Models B1500, B2500, and B3500 use needle bearings on the high-load area (gear side) of the winch shaft(s). Although rare, bearings could fail if the winch is used in harsh environments. The driveshaft(s) should have some looseness and be able to move side to side slightly. If there is an excess in side to side movement in any of these shafts, the needle bearings may have failed and will need to be replaced. To check this, the winch will need to be completely disassembled. Individual needles that are missing and have fallen out of the bearing indicate a bearing failure. These bearing are press fit into the bearing housing in the winch frame. On model B1500 there are two bearings used, one on the main driveshaft and one for the gear being driven by the main driveshaft. Both of these bearing housings are welded to the frame. A hammer and punch are required to get the bearing out of the housing. This will destroy the bearing; however since it is being replaced it doesn’t matter. Since the winch is disassembled you can use a vise to press the new bearing into the bearing housing. Order bearing P/N 205131 for the main shaft and bearing P/N 205130 ( large 1 bearing) for drive gear shaft. On model B2500 models the bearing housing for both the primary shaft and the secondary shaft are not welded to the main frame, so to replace a bearing simply order both the housing and bearings as they will come already pressed together. Order part P/N 404479 for the primary shaft housing and part P/N 205183 for the bearing. If the large 1 bearing ( P/N 205133) in the main frame need to be replaced, it will have to be removed with a hammer and punch in the same matter as mentioned as above on B1500 models. There is also a needle bearing (P/N 205134) used in the gear positioned between the primary and secondary driveshaft’s. If this bearing needs to be replaced it will have to be pushed out and a new bearing pressed back into the gear. Model B3500 is much the same as the B2500, both primary and secondary driveshaft’s use the same bearings (P/N 205183) and the same bearing housing (P/N 404476).