农用运输车的自卸齿轮泵和变速箱齿轮是常结合的，只要发动机不熄火，离合器不分离，均是泵油工作着，齿轮泵体属铸铝制品，易于磨损。磨损后其自卸能力明显下降，只能通过分配器升降开关调压阀进行调整；调整次数多了仍达不到效果，此时需更换新的齿轮泵，现将更换＼操作调整 Dump truck gear and gearbox gear are often combined, as long as the engine does not stall, the clutch is not separated, are working oil pump, gear pump body is cast aluminum products, easy to wear. After wear its ability to dump significantly decreased, only through the distributor lift switch regulator to adjust; more than the number of adjustments are still not up to the effect, this time need to replace the new gear pump, now change operation to adjust