A trailer jack is a very practical tool that can be used to raise and lower a vehicle during towing, providing great convenience for vehicle towing. The main uses are as follows: 1. Lift the vehicleDuring the towing process, sometimes it is necessary to lift the vehicle to facilitate towing. At this

A trailer jack with wheels is a highly practical tool that assists in towing or tire replacement when vehicles break down. Below are instructions on how to make a pulley for a trailer jack with wheels.Firstly, we need to prepare the following materials and tools:Materials: Steel pipe, flat iron, ste

The utility model relates to a trailer jack, which can support the trailer when the trailer and the tractor are off, and the structure includes an outer cylinder, an inner cylinder, a screw, a handle, a nut, a bearing, a tripod and a castor, etc. The rotating motion of the screw is converted into an

1) Before use, check that all parts are in good condition and the oil is clean. It is strictly forbidden to use the safety plug of the hydraulic jack if it is damaged, or the thread of the screw and rack jack is 20%.2) The jack should be placed in a flat, solid place and leveled with a mat.3) The ja

The jacks are divided into two types: Mechanical jacks and hydraulic jacks. The principles are different. In principle, the hydraulic jack is based on the Pascal principle, that is, the pressure across the liquid is uniform, so that in a balanced system, the pressure exerted on the smaller piston is