How to replace both the AC and Serpentine belts on a 2012 Mazda 3 i, without any special tools. To replace the serp, you must remove the AC belt. There are many ways to do this, I personally cut the AC belt off.

The serp belt is easy to remove and install due to the tensioner. The AC belt is not difficult to install but requires one of several methods - either a special tool, strong hands, lowering the AC compressor, or using zip ties. I chose to use zip ties and had no issues with the installation; if the belt is off by a few groves, simply push it as it guides onto the AC pulley.

**Do not turn the engine CCW, or use a torque wrench to loosen. Instead, zip tie the other side and torque Clockwise to avoid harmonic balancer issues. Also, use a regular ratchet or breaker bar to loosen so you do not damage your torque wrench.**

Do be sure to buy strong zip ties. I used 45 lb strength, tried with only four, and if you watch closely, the first set of four broke. On the second try, I attached four, walked them up from about 3:00 counterclockwise to 12:00, then put four more on the next slot for a total of 8; these worked well. The zip ties will be tight against the serp belt and the AC belt, so loosen the serp to easily get all zip ties removed once installation is complete. Tighten the serp, and you should be good to go!

Saved over $150 on this job compared to a mechanic in Boston...complete time should be well under an hour with the right parts and tools, listed below.

Amazon Affiliate Links:
Parts:

Bando 6PK1305 - 1305mm (51.2in) OEM Mazda 3 Serpentine Belt https://amzn.to/2waPsHQ
Gates K050264SF - 27in OEM Mazda 3 AC Belt https://amzn.to/2JNlGLe
Splash Shield (Passenger Side) BBM4-56-114B - https://amzn.to/3kllkhQ

Tools:

14 mm socket (Tensioner Pulley) https://amzn.to/2JQdjhK
21 mm socket (Lug nuts and crankshaft) https://amzn.to/2wakL5q
12 mm socket (AC heat shield) https://amzn.to/2JQdjhK
10 mm socket (Splash Guard) https://amzn.to/2JQdjhK
Phillips Head (Splash Guard) https://amzn.to/2w5BEhA

1305mm / 51.2in Belt (Serpentine) http://amzn.to/2oIqPfn
27 in Belt (AC) https://amzn.to/2waPsHQ
Zip Ties (8 45lb tensile strength ties worked for me) https://amzn.to/2riANFE
Needle Nose Pliers (To remove zip ties) https://amzn.to/2Ifcwd2
Torque Wrench https://amzn.to/2jriSrL
6" Socket Wrench https://amzn.to/2JQdjhK
Scissors
Jack https://amzn.to/2HM2xNc
Jack Stands https://amzn.to/2w7GVFC

00:00 Overview, tools, materials
00:27 Jack car, remove passenger front wheel
01:18 Remove splash guard
01:44 Belt overview
01:56 Cut off old AC belt
02:07 Old belt condition
02:17 Remove serpentine belt
02:49 Inspect pulleys
03:11 Install new serpentine belt
03:58 AC belt install overview
04:44 AC heat shield removal
05:23 AC belt pre-positioning
05:28 Zip tie installation
05:56 AC belt install *Do not go CCW as shown, go CW, sorry!*
06:56 Final belt positioning

Disclaimer:
Due to factors beyond the control of Oliver Porter, I cannot guarantee against improper use or unauthorized modifications of this information. Oliver Porter assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. I recommend safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of Oliver Porter, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not Oliver Porter.

Hochgeladen am 25.06.2017   Problem melden   Dieses Video bei YouTube   Oliver Porter bei Youtube