Non Perkins Hydraulics - Perkins D6500 Installation & Operational Manual

Hydraulic Oil
The most important component of any hydraulic system is the oil. Perkins cart lifters use standard seal
materials and should therefore be compatible to most grades of hydraulic oils, operating in typical
weather conditions for most of North America. However, the condition of the oil is an important
consideration that should not be overlooked.
Hydraulic oil may be dirty, contaminated, lost its viscosity, burned up, or have too high a concentration
of absorbed water and/or air. While these things are unlikely to cause an immediate performance issue
with your cart lifter, these issues can lead to premature wear and tear in the longer term.
Perkins would like to take this opportunity to remind you to check the quality of your hydraulic oil
periodically and make sure it meets your standards. Oil that is maintained in good condition will help
your equipment last longer.
Non-Perkins Controls
Some customers with new trucks may choose to use hydraulic controls provided by the OEM. As long as
the GPM and pressure settings used match the specifications required, then the lifter should operate
fine. Perkins cart lifters do not require special Perkins valves to operate.
In other cases, a Perkins cart lifter may be replacing a competitive lifter for which controls are already
installed. Again, Perkins cart lifters should work just fine with competitive equipment, as long as the
GPM and pressure settings are adjusted within the specified ranges.
Lifter Speed
The cycle time of the lifter is very important for safe operation. Perkins suggests a complete cycle time
of 6-8 seconds (3-4 seconds up and 3-4 seconds down). Faster cycle times may be dangerous. Running
a lifter too fast can damage the cart, or make a cart break loose off the lifter and fall, resulting in
damage and/or injury.
The speed of the cart lifter is determined by the rate of oil (gpm) going to the unit. A gauge is
recommended but not needed to determine proper lifter speed. Counting the cycle time using a stop
watch is adequate to determine proper flow rate. Running a lifter too fast will void the warranty.
Weight Capacity
The maximum amount of weight that can be lifted is limited by the pressure relief valve. The settings
must be determined with a pressure gauge. The SSP I – B(D6500) requires 1650 psi to lift a 400 lb load.
Place a pressure gauge after the hand valve and run the actuator until it stops, continue activating the
handle and note the pressure on the gauge. Adjust the relief valve according to the manufacturer's
instructions.
Perkins Manufacturing Company
Creators of the TuckAway
www.perkinsmfg.com
Cart Lifter
®
Non-Perkins Hydraulics
800-882-5292 Revised: 5/7/2019
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