Mitsubishi Repair Problems? Ask a Mechanic for Answers ASAP
Hello I will help you with your question,
The bolt will break if it is overtorqued. With a properly calibrated torque wrench and a dry bolt and seating surface torque a new (from the dealer) bolt to 133 ft lbs.
If it breaks after that check the fit of the balancer to the crankshaft
Let me know how I can help
If the balancer does not mate properly with the crank then you will have repeat failure. You need to determine which is the problem, the crank or the balancer. If it is the crank replacing the engine is less money than doing the crankshaft as I would not replace just the crank I would rebuild the engine.
The Compressor does put more strain on the balancer but it would be the fit of the balancer that is the weak point. If the compressor turns normally by hand, the system is not overcharged a new compressor would not change the situation.