Last job was the harmonic balancer bolt on a Duramax. 400ft lbs on that sucker. Not sure whats so special about them that it takes so much to hold em on. Would have been much easier to get a bite with a ratchet head instead of the breaker
My 1986 3/4 drive torque wrench only has a breaker head, no ratchet. It's the 13/16 version. The L872 is too large. Would like to find a ratchet head for it.