I found the directions to test the VRV. My question is do you have to have a seperate pump and gauge or can you use the combo kind that have the pump with the gauge in it link a vacuum bleeder? and if you can how do you hook it up. The instructions I have call for pump to top post and gauge to bottom post and help would be greatly appreciated thanks for the help

 

I used a vacuum pump w/gauge AND a separate gauge when I did mine.. Worked like a charm!

Gary

 

EMD_Driver, Thanks for the information. I thought you might have to no to find the vacuum gauge. Thanks again.

 

what is a VRV????

 

It's a Vacuum Regulating Valve and it was used to control the vacuum to the modulator on the older transmissions. Since these diesels have a constant vacuum, it is needed to control shift points.

Electronically controlled transmissions don't use the vacuum.

Gary

 

That explains why I didn't know what it was!! Is the valve variable or is it either on or off.

 

It varies with the amount of throttle.. That's why it's mounted on the IP..

Gary

 

Well I adjusted the VRV from instructions I got from the diesel stop. I was alittle worried when I very first put the gauge on it was like 6 and 4. The instructions called for 13 and 7. I adjusted it and it went to 10 and 4 getting better. So then I just pushed it as far towards the cab as possible. And drum roll 13 and 7. The morales of the story the sun does shine on a dogs a$$ every once in a while