Genuine Nissan Pathfinder Transmission Assembly

Nissan Pathfinder Transmission Assembly Parts Questions & Answers

• Automatic Transmission Assembly
  31020-4EX17
  Q: How to remove and install a Manual transmission in the Nissan Pathfinder?

  A: Disconnect the battery cable and remove the Crankshaft Position sensor, shift lever, and Transfer Case shift lever (if applicable). Raise the vehicle, disconnect the electrical connector, drain the transmission, and transfer case lubricant (if applicable). Remove the driveshaft(s), exhaust system components, starter motor, clutch release cylinder, and torsion bars (if applicable). Support the engine and transmission with a jack, remove the bolts, insert a small amount of grease, lubricate the inner surface, and apply a light film of grease. Install the clutch components (if removed) and clean the bell housing-to-engine block mating surfaces. Apply a 1/8-inch bead of RTV sealant and raise the transmission. Install the transmission-to-engine bolts and the cross member. Install the transmission mount, carefully lower the transmission extension housing, and remove the jacks. Install the torsion bars (if applicable), the transfer case and shift linkage (if applicable), and the various items. Plug in the electrical connector, connect any other wiring, remove the jackstands, and lower the vehicle. Install the shift lever(s), fill the transmission with the specified lubricant, connect the cable to the negative terminal of the battery and road test the vehicle.
• Automatic Transmission
  310C0-44X75
  Q: What are the considerations and tools required for overhauling a manual transmission?

  A: Overhauling a manual transmission should be left to a transmission repair shop. It is possible for an inexperienced mechanic to rebuild it if special tools are available. These tools include internal and external snap-ring pliers, a bearing puller, a slide hammer, a set of pin punches, feeler gauges, a dial indicator and possibly a hydraulic press. Before taking the transmission apart, it helps to have an idea of what is malfunctioning and make careful notes.
• Manual Transmission Assembly
  320A0-0W082
  Q: How to properly remove and reinstall the Automatic transmission along with the torque converter as a single assembly?

  A: The transmission and torque converter must be removed as a single assembly. If you try to leave the torque converter attached to the drive plate, it will cause damage. The drive plate is not designed to bear weight. First, disconnect the cable from the negative terminal of the battery. Raise the vehicle and support it on jack stands, removing the skid plate and skid plate crossmember if equipped. Drain the transmission fluid. On a four-cylinder Frontier model, detach the Throttle Valve cable from the transmission and temporarily reinstall the transmission fluid pan. Detach the Shift Cable from the manual lever and bracket. Mark the yokes and remove the driveshaft; on 4WD models, remove both driveshafts. Remove obstructive exhaust components, the Crankshaft Position sensor, and the starter motor. Trace the wiring harnesses from the transmission and disconnect them. Remove the inspection cover and mark the relationship of the torque converter to the drive plate. Extract the torque converter-to-drive plate bolts, turning the crankshaft for access. Extract the fill/dipstick tube and its bracket. Detach the fluid cooler lines from the transmission, discarding sealing washers. On 4WD models, remove the Transfer Case, though if the main aim isn't transmission replacement, one might keep the transfer case attached. Just disconnect the shift rod and the electrical connectors from the speed sensors, and detach the vent tube. Support both the engine and transmission using appropriate jacks. Remove the bolt holding the transmission mount to the cross member. Lower both slightly, then unbolt the transmission from the engine. Slide the transmission back to disengage it from the engine block dowel pins, ensuring the torque converter is detached. Clamp locking pliers on the bell housing to prevent the converter from falling. For installation, confirm the torque converter's engagement in the pump. If you've detached it, lubricate the converter rear hub and install it onto the front input shaft. Raise the transmission into position and align the holes of the torque converter with those in the drive plate. Carefully push the transmission forward, ensuring dowel pins engage with the bell housing. Mate the transmission with the engine without gaps. Install and tighten all bolts while verifying a complete mate between the engine and transmission. Raise the transmission's rear end, reattaching the cross member. Remove supporting jacks. Reconnect the torque converter-to-drive plate bolts and reinstall the dipstick tube. Reattach the starter motor and torque converter inspection cover. With new sealing washers, reconnect the transmission fluid cooler lines and the transmission's electrical connectors. Reconnect the shift cable, and on 4WD models, reinstall the transfer case. Reattach the driveshaft(s) and adjust the shift cable. On four-cylinder Frontier models, reconnect the Throttle Valve cable, install the fluid pan with a fresh gasket, and tighten its bolts. Reattach any removed exhaust components, lower the vehicle, and refill the transmission with the specified fluid. Finally, run the engine and check for any fluid leaks.