After disassembling the transmission, its parts should be cleaned and inspected to determine its technical condition. Repair or replace parts that are in poor technical condition to ensure the quality and performance of the modified transmission.

Damages to the transmission housing and cover are generally cracks, wear of the bearing seat and seat hole, deformation of the housing, etc.

Repair of Cracks in Transmission Cases and Transmission Covers

Cracks in the transmission case and transmission cover can be checked by visual inspection or tapping. Any cracks that do not extend into the bearing bore should be replaced. If there are no accessories, it can be repaired with epoxy resin or screw filling. In addition, welding can also be used to repair, but special attention should be paid to preventing cracking after welding.

Inspection of the deformation of the gearbox and gearbox cover

The deformation inspection of the gearbox casing and cover is measured by checking the unevenness of the joint surface of the casing and cover. The flat plate, or both together, is checked with a thickness gauge. When the gap exceeds the specified value, it should be replaced. If there are no accessories, you can use a plane, shovel, or chisel for leveling, but you should pay attention to the selection of the base plane when planing the surface.

Inspection of the gearbox bearing hole wear

The gearbox bearing hole wear will cause the gear shaft to shift, the two axes will not be parallel, and the normal meshing of the gears will be broken. When the matching clearance between the bearing and the socket exceeds the specified value, the expansion sleeve can be repaired if the bearing meets the requirements. Before installing the hinge sleeve, check the deviation between the axis of each axis and the plane, and then take the processing benchmark first. When bored, the seat should be restored. l geometric shape, and eliminate the error between the axis and the plane. Using a method that combines shaping and processing to repair the shell is the key to ensuring the quality of repair.

Maintenance of the transmission cover

The most frequently worn parts of the transmission cover are the gear lever ball joint seat and the shift fork shaft? l. Ball joint seat wear is usually checked after the ball joint is installed into the seat hole. If it exceeds the specified value, it should be replaced. If there are no accessories, there are generally two repair methods: repair the seat hole, weld it with a welding rod, and then turn it to fit properly. (2) Turn the shift lever ball joint after surfacing. Press the gear lever straight down when turning and then return to the original position after turning. Check the shaft hole of the shift fork shaft and the shift fork shaft for excessive wear and should be replaced.