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©HALE PRODUCTS, INC. Our policy is one of continuous development. We therefore
reserve the right to amend specifications without notice or obligation.
DRIVE LINE
For driveline flange connection, appropriate driveline, shouldered
hardware in the quantity and size specified must be used.
Due to the increasing sophistication of fire apparatus and truck
design, there is potential for an increase in the number
of driveline problems.
These problems include: drive shaft failure, loosened drive ends on pump gearboxes, broken
mounting brackets, driveline joint or slider wear, bearing wear on pumps or rear axles, and vibrations
at specific road speeds. While the incidence of these problems is low, they are expensive to fix yet
easy to avoid.
It is critical to use computer driveline analysis software, such as Dana’s “The Expert,” during driveline
layout. Dana’s software is available free on the World Wide Web at:
While using the software, perform three separate driveline analyses:
•
Front drive shaft assembly
•
Rear drive shaft assembly
•
Total system
Ensure individual shaft cancellation and correct phasing.
When performing calculations, strive to achieve the lowest driveline torsional and inertial vibrations,
making sure to avoid severe driveline angles. Be conservative and always err on the side of
SAFETY. Always measure the drive shaft after construction to make sure it matches the computer
design.
Remember the following points while designing a driveline.
•
Problems can occur with or without noticeable vibration.
•
Suspension travel and torque wrap-up can change a marginal driveline into one that is
unacceptable. Always consider the full movement of the driveline.
•
Center your driveline sliders and ensure they have sufficient travel to allow for the entire
movement of the suspension.
•
Do not measure driveline angles using a bubble protractor. Instead, use a digital inclinometer.
Remember to zero the inclinometer on the truck frame, not the ground.
•
Split-shaft drivelines inherently have yoke phasing that can change with every shift. This is
one reason to design the other aspects of the drive-line more conservatively than a "non-split
shaft" truck driveline. Long drivelines can lead to component vibration or failure. As the
driveline approaches half critical speed, a vibration can occur that could damage driveline
components. This is much more critical in fire apparatus with split shaft pumps. The phasing
Flange Series
Qty.
Size
1600, 1610
1650, 1700
1710
8
3/8”
(9.5mm)
1780, 1800
1810
12
7/16”
(11mm)
Содержание HALE SmartCAFS
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