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Bad alternator how do i replace alternator on '03 explorer 4x4

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Disconnect the negative clamp on the battery. Remove the bolt on the adjustment arm (the one with the slot) of the alternator. Loosen the pivot bolt at the bottom of the Alt. Swing the alt inward to loosen the belt. Take the belt of the pulley. Take off the wires noting where they attach. Remove the pivot bolt. You should be able to take the alt off now. Reverse the sequence but when adjusting the belt tension pry the side of the alternator with a bar so the belt can only be deflected about three quarters of an inch. Tighten the adjustment bolt. Don't over tighten the belt. It'll prematurely wear your bearings. Don't under tighten. It'll squeal.

Posted on May 08, 2009

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Do yourself a favor. When buying a New Alternator have them check it before taking it home? I had a bad incident that I ended up with, a new bad alternator and one extra long day.
Removal:
Disconnect the battery cable. Remove the drive belt from the accessory pulleys. Detach the electrical harness connectors at the alternator. Remove the nut and washer to the red battery cable at the alternator. Remove the two front alternator bolts. Remove the rear Alternator support bracket retaining bolts and the support bracket. Remove the alternator.
To install:
Place the alternator in position and loosely install 2 front alternator retaining bolts.
Install the alternator bracket and 3 alternator bracket bolts. 
Tighten 2 front alternator retaining bolts
Connect 2 electrical hardness connectors to the alternator assembly.
Connect the positive battery cable and install the nut and washer.
Rotate the drive belt tensioner away from the drive belt and install the drive belt on the alternator pulley.
Connect the negative battery cable.

Good luck and hope this helps, Start the engine and check for proper charging system operation. 

Posted on May 08, 2009

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