Should be way more thread sticking up on adjusting screw. I use the 6 in lb wrench, basically finger tight.
06 Mack AC427 running rough/low power/black smoke
Discussion in 'Mack Forum' started by devedo, Feb 21, 2019.
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Final update. Pulled the oil pan and inspected. Cam lifters were broke which is why the adjusts were outta wack trying to reset overhead.
Gonna be tearing this one apart and replacing likely the cam, all lifters, and checking for any push tube damage.spsauerland Thanks this. -
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devedo Thanks this.
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Update:
So yes check your H rings. Ring on five intake was loose. Looking down the tube looked fine, but double checked pushing an extension up through the bottom on all of them and it slid right up. Rear head got taken off and new oversized ring installed.
Currently going through the reassembly. And overhead is looking way better than before.Attached Files:
spsauerland Thanks this. -
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