AC Compressor belt Install

[Golgo69]

Anyone have a good Go By for this? I was installing my new battery and I noticed my AC belt was frayed. It has been crooked for some time now. I was hoping it would straighten itself out, but guess not. I went ahead and cut it off so it wouldn’t come apart and make a potential mess if other things. Anyhow, I have an 8 rib setup with the added drive shaft pulley. Any help much appreciated!

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[SheepDog]

Obviously, you need to remove the other belts first. I've done the AC belt enough times now that I can do it by just muscling it on there. You need a long breaker bar - preferable a ratchet, to turn the crankshaft. put the new belt around the AC pulley, and behind the crank pulley. Then, use your right hand to turn the engine over with the ratchet while you guide the belt onto the ribs with your left hand, keeping pressure on the belt the whole time.

Because you have that 8 rib pulley on there, you likely wont be able to do it the way that the service manual recommends, which is to use zip ties to guide the belt onto the crank pulley.

I do it like this

 

[Golgo69]

Obviously, you need to remove the other belts first. I've done the AC belt enough times now that I can do it by just muscling it on there. You need a long breaker bar - preferable a ratchet, to turn the crankshaft. put the new belt around the AC pulley, and behind the crank pulley. Then, use your right hand to turn the engine over with the ratchet while you guide the belt onto the ribs with your left hand, keeping pressure on the belt the whole time.

Because you have that 8 rib pulley on there, you likely wont be able to do it the way that the service manual recommends, which is to use zip ties to guide the belt onto the crank pulley.

I do it like this

This video he went over main drive shaft pulley first. Does it matter which way I turn drive pulley

 

[Rod Schneider]

Be shure to only rotate the pulley in the same direction as normal engine rotation. Turning it backwards has the potential to cause the timing chain to jump teeth.

 

[Cobra Jet]

Anyone have a good Go By for this? I was installing my new battery and I noticed my AC belt was frayed. It has been crooked for some time now. I was hoping it would straighten itself out, but guess not. I went ahead and cut it off so it wouldn’t come apart and make a potential mess if other things. Anyhow, I have an 8 rib setup with the added drive shaft pulley. Any help much appreciated!

This thread discusses how to remove the A/C stretch belt (and an available Lisle tool to do it too):
https://www.mustang6g.com/forums/threads/ac-stretch-belt-help-please.175709/#post-3554880

 

[Golgo69]

This thread discusses how to remove the A/C stretch belt (and an available Lisle tool to do it too):
https://www.mustang6g.com/forums/threads/ac-stretch-belt-help-please.175709/#post-3554880

I think I have that thing. Tried it and I got my ass kicked. Couldn’t get it done that way or any other way. I put the main drive belt back on and the blower belt on and made sure everything worked and sounded good and I like fuck it! Guess I’ll be without AC unless I take it to my mechanic. Arms are scratched up, have to be up at 3am, and it 10 pm…..Smgdh….banged out!

 

[SheepDog]

This video he went over main drive shaft pulley first. Does it matter which way I turn drive pulley

Yes, you cannot get the belt over the AC pulley, without first going over the crank pulley and flattening the belt out behind it, just like he does in the video. Only turn the engine clockwise - the direction it rotates when running.

This can be done by one person, but if you have help it is a lot easier. You don't need any other tool. The service manual tells you to use zip ties to hold the belt on the crank pulley.

 

[Golgo69]

Yes, you cannot get the belt over the AC pulley, without first going over the crank pulley and flattening the belt out behind it, just like he does in the video. Only turn the engine clockwise - the direction it rotates when running.

This can be done by one person, but if you have help it is a lot easier. You don't need any other tool. The service manual tells you to use zip ties to hold the belt on the crank pulley.

Got it, thanks. The only thing is that when I try to rotate it's very hard

 

[Golgo69]

Got it, thanks. The only thing is that when I try to rotate it's very hard

And also, I have that 8 rib crank pulley, so I can’t really get around back or the zip tie method. I’m thinking I will have to take that 8 rib pulley off and put it on. If anyone has pulled this off with an 8 rib crank pulley let me know

 

[SheepDog]

Got it, thanks. The only thing is that when I try to rotate it's very hard

Yep. 12:1 compression will have that effect. Make sure its in neutral. If you haven't replaced your spark plugs in a while, this is a good opportunity to knock out both items. The engine is way easier to turn over when the spark plugs are out.

 

[Golgo69]

Yep. 12:1 compression will have that effect. Make sure its in neutral. If you haven't replaced your spark plugs in a while, this is a good opportunity to knock out both items. The engine is way easier to turn over when the spark plugs are out.

lol just had them done this past summer lol it's always something! nothing is ever easy

 

[GT350mustang2016]

And also, I have that 8 rib crank pulley, so I can’t really get around back or the zip tie method. I’m thinking I will have to take that 8 rib pulley off and put it on. If anyone has pulled this off with an 8 rib crank pulley let me know

how did you end doing this? I have the same 8 rib for the procharger and I found it is impossible to wrap the belt behind the crankpulley and than put it on ac….also my belt doesnt really fit very well behind the pulley, got it behind, but cant get it out now (the brand new belt is coming out in pieces)
Did you end up taking the 8 rib away and if so, are the mounting points for the bolts fixed onto the crank pulley or do they fall into the crank pulley and do you end up pulling the entire crank pulley of the car?

thanks!

 

[Golgo69]

how did you end doing this? I have the same 8 rib for the procharger and I found it is impossible to wrap the belt behind the crankpulley and than put it on ac….also my belt doesnt really fit very well behind the pulley, got it behind, but cant get it out now (the brand new belt is coming out in pieces)
Did you end up taking the 8 rib away and if so, are the mounting points for the bolts fixed onto the crank pulley or do they fall into the crank pulley and do you end up pulling the entire crank pulley of the car?

thanks!

Damn Man, sorry to hear that it’s kicking your ass, cause it certainly fucked me up and busted my knuckles up trying to get it on. Long story short, I ended up getting a crank support put on by my mechanic and of course they put that belt back on

 

[Golgo69]

Damn Man, sorry to hear that it’s kicking your ass, cause it certainly fucked me up and busted my knuckles up trying to get it on. Long story short, I ended up getting a crank support put on by my mechanic and of course they put that belt back on

But what I would have done, if I had not gotten the crank support was take the main crank pulley off, but that is what I was and everyone else was/is avoiding

 

[GT350mustang2016]

Damn Man, sorry to hear that it’s kicking your ass, cause it certainly fucked me up and busted my knuckles up trying to get it on. Long story short, I ended up getting a crank support put on by my mechanic and of course they put that belt back on

Its indeed busting my balls big time, arms and hans are bleeding
Got the belt out, no idea what you mean by crank support, you mean like a tool to get it on there?
i have no idea how to proceed now🥲

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