Throttle linkage MCI7

[junkman42]

Can anyone tell Me if there are any bearing points or supports that need lubricating on the throttle linkage on the MCI7.  It would seem that there must be some supports along the length of the rod that runs from the front of the coach to the engine bulkhead!  I can not find anything in the manuals and I have a throttle that is stiff and sticky in that it never goes completly to a idle.  I have to step on the bottom of the pedal to get the throttle to a dead idle.  Help.  Regards, John

[buswarrior]

In my MC8, in the spare tire compartment, there are cranks/levers/pivots on the accelerator linkage that have grease zerks, and where the rod exits the tunnel above the transmission, down through the holes in the floor down the back, there are more.

If necessary, pull the pins from the linkage in a couple of places to get each one nicely freed up and moving lightly. Adding more springs only makes your pedal effort greater, no fun on a long day's drive.

happy coaching!
buswarrior

[mikelutestanski]

Hello:   If your aisle is open then about one or 2 feet back from the front of the aisle on the right where the throttle rod slide is a bearing.  this one is usually the culprit.  I went through the floor from the top to lubricate it but it did not work anyway. You might be able to throw enough pb blaster down the tunnel from the front tire bay but I doubt it..   I finally put in an air throttle and left the rod in place..   Your choice.    
   The reason this rod corroded on my 7 was because the floor underneath.. over the leveling valve rotted out and it rusted everything up..  You can get at that area from underneath but make sure you block the coach correctly.  The ceiling is aluminum and is rivited if my memory is correct.   We had to replace  the whole top panel anyway..  ..   That was 15 years ago so my memory may be hazy but the symptoms you mentioned are familiar...    
   Good luck   and happy busssin    mike

   i say this may be the problem after you check everything else out including the pin on the pedal which is a real good catch.. 

[busshawg]

After you grease it and find it still skicky , check your pin on the peddle itself. They do have a habit of sticking, most people with jakes will notice the jakes not coming on when the paddle is relaesed and think they have a jake problem when all it is, is that nasty pin freezing up.

Grant

[DaveG]

Good point busshawg, the dissimilar metals between the pedal and the pin/base are always suspect in this situation. That is one of the nice things about throttle by wire!

[junkman42]

Thanks for all the input , I have lubed all of the points on the front pedal linkage and the rear linkage the problem seems to between the front and rear bulkhead.  I have no clue how the rod is supported and if it is in the manuals I can not find it.  What kind of bearing is located behind the front bulkhead?  I am about one step away from air power!  Thanks,John

[mikelutestanski]

Hello:   If memory serves it is a brass  bushing but exactly what   is lost to me at the moment.   regards  mike