MLS MMLS3, Operator'S Manual

Page: 15 / 48

MLS Test Systems Pty Ltd
Revised: April 2013
13
the flange and record the number of turns. To increase the
load, screw the flange away from the u-bracket (i.e. compressing
the spring). It should be possible to rotate the spring by hand if
nut A is, at the same time, rotated in the same direction by a
24mm ring wrench. One end of the spring assembly may be
lifted out of the spring support to get a better grip. Otherwise a
strap wrench may be used.
3.1.2.4 With the spring in position, release nut A, but do not remove it
yet.
3.1.2.5 Repeat the above operations for the other spring, using the same
number of turns.
3.1.2.6 Measure the wheel load as described in 3.1.1 above.
3.1.2.7 If the load is still not correct, use the measured load increment
and number of turns (see 3.1.2.3) to calculate the required
number of turns to arrive at the correct value and repeat the
above steps until the wheel load is correctly set. Also measure
the length of both springs. They should not differ by more than
2 mm.
3.1.2.8 REMOVE THE NUTS AND SPACERS ON BOTH SPRINGS.
3.1.2.9 Adjust the tyre pressure if necessary.
3.2 Setting up the machine on the pavement
To prevent damage to the machine, it is important that the pavement be
fairly flat and firm enough to carry the weight of the machine. Keep in
mind that the wheels travel at high speed and that bumps or holes in the
pavement may cause large shock loads.
3.2.1 Getting the machine into position
3.2.1.1 Move the machine in position on the test pavement by its
transport wheels or by crane.