MacDon M105, Operator'S Manual

Page: 205 / 384

MAINTENANCE AND SERVICING
5.2.3 Metric Bolt Specifications Bolting into Cast Aluminum
Table 5.9 Metric Bolt Bolting into Cast Aluminum
Bolt Torque
8.8
(Cast Aluminum)
10.9
(Cast Aluminum)
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 Flare-Type Hydraulic Fittings
1. Check fl are (A) and fl are seat (B) for defects that might
cause leakage.
2. Align tube (C) with fi tting (D) and thread nut (E) onto
fi tting without lubrication until contact has been made
between the fl ared surfaces.
3. Torque the fi tting nut (E) to the speci fi ed number of
fl ats from fi nger tight (FFFT) or to a given torque value
shown in the following table.
4. To prevent the fi tting (D) from rotating, use two
wrenches. Place one wrench on the fi tting body (D)
and tighten the nut (E) with the other wrench to the
torque shown.
5. Assess the fi nal condition of the connection.
Figure 5.10: Hydraulic Fitting
169890
191
Revision A