SAC MaxiMixer 2030, Operation And Maintenance Manual

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8
MAINTENANCE
Your MaxiMixer will be delivered, fully lubricated and set up to all drive component installation
specifications. During the break in of your new MaxiMixer, it is recommended that a complete
daily inspection of all drive components be carried out. Throughout the life of your Maximixer, a
complete inspection of all drive components, fasteners, auger knives and shields should be
carried out during scheduled lubrication times. Wore or damaged parts must be replaced, loose or
misaligned parts must be adjusted and tightened to assure proper operation and life of
components.
WARNING: Always shut off tractor, set parking brake, remove the key,
and wait for all motion to stop before attempting to adjust, lubricate, service
or setup this machine!
FRONT DRIVE BELT (POLY CHAIN)
Belt Tension
A. Be sure it is tensioned adequately to prevent tooth jumping (ratcheting) under the most severe
load conditions, which the drive will encounter during operation.
B. Avoid extremely high tension, which can reduce belt life and possibly damage bearings,
shafts and other drive components.
Drive Alignment
C. There are two types of misalignment: parallel misalignment is where the driver and the driven
shafts are parallel, but the two sprockets lie in different planes. When the two shafts are not
parallel, the drive is angularly misaligned. A fleeting angle is the angle at which the belt
enters and exits the sprocket and equals the sum of the parallel and angular misalignments.
D. Any degree of sprocket misalignment will result in some reduction of belt life, which is not
accounted for in the normal drive design procedure. Misalignment of all synchronous belt
drives should not exceed 1/4 degree or 1/16” per foot of linear distance. Misalignment should
be checked with a good, straight edge tool. The tool should be applied from the driver to
driven, and then from the driven to driver sprockets so that the total effect of parallel and
angular misalignment is taken into account.
E. Drive misalignment can also cause belt-tracking problems. However, light flange contact by
the belt is normal and won’t affect performance.
Belt Installation
F. During the belt installation process, it is very important the belt be fully seated in the sprocket
grooves before applying final tension. Serpentine drives with multiple sprockets and drives
with large sprockets are particularly vulnerable to belt tensioning problems, resulting from
the belt teeth being only partially engaged in the sprocket during installation. In order to
prevent these problems, the belt installation tension should be evenly distributed to all belt
spans by rotating the system by hand. After confirming that belt teeth are fully engaged in the
sprocket groves, belt tension should be rechecked and verified. Failure to do this may result