Mr. HDX, can you explain the Johnson bar? I’m only familiar with that term in a Manitowoc crane, it is (was) used to control the torque converter on the early Vicon machines. Thank you very much, you are a wealth of knowledge, Will in the pnw. On the Clark 8000 series Automatic transmissions, It only controls, Forward Neutral and Reverse..Same as what your application was. Not all the shift towers on the Clarks were the same. Maybe 075 can post a picture of the other style. These ones like the picture I posted,you would put the shifter in any gear you desire then push the Johnson Bar either ahead or to the rear Forward or reverse. On the tower you can see a slot on the R/H side of each gear, That is the "Lock up" position for every gear. When locked up it gives direct drive whereas when in the converter mode ,the clutches will slip . when they slip like that it creates heat and will eventually over time de-laminate the clutch packs. The problem with the Clarks was the retarders. the Young oil coolers were just not enough to cool the oil fast enough. You would start down a mountain and apply (Step on) the retarder pedal and in no time the trans oil temp was at 300 degrees. Having said this though,They were a pretty darn good transmission. I am always on the lookout for one to install in one of my restored trucks..(The WHD Hayes I have). It is a big job to install one though because they sit so high between the frame rails. Have to alter the bottom of the water tank to get them to fit
sure does i`d like to ride a round or two in one of those rigs but don`t see that happening .been in about everything else except running on a 300 foot deep frozen lake. thats not happening eitherNot a dumb question at all. That's what we are here for... Ask away. We haul from all over the place Sometimes we can get say three loads a day if we are what we call hauling short... That would be around 20 miles each way Then there is the other end of the scale where we get 1 maybe 1 1/2 loads a day hauling from as far out as 60 miles. A lot depends on how much adverse (UP-HILL) we have to pull. So sometimes we will get a short load ,Get dumped at the DryLand Sort and then head out for a long trip. sometimes we get back to Sarita with the load and sometimes we end up parking along the road loaded and pick the truck up again in the morning to get the load to the dryland sort. There have been a few "Cream Runs" where I have hauled 12 loads to the Sort in a day. But very rare and very close to the dryland..Those are the "Fun Ones". If we are hauling from the back end of the Roanne Way out at the end of Haddon Mainline all the way to Sarita and the roads are rough because the grader cant keep up, then it would be one load for that day. We try and keep as close to 100 meter loads as we can. That means about 100 tons per load. 1 Meter equals 1 ton or 2000 lbs. does this answer your question petepilot???
I went for a ride in one of the kenworth’s at Port McNeill when I was about 5 or 6. I Didn’t have school so he took me to work with him. When the lowbed showed up he asked the driver if I could go for a ride. The driver was a super nice guy, he let me shift! So I guess I helped haul my Dad’s D8! I think my ears are still ringing though. Detroit’s weren’t called a buzzin dozen for nothing!This is also a replacement shifter gate, the original ones were chrome. They wore out the detentes and the arm from use and got sloppy and started to rattle as you drove,Not that you could hear it over the trans any way .And if you shift with the palm of your hand with fingers dangling it will bite ,Ask me how I know