How to do a forklift bearing lubrication?

The new lift star truck or hydraulic hand truck stop working long after, within two weeks at the beginning of use, should be lubricated bearings for when lubrication should take advantage of all the new oil out of the old oil and lubrication for more than two, and should pay attention to The following points.
1, should be removed before lubricating oil cap, oil drain plug and nozzle above the dirt, so dirt falling into the house.
2, with a grease gun lubricant injection pressure, injection pressure to be part of the components of the extrusion lubricant combination so far.
3, in summer or winter seasonal lubricant should be replaced