MacDon M105 - Metric Bolt Specifications Bolting into Cast Aluminum; Flare-Type Hydraulic Fittings

MAINTENANCE AN D SERVICING
5.2.3 Metric B
olt Specifi cations Bolting into Cast Alum inum
Table 5.9 Metric Bolt Bolting into Cast Aluminum
Bolt Torque
8.8
(Cast Alumin
um)
10.9
(Cast Alumin
um)
Nominal
Size (A)
ft·lbf
N·m
ft·lbf
N·m
M3 1
M4 2.6 4
M5
5.5
8
M6 6 9 9 12
M8 14 20 20 28
M10 28 40 40
55
M12 52 70 73 100
M14
M16
Figure 5.9: Bolt Grades
5.2.4 F lare-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 w ithout lubrication until contact has been made
between the flared surfaces.
3. Torque the fitting nut (E) to the specified number o f
flats from fi nger tight (FFFT) or to a given torque value
shown in the following table.
4. To prevent the fitting (D) from rotating, u se 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.
Figure 5.10
: Hydraulic Fitting
169890 191 Revision A