Search results

I agree that all of Sewerzuk's checks apply (except those that pertain to liquid cooling systems or are MEP004-specific) but applying them would not have detected the errant nut in the gear case that caused my catastrophe. I could only have detected the nut in the gearcase if I had disassembled...

Thanks, everyone. Richard, you made some good points well worth contemplating. I've given considerable thought to what will be necessary to ensure long-term reliability. I plan to run the genset for an hour or so once a month to keep it lubricated and the batteries charged. I plan to...

Hi all, Time for a final update. Other projects have taken priority, but last weekend I removed my IP and replaced the #14 timing button with the correct one, #12. It was quite a bit of wrenching, but relatively easy, including the part I was most concerned about, actually removing and...

Joe, Thanks for your praise. Given the magnitude of my investment, failure was not an option. I appreciate your concern. I remembered from your long post the trouble you described with your IP getting hot, so it was one of the things I monitored as my unit was running after completing all...

Hi Everyone, time for an update. I sourced the two rocker arms I needed from Delk's. They were take-outs, but barely worn. Cost was $12 each. I thought this was a good deal. I installed them, re-lashed the valves, installed the rocker arm covers and lifting bracket, installed the engine to...

Hi Everyone, This is a quick update to respond to storeman, provide current status and make a request while waiting for my wood stove to warm up my workshop (the temperature is only 11 degrees here this morning). Jerry, I thought back through the sequence of events that occurred prior to...

Thanks Guys! Richard, I appreciate your detailed description on removing the timing button. I also recall reading joesco's description in his HUGE thread in which he called the little circular wire clip a "Jesus" clip. I got a chuckle out of that! I looked at Fig. 7.4 in TM-34 and...

Thanks for your excellent post, Richard. What you wrote is very clear and perfectly logical. Since I don't have Jerry's IP, I could ask him if he knows what its button number and port closing dimension were, but I agree the only way I will ever ultimately know for sure whether my IP is timed...

Thanks Richard, I was aware that it uses an Onan DJF engine before I purchased it. I was not aware Onan began producing them about 1970. I think (based on the initial dates in the TMs) the DOD started purchasing them around 1977. Unfortunately, the civilian models that wait quietly seldom...

Hi again everyone, As I noted earlier, I’ve been thinking about the issue of what must be done to retime the IP in my particular situation. I re-read the relevant section in the TM-34 several times, and also reviewed many past posts herein on IP timing. There appear to be two potential issues...

Hi Everyone, Happy New Year! Thanks for your responses and encouragement. It’s high time I updated this thread to report my progress to date. As you can well imagine, I also have a few questions. The Wednesday before New Years day, my daughter and I drove the 300+ miles down to...

Richard, Thanks for your post. I don't know where else the nut could have come from either but I'm not yet as familiar with these units as many here are. However, I'm certainly getting a crash course! I can't possibly imagine anyone purposefully and maliciously destroying such a fine...

Here is an update. I finally got the gear cover off yesterday afternoon, and I found significant mayhem inside. I will post some images when I get a chance. I still don't know the exact sequence of events that caused this catastrophe, but it involved a hardened steel 7/16" nut that somehow...

Thanks, Jerry. Sounds like the delivery valve spacer is not critical. I wonder why AMBAC designed the delivery valve this way. Maybe it's a buffer, kind of like the recoil buffer in some firearms. You have a PM regarding the short block. Stan

Thanks, Keith. I did not know all diesels are interference, but it makes sense given their high compression ratios compared to gas engines. I did know some gas engines are interference, like Subaru boxer engines. From what I can currently observe (admittedly very little) upper valve train...

Thanks, Richard. I'm going to tear it down, determine what happened and what else it may have damaged, then go from there. If the cam is broken, it must be up front near the gear since none of the valve train moves. Stan

Hi gents, Well, at this point in my examination of this no-start situation, I'm sure that I have a much bigger problem than a non-functional IP, but at least I now know why the IP is not functioning: The camshaft is not turning! I took off the front rocker arm cover in order to be able to...

Thanks, guys. I really appreciate the attention I'm getting here. If the weather cooperates (003a and its trailer set in the driveway to my workshop due to insufficient room inside), the IP is coming off today. I'll let you know what I discover once I get it apart. As Keith mentioned, I...

Thanks, Keith. From my local yellow pages, I found a place in Bangor PA not too far from me called Diesel Systems Inc. "specializing in the rebuilding of all makes of fuel injection pumps & fuel injectors". Perhaps they can get parts. Does AMBAC sell directly to the public? If Diesel...

Thanks, Keith. The mirror and flashlight idea sounds like another trick learned from experience. There is a White/Volvo repair shop near me, but I don't know whether they work on injection pumps. Perhaps they can either source any needed parts or suggest who can. I think Cummins bought...