Engine/Transmission (1994 - 1998) Setting waste gate on PDR HX40

[Woodenhead]

I need to adjust the waste gate on my PDR HX40. For the old 35 the manual says loosen the lock nut, turn the rod and re-set the lock nut. The 40 I have doesn't have a lock nut so I'm guessing you can't just turn the rod. Looks like I need to pull it off completely and set it on the bench where I rotate the link on the end of the rod. I need to set it to around 25 psi (it's at 38 now) to use with my 3B.



Anyone done this before?



Thanks,

Mike

 

[Bodie]

Its kinda a PITA but you do have to pull the acuator and turn the rod then reinstall. I always cut the bracket so I can slide it back in and not bust my boys trying to pull it back far enough past the threads.

 

[Woodenhead]

I ended up removing the 2 bolts on the bracket closest to the front of the truck. Then I could rotate the bracket back to reduce the spring tension and remove the actuator. Turn the actuator, put it in place and rotate the bracket back to position for testing it with the airline. Seemed to work well.



Thanks,

Mike

 

[Dieseldemon]

If you have an air regulator leave the waste gate on the turbo disconnect the hose and hook up the reg and apply 25# of air pressure to the waste gate then disconnect the rod from the gate and turn it until the clevis just fits on the gate that will give you the 25# setting you are looking for.

 

[Woodenhead]

If you have an air regulator leave the waste gate on the turbo disconnect the hose and hook up the reg and apply 25# of air pressure to the waste gate then disconnect the rod from the gate and turn it until the clevis just fits on the gate that will give you the 25# setting you are looking for.

At first I was going to say that sounds easy but... ... . I must be missing something here. I did use a regulator and checked the line pressure with a tire gauge. On my actuator it seems the amount of pre-load on the cylinder/diaphragm will determine how much pressure it takes to make it move and open the waste gate. The amount of pre-load is determined by the rod/clevis length. What your saying will work but won't I still have to hook it up and have the bracket in position to see if it will actuate?



Mike

 

[Dieseldemon]

You do hook it up when you adjust it after you adjust it and have it hooked back to the waste gate apply pressure until the gate just moves (I mean just starts to move) that will be your setting.

 

[Woodenhead]

Ahhh I see. Thanks for the info.