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Thread: How to remove and replace belt

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    Uber Mirage alex16's Avatar
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    How to remove and replace belt

    It's very simple, if your not experienced just have some patience and time.

    Mechanically inclined: 5-10 minutes to complete the job
    Shade tree: 5-30 minutes
    Never done one before 1-2 hours

    I used Dayco 5060485
    I paid $11 on eBay for it, rock auto also carries it for $12-15

    Tools needed:
    12mm box end wrench
    14mm box end wrench
    Long pry bar
    Gloves
    Rag


    First loosen the tensioner nut 12 mm. It's blue colored

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    Then loosen the bottom alternator bolt. This is the most challenging step* the ac lines are extremely close, I gently pushed mine back slightly so my craftsman 14mm would clear. I don't recommend doing that, if you have a flexible head ratchet or an alternative tool to loosen it, it would be better. I was able to break torque on the bolt without the wrench hitting the line. Just be careful.

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    Once you have this lower bolt that you can't see very well from on top of the car looking down loose (just lightly loose)
    Then you can go back up to the tensioner and there's a threaded 12 mm bolt that goes through facing the front of the car. Loosen this all the way until it is almost flush with the threaded part it screws into.

    Now you can push the alternator forward and slide the belt off the water pump. My water pump had a little bit of play in the pulley but not enough to justify a replacement.

    The new belt should go over the compressor then towards the crank pulley. Use the pry bar or a long object to guide it over the crank.

    Next flat side against the water pump up to the alternator. You can put a rag against the core support and gently pry against the alternator to give enough slack to slide the belt over the alternator pulley.


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    Retention the alternator using the tensioner 12mm bolt.

    Check the belt for tension, it's difficult to find but there's a sweet spot, where the belt is just tight enough it won't squeak with full load (headlights high beams ac full rear defrost) yet doesn't feel super tight. A method I do is get it kinda tight and lightly tighten the bottom 14mm and top 12 mm, if it squeals I turn it off the engine and loosen the bottom 14mm and top 12mm and adjust with the 12mm adjuster some more, it's a time consuming process but it will give you longer life on pulleys and the belt. I did this twice with the original belt.

    This is the tensioner with the new belt, as you can see much less tension with the new belt. I think at $11 I will be replacing the belt at 50-60k from now on as it is so important and a fresh belt requires less tension than a worn belt.

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    Any questions feel free to ask.


    2014 ES F5MBD aka 5MT. I am a full time Uber driver, if you want to drive for uber DO not sign up without my referral code for a bonus .

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        click to view fuel log View my fuel log 2014 Mirage ES 1.2 manual: 44.8 mpg (US) ... 19.1 km/L ... 5.2 L/100 km ... 53.9 mpg (Imp)


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    Uber Mirage alex16's Avatar
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    It's also worth mentioning, I covered my tensioner threads with dielectric grease to prevent corrosion on the threads, I used brake clean to clean them prior to doing the belt replacement.
    2014 ES F5MBD aka 5MT. I am a full time Uber driver, if you want to drive for uber DO not sign up without my referral code for a bonus .

        __________________________________________

        click to view fuel log View my fuel log 2014 Mirage ES 1.2 manual: 44.8 mpg (US) ... 19.1 km/L ... 5.2 L/100 km ... 53.9 mpg (Imp)


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    Quote Originally Posted by alex16 View Post
    It's also worth mentioning, I covered my tensioner threads with dielectric grease to prevent corrosion on the threads,
    Great tip and it earned you a thumb

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    I bought the same belt as you (DAYCO 5060485) but I couldn't get it on, it was too tight. I was able the put the old one back on. The last step I did was trying to thread the belt over the alternator pulley.

    I even removed that wire on the right side of the alternator so that I could move it forward another inch.

    I just looked up the part specs and the Dayco 5060485 is 21.2" while the ACDelco 6K483 is 21.8". I wonder if that .6" makes it easier to get on?
    Last edited by Madison320; 01-07-2018 at 11:06 PM.

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    Administrator Daox's Avatar
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    Are you sure you had the alternator adjustment all the way in?
    Custom Mirage products: Cruise control kit, Glove box light, MAF sensor housing, Rear sway bar, Upper grill block

    Current project: DIY Nitrous oxide setup for ~$100

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        click to view fuel log View my fuel log 2015 Mirage DE 1.2 manual: 47.2 mpg (US) ... 20.1 km/L ... 5.0 L/100 km ... 56.7 mpg (Imp)


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    Quote Originally Posted by Daox View Post
    Are you sure you had the alternator adjustment all the way in?
    Yup. And it was really easy to put the old belt back on.

    The ACDelco belt is smaller than the Dayco belt according to rockauto. Amazon says the Dayco belt is smaller. This is why I hate working on cars! I wish the OEM dealer had the length specs but they don't, at least not on any of the OEM sites I looked at. I'm going to go to the dealer today and overpay for the OEM, at least I'll know it's right.

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        click to view fuel log View my fuel log 2014 Mirage 1.2 automatic: 39.7 mpg (US) ... 16.9 km/L ... 5.9 L/100 km ... 47.6 mpg (Imp)


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    Administrator Daox's Avatar
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    Well, the belt part number includes its length. I forget the exact nomenclature, but its probably a 5 rib and 60cm long belt or something like that.
    Custom Mirage products: Cruise control kit, Glove box light, MAF sensor housing, Rear sway bar, Upper grill block

    Current project: DIY Nitrous oxide setup for ~$100

        __________________________________________

        click to view fuel log View my fuel log 2015 Mirage DE 1.2 manual: 47.2 mpg (US) ... 20.1 km/L ... 5.0 L/100 km ... 56.7 mpg (Imp)


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    Administrator Daox's Avatar
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    Here it is:

    http://www.daycoproducts.com/part?ca...mber%3D5060485

    Its a 48.5 inch long belt. So, just measure your OEM belt and adjust the 485 to whatever you measure.
    Custom Mirage products: Cruise control kit, Glove box light, MAF sensor housing, Rear sway bar, Upper grill block

    Current project: DIY Nitrous oxide setup for ~$100

        __________________________________________

        click to view fuel log View my fuel log 2015 Mirage DE 1.2 manual: 47.2 mpg (US) ... 20.1 km/L ... 5.0 L/100 km ... 56.7 mpg (Imp)


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    Quote Originally Posted by Daox View Post
    Here it is:

    http://www.daycoproducts.com/part?ca...mber%3D5060485

    Its a 48.5 inch long belt. So, just measure your OEM belt and adjust the 485 to whatever you measure.
    48.5 is 1231mm which corresponds to the 6PK1230 metric part number for Dayco.

    But the OEM part number is 1340A146. Does that mean the OEM part is 1340mm? That would make sense. The Dayco would probably still fit but be tight since it's 110mm shorter than OEM.

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        click to view fuel log View my fuel log 2014 Mirage 1.2 automatic: 39.7 mpg (US) ... 16.9 km/L ... 5.9 L/100 km ... 47.6 mpg (Imp)


  12. #10
    Administrator Daox's Avatar
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    I highly doubt the OEM belt is 1340mm. I would take yours off and measure it. That way you know exactly how long it is and can get the correct size belt.


    Custom Mirage products: Cruise control kit, Glove box light, MAF sensor housing, Rear sway bar, Upper grill block

    Current project: DIY Nitrous oxide setup for ~$100

        __________________________________________

        click to view fuel log View my fuel log 2015 Mirage DE 1.2 manual: 47.2 mpg (US) ... 20.1 km/L ... 5.0 L/100 km ... 56.7 mpg (Imp)


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