revision A