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I searched the archive for "servicing deuce injectors," but found no thread on the subject. Since I am in the middle of servicing my deuce injectors, and I have a few questions, then I thought I would start a thread on the subject, and hopefully someone will answer my questions, and/or I will contribute what I am doing so far. I will have to add photos later.
I have the TM that covers full service of my deuce, including servicing deuce injectors, but I will have to post the TM #, when I am back at my M756a2.
I removed the return lines, and loosened and disconnected the injector hard pipes from the injectors, while leaving them attached to the IP. I also removed the injector hard pipe clamps. I then removed the injectors, and found that at least 2 of them were not even bolted in with any torque value at all on them. Consequently I noticed that the copper compression washers had been burned slightly, and the silicone seals on those injectors had also been burned slightly; however, I also found all of the injector silicone seals were serviceable.
I have a 1983 Chevy van with a factory installed 6.2L diesel engine in it. I have been running alternative diesel fuels on it for 10 years. The injectors on that engine used to coke up annually from running a fuel blend that was 80% WVO plus 20% gasoline. So, I learned how to service those injectors, which included purchasing 2 ultra-sonic cleaners. If you are going to service your own injectors for a deuce, then you are going to want to purchase an ultra-sonic cleaner that has a 2L (2qt) capacity.
Before putting my injectors in the ultra-sonic cleaner, I installed 1/8 NPT plugs into the inlet of each injector, to keep dirt out of the inside of the injectors. I used stale gasoline as my cleaning solvent in my 2L (2qt) capacity ultra-sonic cleaner. It worked just fine. In between each half-hour cleaning cycle I ran a brass wire brush over the entire outside of the injectors, including the injector tips. My injectors were 1-hole type. Note: one has to be careful not to be too aggressive on cleaning the tips.
My present problem is locating a source for the crush washers to seal the injectors on installation. I foolishly figured that I could just purchase the crush washers from any local auto parts store. I was wrong. Not even the local Fleet Auto Parts store, which is generally good for big diesel engine parts, had them. So, does anyone have an idea where to get them? I am guessing it is going to be an AMBEC part. And, I guess it is going to be the same for the silicone seals, if they are going to be needed.
You are going to want to pick up a pop pressure tester. I bought one years ago from Ebay for testing the injectors on my 6.2L.
A source for the shims, for adjusting the pop pressure, would be useful as well. It is probably another AMBEC part.
While cleaning the injectors I found a very small amount of coke on the injector tips. The explanation for why I found so little coke on the deuce injectors is probably due to a number of factors: I only have a couple of thousand miles on alternative diesel fuels on my deuce; and I have been running 60% WVO blends since I bought the deuce; and an N/A deuce may be more efficient at burning alternative diesel fuels than an N/A 6.2L, due to its various design features that allow it to burn a wider range of fuels, which is why I bought the deuce. A turbo would improve this further, so I plan to add one as soon as I can afford it.
I have the TM that covers full service of my deuce, including servicing deuce injectors, but I will have to post the TM #, when I am back at my M756a2.
I removed the return lines, and loosened and disconnected the injector hard pipes from the injectors, while leaving them attached to the IP. I also removed the injector hard pipe clamps. I then removed the injectors, and found that at least 2 of them were not even bolted in with any torque value at all on them. Consequently I noticed that the copper compression washers had been burned slightly, and the silicone seals on those injectors had also been burned slightly; however, I also found all of the injector silicone seals were serviceable.
I have a 1983 Chevy van with a factory installed 6.2L diesel engine in it. I have been running alternative diesel fuels on it for 10 years. The injectors on that engine used to coke up annually from running a fuel blend that was 80% WVO plus 20% gasoline. So, I learned how to service those injectors, which included purchasing 2 ultra-sonic cleaners. If you are going to service your own injectors for a deuce, then you are going to want to purchase an ultra-sonic cleaner that has a 2L (2qt) capacity.
Before putting my injectors in the ultra-sonic cleaner, I installed 1/8 NPT plugs into the inlet of each injector, to keep dirt out of the inside of the injectors. I used stale gasoline as my cleaning solvent in my 2L (2qt) capacity ultra-sonic cleaner. It worked just fine. In between each half-hour cleaning cycle I ran a brass wire brush over the entire outside of the injectors, including the injector tips. My injectors were 1-hole type. Note: one has to be careful not to be too aggressive on cleaning the tips.
My present problem is locating a source for the crush washers to seal the injectors on installation. I foolishly figured that I could just purchase the crush washers from any local auto parts store. I was wrong. Not even the local Fleet Auto Parts store, which is generally good for big diesel engine parts, had them. So, does anyone have an idea where to get them? I am guessing it is going to be an AMBEC part. And, I guess it is going to be the same for the silicone seals, if they are going to be needed.
You are going to want to pick up a pop pressure tester. I bought one years ago from Ebay for testing the injectors on my 6.2L.
A source for the shims, for adjusting the pop pressure, would be useful as well. It is probably another AMBEC part.
While cleaning the injectors I found a very small amount of coke on the injector tips. The explanation for why I found so little coke on the deuce injectors is probably due to a number of factors: I only have a couple of thousand miles on alternative diesel fuels on my deuce; and I have been running 60% WVO blends since I bought the deuce; and an N/A deuce may be more efficient at burning alternative diesel fuels than an N/A 6.2L, due to its various design features that allow it to burn a wider range of fuels, which is why I bought the deuce. A turbo would improve this further, so I plan to add one as soon as I can afford it.
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