DR Power Dual Action 10-Ton Electric (Aug 2011 - Present) - Manual (Page 21)

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Adjusting the Pressure Valve
The Log Splitter is set at the factory to optimize splitting force. The following
adjustment should only be performed if the splitter Breaker or house Breaker is
being tripped excessively while splitting Logs. Adjusting to less pressure should
lessen the Breaker problem but will also lessen splitting force.
Tools needed:
 Two 9/16" Wrenches

Two 1/2" Wrenches

10mm Wrench
 4mm Allen Wrench
1. Remove the Operator Lever Knob by unscrewing it counterclockwise.
2. Remove the front hardware from the Valve Cover using Two 9/16" Wrenches
(Figure 33).
3. Remove the rear hardware from the Valve Cover using Two 1/2" Wrenches.
4. Remove the Valve Cover.
5. Remove the Valve Plug using a 10mm Wrench (Figure 34).
Note: Only turn the Pressure Screw 1/4 turn at a time to prevent over adjustment.
6. Adjust the Pressure Screw by turning it counterclockwise 1/4 turn (less
pressure) or clockwise 1/4 turn (more pressure) with a 4mm Allen Wrench
(Figure 35).
7. Replace the Valve Plug and operate the Log Splitter to check the setting and
adjust further as needed.
8. Position the Valve Cover.
9. Install the rear hardware of the Valve Cover using Two 1/2" Wrenches.
10. Install the front hardware of the Valve Cover using Two 9/16" Wrenches.
11. Install the Operator Lever Knob by screwing it on clockwise.
Figure 33
Rear Bolts,
Washers and
Locknuts
Operator Lever
Valve Cover
Front Bolts,
Washers and
Locknuts
Jam
Nut
Pressure
Screw inside
Figure 35
Valve Plug
Figure 34
Pressure
Valve
If you turn the pressure screw out too far and it comes out of the valve, screw
it back in all the way as you count the number of full turns until it stops. Turn
it back out half the number of turns to position the screw at the central
pressure location. Use this position to start pressure adjustment again.
Valve plug should always be installed before testing pressure to protect
yourself from high pressure fluid.