When rebuilding a gearbox, we do a complete tear down. We use O.E.M(Original Ex Manufacturer) spare parts and give a warranty of 20000km, or one year whichever comes first. We always take the customers interest into account by keeping the cost to a minimum. Eg if the transmission has been run for a considerable distance (>50000km), we renew all friction and steel plates. If clutch damage has occurred, the converter, oil cooler lines and the oil cooler itself must be thoroughly flushed out with a suitable cleaning agent. At the same time we always refer to the Manufacturer's Technical Bulletins for the relevant test values depending on the transmission involved.