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Maintenance Gear Pumps

Sometimes, gear pump bearing composes of a specially designed surface layer of PTFE formulations and is specifically applied for the high PV value. It can be used in medium, high-pressure gear pump, ram pump, and vane pumps and so on. As it is without lead, it makes the bearing lubricating condition cleaner, and in accordance with environmental request.

Although there are many other applications that use gear pumps, the most common example is the hydraulic gear pump that is used in the transmissions of many vehicles. Since it is so commonly used on vehicles, the proper maintenance becomes rather necessary because good maintenance tips might be able to save you the considerable expense.

The most important component you should pay attention to is the gear pump bearing because defective bearings allow the gears in the pump to shift position in the chamber, rather than remaining straight and true. Thus, you should check them to ensure their proper performance. And if pump bearings have some problems, you have to remove them by using a bearing puller.

Besides, you should check the teeth in the gears for signs of wear and tear. A brand new gear pump usually ships with a clearance of about 0.005 to 0.007 inches between the teeth of the gears and the chamber wall. This clearance is just enough for a piece of very thin wrapping paper. Therefore, you can use this type of paper to check the clearance between the gear teeth. If the paper slides in and out between the teeth too easily, then the gears have been worn due to scrubbing or poor lubrication.