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D R
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HORIZONTAL/VERTICAL LOG SPLITTER
Chapter 5: Troubleshooting
Most problems are easy to fix. Consult the Troubleshooting Table below for common problems and their solutions. If you
continue to experience problems, contact us at www.DRpower.com or call toll-free 1-800-DR-OWNER (376-9637) for support.
Troubleshooting Table
S
YMPTOM
P
OSSIBLE
C
AUSE
Cylinder rod will not
move
Broken shaft; See authorized service dealer.
Shipping plugs left in hydraulic hoses; Disconnect hydraulic hoses, remove shipping plugs,
and reconnect hoses.
Set screws in coupling not adjusted properly; See authorized service dealer.
Loose pump coupling; Correct engine/pump alignment as necessary.
Pump Coupling damaged; See authorized service dealer.
Damaged relief valve; See authorized service dealer.
Hydraulic lines blocked; Flush and clean hydraulic system.
Incorrect oil level; Check oil level.
Damaged control valve; See authorized service dealer.
Blocked control valve; Flush and clean hydraulic system.
Slow cylinder shaft
speed while extending
and retracting
Pump Coupling damaged; See authorized service dealer.
Excessive pump inlet vacuum; Make certain pump inlet hoses are clear, unblocked and not
kinked. Use short, large diameter inlet hoses.
Slow engine speed; See authorized service dealer.
Damaged relief valve; See authorized service dealer.
Incorrect oil level; Check oil level.
Contaminated oil; Drain oil, clean reservoir and refill.
Control valve leaking internally; See authorized service dealer.
Internally damaged cylinder; See authorized service dealer.
Leaking at face of
Cylinder or at fittings
Worn seals; See authorized service dealer.
Scored cylinder; See authorized service dealer.
Fittings are loose; tighten as needed.
Wood will not split or
wood splits too slowly
Pump check valve leaking; See authorized service dealer.
Excessive pump inlet vacuum; Make certain pump inlet hoses are clear, unblocked and not
kinked.
Incorrect oil level; Check oil level.
Contaminated oil; Drain oil, clean reservoir and refill.
Control valve leaking internally; See authorized service dealer.
Overloaded cylinder; Do not attempt to split wood against the grain.
Internally damaged cylinder; See authorized service dealer.
Before performing any maintenance procedure or inspection, stop the engine, wait five minutes to allow all parts to cool.
Disconnect the spark plug wire, keeping it away from the spark plug.
