2. Table 1 for your model generator.
Example: For an HR-8 System that is to operate at 650 RPM engine speed:
PTO Ratio = 880 RPM ÷ 650 RPM = 1.35 or 135% (or higher)
WARNING:
Never exceed the maximum pump shaft speed. Pump failure or premature pump wear
will result. Doing so will void the system’s warranty.
3. Verify the combined weight of the pump and hoses filled with hydraulic fluid do not
exceed the PTO manufacturer’s weight restriction. If the pump weight does exceed
this restriction, the installer has two options: A) a bracket to support the pump can
be implemented, or B) the pump can be mounted to the vehicle chassis, connected
to the PTO with a drive shaft.
4. Verify that the pump shaft will mount to the PTO. Pumps supplied by Smart Power
Systems
®
have an SAE B 2 bolt flange. The standard pumps supplied by Smart
Power Systems
®
have either a SAE B 7/8” 13 tooth spline for Models HR-6.2, HR-8
and HR-10; OR a SAE B-B 1” 15 tooth spline on the HR-110 model.
Upon special order, a 1” keyed shaft or 1” 15 tooth spline is available on Models HR-
6, HR-8 and HR-10. A 1 ¼” keyed shaft is available on the HR-110 Model. Check
the PTO manufacturer’s specification to verify that the pump supplied with the system
will mount to the PTO installed on the vehicle.
Note: In some cases it may be necessary to mount the pump remote from the PTO
and drive it with a drive shaft. Contact the PTO manufacturer for information on the
proper mounting configuration under these conditions.
WARNING:
The installer must provide guarding to prevent damage to the pump seals from road
debris if the pump is remotely located. Also, properly sized and installed vibration
isolators must be used if the pump is mounted to the chassis. Failure to do either
will void the system’s warranty.
Never use an unbalanced drive shaft to drive a remotely located pump. An
unbalanced drive shaft will cause premature wear of the pump and will void the
system’s warranty.
Do not approach a running A.C. modular generator when wearing long, loose items
such as hair, jewelry, ties, clothing, etc. Direct contact with a rotating drive shaft can
cause serious personal injury and/or damage to the system.
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