Infiniti 37200-CG100 Shaft Assembly-Front PROPELLER

Carry the car up and support it safely on stands. Crawl below the car, look at its drive shaft to see any dents in the tube or a crack visible on it. Any presence of these requires one to replace the entire drive shaft. Look for oil leaks at the front and rear end of the drive shafts. If there is leaking around where the driveshaft enters the transmission, then this means that there is an issue with the rear seal of the transmission; if there is leaking around where the driveshaft connects to differential; this may mean that your pinion seal is defective while if at all there is leaking around entrances into transfer case (AWD models) - your transfer cases' seals could be faulty. In addition to that, while under raise an assistant turn back wheel so that it would make a rotating motion of driveshaft. At this point ensure universal joints are not functioning properly by checking their free movement without making sound or being loose. Also in case a drive shaft does not move, you can test how universal joints are working by holding hands on either side of each coupling and twisting it cautiously. If it has just a little play on whichever side, then most likely it needs changing. Additionally, lifting upwards at any stage might reveal activity within them as well. Lastly, ensure that you have tightened up all your bolts which hold your drive shaft on both ends.

To accomplish this, lift the vehicle off the ground and support it securely on jackstands, and then barricade in front of the wheels. To reach the driveshaft, take off the back part of the exhaust system. Draw a mark on how the driveshaft is related to the companion flange of differential, separate it from them by removing bolts. If the car has two sections of driveshaft, take away the middle bearing mounting bolts. Lower down the rear of driveshaft and afterward push it out of transmission through front yoke. While taking off shafts, wrap a plastic bag over transmission casing securing it with a rubber band to avoid losing fluid and for protection against contamination. The installation is performed in reverse order as its removal. If rotation has occurred on these components either by means of differential or transmission shafts; then they will not align hence leaving an unaligned shaft that cannot be put into place. Tighten attachment parts to required torque. Engage parking brake after raising vehicle's front end to be held secure by jackstands. Mark relationship between driveshaft and differential companion flange then remove bolts. Prop up transfer case using floor jack Remove mount bolts: slowly lower transfer case about 2 inches (50mm). This will help you detach the front part of driveshaft from front differential while removing splined yoke from transfer case unitize Installation procedure should be done as recounted in preceding paragraph except that new O-ring must be installed on splined yoke together with tightening drive shaft/front diff companion flange bolts accordingly.