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southern truss

Mack E6 4 valve, valve bridge and lash adjustment

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I'm working on an 87 Mack E6 300hp 4 valve engine and I'm having trouble setting the valves correctly, not sure what the correct procedure is any help would be great, thanks

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What procedure are you currently using????

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I tried to set them at what I thought was TDC but when I turned it over the intake valves loosened also I noticed the valve bridges seem loose and I wasn't sure what those are to be set at, then I talked to a friend and he said he thinks there's a weird camshaft in that engine and that I need to follow the proper procedure so I stopped there

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Marks should be on the front vibration dampner..

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25 minutes ago, wilbur said:

Marks should be on the front vibration dampner..

yup  should be either on the damper or on fly wheel 

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8 hours ago, southern truss said:

I tried to set them at what I thought was TDC but when I turned it over the intake valves loosened also I noticed the valve bridges seem loose and I wasn't sure what those are to be set at, then I talked to a friend and he said he thinks there's a weird camshaft in that engine and that I need to follow the proper procedure so I stopped there

The cam is for a Dynatard , Macks version of a Jake Brake.  The big nut on the dynatard adjustment , dont over tighten. It distorts the housing and keeps the piston from working. I forget the torque spec but isnt much. Like #30. I think it took a 1 1/16 or 1 1/8 socket.

 

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