OEM 2003 Toyota 4Runner Alternator

2003 Toyota 4Runner Parts Questions & Experts Answers

• Q: How to replace the alternator on 2003 Toyota 4Runner?

  A: The first step involves removing the V-bank cover followed by engine under cover sub-assy No.1 through the removal of 4 bolts. Begin by removing the fan along with the generator V belt before taking out the battery. The alternator generator assembly requires wire harness disconnect through this process: first remove the bolt holding the wire harness stay, then disconnect the harness connector at the generator assembly and disassemble terminal cap with nut and package terminal B harness free and separate the 2 bolts securing the generator assembly. Begin installation of the new generator assembly by inserting both 2 bolts then torquing them to 43 Nm (438 kgf.cm, 32 ft.lbf) and finishing by adding the wire harness clamp bracket with its 2 bolts torqued to 8.0 Nm (82 kgf.cm, 71 in.lbf). Install the wire harness at terminal B before placing the nut and torquing it to 9.8 Nm (100 kgf.cm, 7 ft.lbf). Then attach the connector to the generator assembly and secure the wire harness stay using the bolt torqued to 8.0 Nm (82 kgf.cm, 71 in.lbf). Install the battery and then the fan before placing the generator V belt. The engine receives its installation with four bolts receiving 29 Nm (296 kgf.cm, 21 ft.lbf) torque value before two nuts on the V-bank cover reach 7.5 Nm (76 kgf.cm, 66 in.lbf).