Nissan 39100-58G00 Shaft Assy-Front Drive

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Power is transmitted from the front differential/axle to the front wheels through a pair of axle shafts, each with an inner end bolted to an axleshaft connected to the differential side gears and an outer end with a stub shaft splined to the front hub and bearing assembly. The inner ends of the axle shafts are equipped with sliding constant velocity (CV) joints, while the outer ends have “ball-and-cage" type CV joints. The boots should be inspected periodically for damage and leaking lubricant, and if either boot of an axle shaft is damaged, that axle shaft must be removed in order to replace the boot. Should a boot be damaged, the CV joint can be disassembled and cleaned, but if any parts are damaged, the entire axle shaft assembly must be replaced as a unit. Common symptoms of worn or damaged CV joints include a clicking noise in turns, a clunk when accelerating after coasting and vibration at highway speeds, and play in the CV joints and axle shafts can be checked by grasping each axle and rotating it in both directions while holding the CV joint housings.

Before removing the driveshaft, mark the relationship of the driveshaft to the differential companion flange. Then, unbolt the driveshaft from the flange and support it with a piece of wire from the underbody.

In 4WD models, a fully independent front axle assembly is utilized. This assembly includes a differential and a pair of drive axles, each equipped with inner and outer constant velocity (CV) joints.

Proceed by removing the wheel, brake drum, and brake shoes. Disconnect the parking brake cable from the lever on the trailing shoe and unbolt the cable casing from the backing plate. Additionally, disconnect the hydraulic line fitting from the wheel cylinder.

For other models not mentioned earlier, disconnect the parking brake cables from the crank levers on the backing plates. Unscrew the nuts from the spring U-bolts and remove the spring plates.

To disconnect the upper control arm from the steering knuckle, remove the cotter pin and loosen the nut from the upper control arm ball joint. Then, break the steering knuckle loose from the ball joint by striking the steering knuckle boss where the ball stud passes through.