Attention: TDR Forum Junkies I'm wondering if anyone else has had this problem? I have approximately 48,000 miles on the truck and use the brake religiously for slowing down and when towing, as well as warming up during cold mornings here in Denver so, I really want to get it working again.
The reed valve in the back of the diaphram body has failed. The retaining nipple ripped off. I will attach some pictures at the bottom of this to show where it came from and what it looks like. The valve looks like the valve that would be in a self draining snorkle. My pictures cut a little bit of the valve off in the hand but, I never said I was a professional photographer.
The problem I really have with this failure is that I can't seem to get any support from Cummins on this. I have called all over the place trying to get this valve but, Cummins has told me to talk to Jake. Jake has told me they supply the brake but, Cummins supplies the pump. Called Cummins again and they gave me the number to their pump supplier because they only have the pump as a complete unit, no rebuild kit or parts. I called their supplier and they informed me that they are going to do some research to see what they can do for me but, Cummins is who should be helping me out because they own the tooling that makes the parts and contracts dictate that the supplier doesn't sell to the consumer. To buy a whole new pump will cost me $500
and I'm not real interested in spending that over this valve that is the size of a nickel. The fact that I bought this truck and brake at the same time and plan on them lasting for 300,000 miles doesn't set well with me that I can expect to buy $500 worth of vacuum pump every 50,000 miles to keep the brake working.
Anyone else experienced a failure of this pump or have an idea of where I might get a valve that will work in place of this?
The reed valve in the back of the diaphram body has failed. The retaining nipple ripped off. I will attach some pictures at the bottom of this to show where it came from and what it looks like. The valve looks like the valve that would be in a self draining snorkle. My pictures cut a little bit of the valve off in the hand but, I never said I was a professional photographer.
The problem I really have with this failure is that I can't seem to get any support from Cummins on this. I have called all over the place trying to get this valve but, Cummins has told me to talk to Jake. Jake has told me they supply the brake but, Cummins supplies the pump. Called Cummins again and they gave me the number to their pump supplier because they only have the pump as a complete unit, no rebuild kit or parts. I called their supplier and they informed me that they are going to do some research to see what they can do for me but, Cummins is who should be helping me out because they own the tooling that makes the parts and contracts dictate that the supplier doesn't sell to the consumer. To buy a whole new pump will cost me $500
and I'm not real interested in spending that over this valve that is the size of a nickel. The fact that I bought this truck and brake at the same time and plan on them lasting for 300,000 miles doesn't set well with me that I can expect to buy $500 worth of vacuum pump every 50,000 miles to keep the brake working. Anyone else experienced a failure of this pump or have an idea of where I might get a valve that will work in place of this?
). 
When this problem first started occuring to me, I called everywhere to get actual repair parts for the pump, including the factory in Canada. The factory was about the 4th place I talked to trying to get them and I felt like I was getting the run around because even though I was told they made it, they told me the pumps were made somewhere in Malaysia or something like that. I got bored with dealing with them and ran out of time as I had to pull my race trailer to an event so I bought another pump. This time I had time to diddle with it and found the fix, at least for me. 
