Description

When your old Ford starts acting sluggish on the hydraulics or you’re losing three-point control right when you need it most, a worn main drive gear in the piston pump is often the culprit. This is the main gear that drives your hydraulic piston pump, the heart of your hydraulic system. Whether you’re lifting implements, running your loader, or just trying to get smooth three-point operation, this gear keeps everything spinning the way it should.

What You’re Getting

Precision-manufactured gear designed specifically for Ford piston pumps through 1964
Durable construction built to handle the constant load and vibration of hydraulic pump operation
Direct replacement that fits without modifications or special tools
Quality materials that resist wear from hydraulic fluid contamination and pressure cycling

Built for the Classic Ford Workhorses

This gear fits Ford NAA Jubilee, 600, 700, 800, 900, 2000, and 4000 series tractors built through 1964. These are the utility tractors that built American agriculture – from the little NAA Jubilee that’s perfect for small farms and hobby operations to the 4000 series machines that handle serious field work. Whether you’re running a compact utility tractor for barn chores or a mid-size row-crop machine for cultivation and planting, this gear keeps your hydraulics working.

Made to Last

Your hydraulic pump main gear spins constantly when the engine runs, transferring power under pressure and dealing with whatever contamination finds its way into the hydraulic system. This gear is manufactured to handle those demands, with proper hardness and surface finish to resist wear. The precision manufacturing ensures proper mesh with other pump components, reducing noise and vibration that can damage the entire pump assembly.

Installation Notes

Replacing this gear requires splitting the pump, so it’s a good time to inspect other internal components while you’re in there. Check the pump housing for scoring and make sure all seals are in good condition. If you’re doing this job, consider changing your hydraulic filter and fluid at the same time – clean oil helps new parts last longer. Most experienced mechanics can handle this repair in an afternoon with basic tools.