Pengo DT-5 - Manual (Page 25)

Two Speed (DT & RT) Series Manual 25
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TWO SPEED HYDRAULIC MOTOR INFORMATION
On the “Auto Shift” models the motor is equipped with an automatic kick down sequence valve, adjustable between
the range of 400 and 3000 PSI respectively. The Unit will start in high speed low torque mode until the preset pressure
is reached upon where it will automatically shift into low speed high torque mode. The unit will shift automatically back
to high speed mode when input fl ow is stopped. All Pengo Drives equipped with a Geartek two speed hydraulic motor
DO NOT require a return “drain” line.
CROSS-OVER PRESSURE RELIEF SYSTEM
Note all two speed motors are equipped with a cross-over pressure relief system. This system is designed to protect
the hydraulic motor from pressure spikes and potential overload conditions associated with hydraulically powered
equipment. The cross-over relief setting is factory set at 3100 psi and is not adjustable.
AUTO SHIFT PRINCIPAL
1 turn (360 degrees) = 600 - 800 psi
Turn Clockwise to increase psi
Turn Counterclockwise to decrease the psi
DO NOT turn in past snap ring!
Sequence Valve (2500 psi Pre-Set)
Part No: 660793
Crossover Relief Block (2)
Part No: 610070
Relief Valve (3100 psi Pre-Set)
Part No: 610067
Crossover Relief Hose
Part No: 610068
Figure 6
90 Deg Elbow
Part No: 610312