We found the following complaints for MACK CXU612 (2011)
Read complaints for MACK CXU612 (2011)
I am a maintenance mechanic for a large trucking firm. On 4 oct 2011, i checked the torque on the 5th wheel bolts of unit 11054 because i could see that the 5th wheel was sliding on the frame. The bolts were defective - yielding prior to reaching the recommended torque of 236 ft.lb. I adjusted the torque wrench to 200 ft.lb., its lowest setting, and could not get any of the bolts to hold. I replaced all ten bolts with 5/8" grade 8 hardware instead of the factory 16mm 10.9 metric because that was all we had available. There was no interference between the 5th wheel bolts and the huck rivets on the frame rail. The bolts were weak.
I am a maintenance mechanic for a large trucking firm. On 4 oct 2011, i checked the torque on the 5th wheel bolts of unit 11054 because i could see that the 5th wheel was sliding on the frame. The bolts were defective - yielding prior to reaching the recommended torque of 236 ft.lb. I adjusted the torque wrench to 200 ft.lb., its lowest setting, and could not get any of the bolts to hold. I replaced all ten bolts with 5/8" grade 8 hardware instead of the factory 16mm 10.9 metric because that was all we had available. There was no interference between the 5th wheel bolts and the huck rivets on the frame rail. The bolts were weak.
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