MTD 2010 Shop Manual page 26

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2010 Log Splitters
4. Control valve test
A. Turn off the engine.
B. Relieve hydraulic pressure from the system by moving the lever on the control valve through it's full
range of travel.
C. Remove the test gauges from between the pump and the control valve.
D. Reinstall the original hydraulic hose that connected the pump to the control valve.
E. Install the test gauges between the log splitter
control valve and the extend port on the
hydraulic cylinder. See Figure 3.20.
e1. Disconnect the hydraulic hose that runs
from the log splitter control valve to the
extend port on the hydraulic cylinder.
NOTE: The control valve is mounted to one of the
trunnions of the cylinder. This makes it diffi-
cult to connect the test gauge set to the side
of the hydraulic system that retracts the ram.
e2. Install the test gauge set with the pressure
gauge nearest on the control valve side and
the flow meter on the cylinder side.
e3. Start the engine.
e4. Check for leaks.
e5. Cycle the ram 12 times to warm-up the fluid and purge air from the hydraulic system.
F. While extending the ram, gently release the control lever several time.
NOTE: The control lever must return to the neutral position as soon as it is released. If it fails to do so, even
once, the valve must be replaced.
G. Move the control lever to the retract position.
NOTE: The control lever should stay in the retract position until the ram is fully retracted. After the ram is
retracted, the system will build pressure and return the control lever to the neutral position.
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Control valve
Figure 3.20
Extend port