MLS MMLS3, Operator'S Manual

Page: 28 / 48

MLS Test Systems Pty Ltd
Revised: April 2013
26
The drum, curved outer rail and upper rail ends have been aligned for
proper working in the factory. As long as the upper rail ends are not
moved from the factory setting, they can be used as reference for the
position of the drum by setting the gap between them as described in 4.2
above.
If there is reason to believe that the machine frame has been distorted, or
the upper rail ends and the drive drum have both been moved, the
alignment of the drum relative to the outer rails must be checked and
adjusted if necessary.
To adjust the drum, proceed as follows:
4.4.1 Disconnect the machine from the mains supply.
4.4.2 Remove the curved safety cover at the end of the machine on
the drum side.
4.4.3 At that end of the machine, make sure that the machine frame is
square by measuring the diagonal distances from the bottom of
the left hand side panel to the top of the right hand panel as well
as from the bottom of the right hand panel to the top of the left
hand panel. The two distances should not differ by more than
2mm.
If adjustment is necessary, release the eight M10 bolts and nuts
holding the two stiffener plates at the end of the machine (four
per plate). Use a long carpenter’s clamp or similar to
diagonally press the frame in shape. Retighten the M10 nuts to
a torque of 67 Nm.
4.4.4 Select any axle of a link section on which the diameter of the
two yellow wheels are the same (

0.1mm) and move the bogie
chain until that axle is on the lower guide rail end (see fig. 6).
The wheels should be free to be rotated by hand.
4.4.5 Through the opening at the end of the machine, pull the wheels
towards you. When they are more or less at position K to L in
fig 6, both should simultaneously (within 40mm of each other)