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Technical Support
cotter pins.
• Turn the adjusting screw (4) clockwise
to make one or two clicks in the ex-
pander arm adjustment mechanism.
• Repeat the adjustment on the second
cylinder on the same axis.
• Apply the brake.
• Wipe previous markings and measure
piston rod stroke again.
• If the piston rod stroke is not within
the correct operating range, repeat
the adjustment.
FUNCTIONAL CHECK
• After completing the adjustment,
carry out a test drive.
• Perform several brakes. Stop the
trailer and check the temperature of
the brake drums.
• If any drum is too hot, correct the
brake adjustment and perform the
test drive again.
PRONAR T672ECO
Chapter 6
J.3.3.259.04.1.EN
6.9
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