104
6 Modifications to the basic vehicle
6.11 Brake systems
MITSUBISHI FUSO body/equipment mounting directives for FE Issue date: 20. 10. 2020
! Only print out complete sections from the current version
The tightening torques for the flare nuts which
connect the brake lines are shown below.
6.11.2 Making additional tubes
• Only use brake tubes of the same material as the
tubes connected to the chassis when extending
the brake tubes.
• Only use steel tubes to extend the brake fluid
tubes. Never use copper tubes.
• Only use metric pipe tools to form the flared end of
brake lines as shown in the "Flared end shape
figure" in Fig. 1. Be careful to not scratch the tubes,
or damage the mating surfaces when flaring the
ends.
• A brass nut used with steel tubes could cause
uneven fitting between the flared surface of the
tubes and the connecting surface joint, resulting in
fluid leakage.
• Use the flare nuts specified in the table below.
• Use a tubing bending tool to bend the brake lines
correctly. Do not use heat to bend the brake lines.
• The bend curvature R should strictly conform to the
minimum allowable bend radius R shown in the
table below.
Unit: mm
Nominal
Diameter
mm
Tightening torque
N·m {kgf.cm}
4.75
4.76
13 to 17 {130 to 170}
6.35 19 to 26 {190 to 260}
Nominal
diameter of
tube
mm
Fig. 2
4.75
4.76
MF651001 (Double flare type)
MK678335 (ISO flare type)
6.35 MF651002 (Double flare type)
MK678336 (ISO flare type)
Nominal
diameter
Bend radius
4.75
4.76
25
6.35 30
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