DA435HA: 99901219: 2-419980930
There are two things which can be done to make
certain single plane angles are SMALL and
EQUAL:
Make sure that the transmission and pump are mounted
so that their centerlines are parallel when viewed from
both the side and the top.
Make sure the offset between them is mall in both views.
COMPOUND ANGLES
Compound u-joint operating angles occur when the
transmission and pump are not in line when viewed
from both, the top and side. Their centerlines,
however, are parallel in both views. See figure.
TRUE U-JOINT OPERATING ANGLE
The true u-joint operating angle, which must be
calculated for each end of the shaft with compound
angles, is a combination of the u-joint operating
angle in the top view, as determined from the chart,
and the measured u-joint operating angle in the side
view.
To determine the true u-joint operating angle for one
end of a shaft, (compound angle C° in the formula
shown in figure below) insert the u-joint operating
angle measurement obtained in the side view and the
u-joint operating angle obtained from the chart into
the formula.
Do the same for the other end of the shaft. Compare
the resultant calculated u-joint operating angle for
each end. They should be EQUAL within 1°. If they
are not, the driveshaft will vibrate.
2-4-3. ELIMINATING COMPOUND
ANGLE INDUCED VIBRATIONS
Compound u-joint operating angles are one of the
most common causes for driveline vibration. To
avoid thease problems, remember these important
considerations:
When setting up an application that requires compound u-
joint operating angles, always keep the centerlines of the
transmission and pump parallel in both views.
Always keep the offset between their horizontal and
vertical centerlines small.
NOTE
CENTERLINES OF TRANSMISSION AND AXLE MUST
BE PARALLEL IN BOTH TOP AND SIDE VIEWS TO USE
THIS METHOD OF DETERMINING TRUE U-JOINT
OPERATING ANGLE. CONTACT IMT TECHNICAL
SUPPORT IF YOU HAVE AN APPLICATION WHICH
CANNOT BE INSTALLED WITH THEIR CENTERLINES
PARALLEL.
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