Reason to replace : High pitch squeak recurs few months after new belt replacement . The tensioner spring lost its tension and will eventually causing belt slippage and high pitch squeak intermittently. There are 2 12mm screw on the tensioner. However, the upper one is very difficult to reach as the space is tight between the chasis and the pulley. The job takes me 1.5 hours to complete.
Step 1: loosen the belt ( You should be familiar with belt change) by using a 14mm wrench.
Once the belt is loosened, the lower 12mm bolt showed up.
The new tensioner is made by the same OEM Bangdo. The old pulley itself is still in shape.
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