81 COE Freightliner w/cummins help

HI again.
Nice pic of your truck. I'll try to get a picture of my dash to see if it is like yours.

I cannot find a divider switch on my dash but I think I see where it may have been.

Also, I hauled a couple loads of corn with it today and everything seems to work as it should. It seems to have enough power for what I'm doing, so I don't think I'll need to modify the injection pump.
Will be checking back in a day or two!

 

Hi all, thank you all for some GREAT feedback!
I have used the truck the last two days and it has worked better than I expected.
Power is ample for the approx. 850 bu. hopper trailer, I'm not going to change a thing on the injector. It gets up to speed better than the straight trucks I've been using!!!
Just curious on what kind of goodies are available though, let me know what's out there.
Need some tips on a couple more things....the tach and speedo are both not working.
It has some kind of time clock (big black box things) that is used for both the tach and speedo with cable drives on each one. Are the drive cables broken perhaps ??
Also another note - it seems as tho it is governed to only go about 55 mph. Just guessing as the speedometer is not working. (That's not an issue as its plenty fast enough for me, just would like to hear what you guys think about that).
Have yet to find the divider switch, although there is a couple vaccum lines coming into a tee that are plugged off lying on the engine cover coming out from under the dash area. Yea, I think i'll need a switch! (MRBULLFROG92)
I still have to chase down the lines and see what else may be missing.
I'll post a pic of the dash and truck if I find a way to do it here.
Everything else seems to work great as far as lights,guages,transmission, brakes ect ect. Oh yea, the thing has no power steering... after a few trips to the elevator my arms were sore! I feel for the over the road guys that dealt with no power steering on a day to day basis.
Again, Thank each and everyone of you for the pointers !
P.S. When the truck idles it vibrates and rattles a BUNCH... but if I gas it up just a tad it hits a sweet spot where it is not idling to fast and also stops the vibration .
Can I turn the idle up on the injector and if so how?
Thanks

 

Hi Bullfrog, My great truck story has a sad chapter ... everything worked great with the truck for the week that I have got to use it, then a couple days ago I was going to pull the loaded trailer (900 bushels of corn around 27,000#) out of a soft field ... put the truck in low gear and bang! something in the differential let loose. It makes a loud bang approximately each time the driveshaft makes a full revolution at the differential. Oh, and it does not move. I have since noticed that every part on the front differential has been blue glued!!! I've manually engaged the 2nd differential through the power divider and pulled the axles out of the first differential and capped the open ends with steel plates. It doesn't make any noises with the axles pulled so I hauled the corn (10 miles round trip) to the elevator and have since parked the truck. I'll be looking for a Rockwell differential in the future. I do have a 1979 IH Cabover transtar that has a different make housings I was kinda hoping may bolt into the Freightliners place? Any thoughts?

 

1981 Freightliner