anyone change an alternator on 99 5.4L?
 

I need info on how to change an alternator on my 99 f150 5.4L. links or a write-up would be great. Ive searched, but nothing directly realted. I even checked the tech articles.

Service and Repair
REMOVAL

Disconnect the battery ground cable. NOTE: When the battery has been disconnected or reconnected, some abnormal drive symptoms may occur while the powertrain control module (PCM) relearns its fuel trim. The vehicle may need to be driven 18 km (10 miles) or more to relearn the fuel trim.
Remove the drive belt.

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Remove the bracket bolts.

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Remove the (A) bolts and the (B) generator (GEN) .

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Disconnect the generator electrical connections.
1 Disconnect the generator electrical connectors.
2 Remove the generator B+ cable nut and washer assembly.
3 Disconnect the generator B+ cable.

INSTALLATION

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Connect the generator electrical connections.
1 Connect the generator B+ cable.
2 Install the generator B+ cable nut and washer assembly.
3 Connect the generator electrical connectors.

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Install the generator.
1 Position the generator.
2 Install the bolts.

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Install the bracket bolts finger tight, then tighten to specification.
Install the drive belt.
Connect the battery ground cable.

It's very easy.

The hardest part for most is getting the belt off. Use a 1/2" breaker bar and a piece of pipe move the tensioner just enough to slip the belt off the alt leave the belt where it is after that.

Also, take the alt out BEFORE you try to unbolt and unhook the wires

good luck-

wow, thanks

Yeah , I think it's easier without the instructions myself :lol:

im confused. how is a piece of pipe gonna move the tensioner? what is the proper tool to use? do you have any pics of removing the belt tensioner your way?

im probably over thinking it, but I want to make sure before I begin this proccess.

LOL, Kinda, that's okay -

hcmq was suggesting a pipe to slide over the handle of a breaker bar is all - makes it easier if you happen to have one handy..

On the tensioner in the middle there is 1/2 recess were a 1/2 drive breaker bar or ratchet incerts into. When you apply pressure to it it loosens the belt , you'll get a better idea of what I'm talking about when start working on it..


Remove bolts "A" - unhook wires , then remove bolt "B"..

Bolts "A" -

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MISC. Pic -

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Unless you are incredibly buff like me, sometimes it's hard to just move the tensioner with a wrench. Bar on said wrench would give you more leverage.

Adrianspeeder

The breaker bar with a cheater pipe for leverage is very important. I struggled putting the belt back on while holding tension. This is definitely a knuckle buster but not a difficult task. Good Luck!

Huh, I don't have a wrench that fits the tensioner.....??? :lol:

I never use a cheater pipe - just a Blue Point half " breaker bar , takes all of 2 seconds.. Wanna arm wrestle speeder :devil:

I take that back , I use a cheater pipe on that freakin EGR pipe bolt :D

:beers:

If you don't own a 2" piece of pipe a couple of feet long you should really get one.
Great tool, makes men out of boys. :lol:
I couldn't imagine taking the wheels off Ford products with the 14" lug wrench they provide.

Sorry I was in a hurry when I typed that and prolly made a bad assumption!

Thanks everyone for stepping up!

Some more drawings that might help -


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Use the (B) 1/2 inch square hole in the drive belt tensioner pulley hub to rotate the (A) drive belt tensioner clockwise and remove the (C) drive belt.

A little tip - when I rotate the tesioner down to loosen the belt , on the 5.4L you can slide the breaker bar behind the radiator hose support bracket to keep tension off the belt while you remove the alternator. I never remove the belt, just releive the tension enough to slip it off the alternator..

thanks, those really helped.
oh and i always use a cheater bar.
i was confused because i didnt know, i was uppose to use a 1/2". im use to working on imports and not domestics. lol.