When do you need a high pressure gear pump?
Gear pumps are commonly used for pumping high viscosity fluids such as oil, paints, resins or foodstuffs. They are preferred in any application where accurate dosing or high pressure output is required. The output of a gear pump is not greatly affected by pressure so they also tend to be preferred in any situation where the supply is irregular.
How does wear affect the efficiency of a gear pump?
Despite the best precautions, gear pumps generally succumb to wear of the gears, casing and bearings over time. As clearances increase, there is a gradual reduction in efficiency and increase in flow slip: leakage of the pumped fluid from the discharge back to the suction side.
Where does the liquid go when the Gears come out of the pump?
As the gears come out of mesh on the inlet side of the pump, they create an expanded volume. Liquid flows into the cavities and is trapped by the gear teeth as the gears continue to rotate against the pump casing. The trapped fluid is moved from the inlet, to the discharge, around the casing.
Why do I have a hard time shifting gears?
If the gear lever does not slot surely into a gear and feels rubbery then it’s a problem with the bushes at the bottom of the gear lever. This could have become hard and brittle, which will make it tough to change gears. Also check the gear linkage mechanism. There are two kinds of gear linkage mechanisms – cable shift or rod shift.
Can a 16 cm3 gear pump go higher than 100 bar?
Take, for example, a system that runs a 16 cm3 gear pump at 1450 rpm, and, say, the system pressure can’t go higher than 100 bar because the pump is worn-out. You’re looking at a 23*100/600=3.8 kW heater!
What should the PSI be in a Powerglide?
In a powerglide, most setups should see anywhere from 45 to 100 PSI. This will vary depending on the input shaft, pump, and converter combination. Transmission line pressure testing is also a great way to diagnose the internal condition of a transmission.
How can I increase pressure on my clutch pack?
The increased pressures can be achieved by installing a stronger spring in the valve body’s pressure regulator or by installing a complete valve body kit, like BTE’s Top Sportsman valve body. Higher pressure reduces shift lag and helps maintain friction clutch pack life. The cooler circuit should also be measured.
What happens when a hydraulic gear pump wears out?
There is, however, a very simple way to discover if a gear pump has “volumetric issues”. When a pump wears-out, its sealing clearances become larger, which causes reduction of “useful” flow and an increase of the internal leakage.