New Holland T9 670 valve cover gasket and crank case filter replace

This is a hands-on repair video, not a review: an owner walks through diagnosing a leaking valve cover gasket on a T9.670, tracing the root cause to a plugged crankcase breather filter, removing and replacing both parts, cleaning the housing, and pressure-checking connections with ether after reassembly. It also mentions removing John Deere auto-steer wiring for resale. Useful mainly for owners troubleshooting the same leak or planning this specific repair themselves.

Posted by the Kessler Grain Farms channel, an owner-operator documenting their own tractor repair work.