The driveshaft is of tubular construction and may be of a one or two-section type. The front driveshaft on 4WD models is bolted to a flange at the front axle pinion, while attachment to the transfer case may include a bolted flange or a splined sliding sleeve connecting it to the output shaft. The attachment of the rear driveshaft to the rear axle pinion flange is connected by bolted flange, while attachment to the transmission or transfer case may include a bolted flange or a splined sliding sleeve connecting it to the output shaft. The type of connection used depends on the transmission type. Where a two-section shaft is used, the shaft is supported near its forward end on a ball bearing which is flexibly mounted in a bracket attached to the frame cross member. The driveshaft is finely balanced during manufacture and it is recommended that care be used when universal joints are replaced to help maintain this balance. It is sometimes better to have the universal joints replaced by a dealership or shop specializing in this type of work. If you replace the joints yourself, mark each yoke in relation to the one opposite in order to maintain the balance. Do not drop the assembly during servicing operations.