7
IMPORTANT NOTICE
The lifetime of the driving shaft and its components such as forks, seals and tubes depends on several
factors that cannot be controlled by Normand Company.
The following issues directly affect the lifetime of the drive shaft:
x
Too big tractors (an excessive P.T.O. angle)
x
The P.T.O. joints
x
The angle on each end of the P.T.O must be equal.
x
The shear bolts (use only the original bolts)
x
The frequency of lubrication and the type of grease used (good quality grease, industrial-type)
x
Maximum length of the P.T.O.
In the event that one or more of the above mentioned situations applies, we suggest you as an option the
following solutions.
x
To increase the distance from the tractor to the snowblower would reduce the angle at the joints.
x
A bigger driving shaft (for an intensive use when the tractor is at the top of the recommended power
would extend the lifetime of the shaft when the operating angle is moderate.
x
A driving shaft with multilobe tubes (would facilitate the sliding of the tubes)
x
The installation of a raiser and reducer gearbox 1000 rpm to 540 rpm on the snowblower would reduce
the angle and mechanical stress of the P.T.O. on the tractor.
TO AVOID
TOO BIG ANGLE AT THE P.T.O.
JOINTS
ACCEPTABLE
REASONABLE ANGLE AT THE P.T.O.
JOINTS
TO AVOID
NON EQUALS ANGLES AT THE P.T.O.
JOINTS
RECOMMENDED
EQUAL ANGLES AT THE P.T.O. JOINTS
