| 摘要 |
<p>A PTO clutch includes a lubrication shut-off valve (156) that can slide between a first position blocking a port for lubrication oil to lubricate the PTO clutch (100), and a second position opening the port to lubricate the clutch (100). A relief valve (161) is provided in the lubrication shut off valve (156), which opens in response to pressure spikes of activation oil and isolates the pressure spikes from the clutch piston (122).</p> |
