Remove alternator

[to01297]

Hi, how do I go about releasing the tension on the alternator belt of a ford duratec engine, many thanks

[Ian Mackenzie]

If your alternator is mounted on the inlet side it will be a solid mounting, there will also be an idler pulley the top of the engine next to the inlet manifold, this is spring loaded and it tensions the belt, there will by a hexagonal hole in the pulley housing where you can put an allen key in (as a lever to release the belt tension). You will then be able to slide the belt of the water pump pulley and remove the belt.

Cheers

Ian

[to01297]

Hi Ian, thank you for your help, the alternator has been removed

[John Vine]

Just to add that the serpentine-belt tensioner on my R400D has a hex bolt rather than a hex hole.  Apply a 17mm ring spanner and turn anti-clockwise to release the belt.

JV

[7 wonders of the world]

And when refitting the belt remember the water pump on the Duratec runs anti clockwise too.

[roachw]

Hi all, is it the same or similar process for the 1.6  sigma please?

 

[ChrisC]

Yes, but the tensioner is lower on the exhaust side

[roachw]

Thanks Chris, I think I can see which one is the tensioner now.

just gonna have a crack at it now...

regards,

Will

[DJ.]

That will work OK for the belt on the sigma although it is a fiddle.

If you plan to remove the alternator on a 125, be prepared to remove the water pipe that runs through the manifold. The stud in the head makes the alternator a pain to remove as well as it won't slide off without hitting the chassis. 

I had to pull out the alternator as far as possible to grab the unthreaded part of the stud with a stilson! Before refitting, I welded the nut onto the stud to make it into a third bolt which makes removal a lot easier.