MTD 2010 Shop Manual page 29

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Control valve in Extend (splitting)
• The pump drives hydraulic fluid to the control valve.
• The spool in the control valve directs pressurized fluid to the base end of the cylinder.
• The pressurized fluid forces the piston up the bore of the cylinder.
• As the piston moves up the bore, it displaces fluid that is on the ram side of the piston.
• The spool in the control valve also connects ports joining the ram end of the cylinder to the reservoir.
• This allows displaced fluid to return to the reservoir.
Figure 3.22
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Hydrualic Diagnosis
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