How to Change the Serpentine Belts on a Mazda CX9 3.7L V6
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- Опубликовано: 28 авг 2024
- How to how to change both serpentine belts on a first-generation Mazda CX9 equipped with the 3.7L V6. This engine is also found in other Ford and Lincoln models from the same generation. This is a 2015 model. A squeaking is an indication of the belt slipping, therefore it’s stretched. I would recommend replacing both and also checking the tensioner to ensure it’s not requiring a replacement as well. The tensioner can fail by not providing sufficient tension or having the pulley bearing fail. A pad tensioner will typically not allow the belt to tighten and potentially bounce when the engine is running. #mazdacx9 #stretchbelt #ford
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Tools/Supplies Needed:
-new serpentine belt
-new stretch belt
-cable ties
-long screwdriver
-phillips screwdriver
-adjustable wrench
-10mm socket with ratchet
-jack and jack stand
-21mm socket
Procedure:
Elevate the vehicle, we are required to remove the passenger side wheel. Remove the hubcap, then I can access those lug nuts. The lug nuts are 21 mm. Remove the wheel. Use a jack stand under the subframe as a safety.
There is a plastic cover that is required to be removed to gain more access to the serpentine belt. Four clips need to be removed. A Phillips screwdriver is required to unscrew the center portion of the clip. Once done, either try to pull the clip out or pull the cover out.
Next the coolant reservoir needs to be unbolted and pulled off to the side. Three 10mm bolts hold this in place. Push it over towards the engine. Do not disconnect the coolant lines.
The tensioner does require a special tool with a 3/8" adapter. There is not enough room to fit in a ratchet unfortunately. However there is a way around this, an adjustable wrench can be used to grab onto the top portion of the tension.
As you can see once I have that adjustable wrench in place, it can be used to pull back the tensioner to remove the belt.
It is a bit tricky to remove the belt while relieving the tension as there isn’t much room to work. A standard screwdriver can also be used to help assist it off one of the pulleys. Typically taking the belt off the smoothest pulley is the easiest option. Always make a note of how the belt is routed. Next is the stretch belt. This particular engine, it’s used for the power steering pump. Use some form of cutters to remove the old belt, this is by far the easiest way.
For installing the new belt, there are tools available however due to the limited space, it was unable to be used. Another option, which I used as cable ties. The belt is first installed onto the crank pulley, then pushed on as far as possible onto the power steering pulley. The power steering pulley has various holes where the cable ties can be routed through, holding the belt in place. I started out using one cable tie per hole, however due to the excessive amount of tension, they broke. So two cable ties are recommended per hole, a total of four cable ties were used. the crank is turned at the same time in the clockwise position using an 18 mm socket with either a half inch drive ratchet or Johnson bar.
I would highly recommend having a helping hand for this, it can be hard to direct that belt in place while turning the engine over. I found using a large standard screwdriver to help rotate the power steering pulley did help. Once that belt is on, then the cable ties can be cut off. They can be cut off from up through the bottom.
After that is installing the larger serpentine belt with the tensioner, again I would recommend having help for this unless you can wedge something between the wrench and firewall to release the tensioner. Route the belt over the ribbed pulleys first and finish up on the smoothest pulley.
When done, the plastic cover can then be installed. Line it up with the holes and then snapped in each of the individual clips. Install the center screws to expand the clips. Reinstall the coolant reservoir and tighten those 10 mm bolts.
Ensure the hub face is clean on the back of the wheel and the rotor, then install the wheel. Finally tightening those 21 mm lug nuts and finish up with clipping back on the center hub cap. Start the engine to make sure everything is operating as it should.
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I'm using this video as a companion to an alternator and serpentine belt tensioner replacement. This is not fun, not one but of it.
Excelente tutorial
Thank you!
Tnk you for this.....
You’re welcome!
Please, What is the belt number. is it 6Pk1140 or 6Pk1150
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Looks like a super sh*%ty job to do
It is, wasn’t fun at all.
currently doinng this and its not fun at all im making no progress