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The flywheel is held to the crankshaft with a taper fit and a key. It's possible the key sheared off and the flywheel has spun, but that is fairly unlikely. Also, if that had happened, you would not be able to get the drill bit to align with the IP slot while the pointer is at PC. The IP would...

Threw the pump back together and replaced the delivery valve spacer and pump seals, installed pump ( without moving engine ) and its running good now. The pump timing is about 2 notches advanced but its running pretty good now. I didn't find anything wrong other than little pieces of delivery...

Your thinking is correct, PC should come up almost 1/4 rotation after the #1 intake valve closes and the compression stroke begins. The A and B marks I believe are references for valve lash adjustment. It's mentioned somewhere in the TM. Can you give us the history on this machine? Is it new to...

Are you having any cooling problem other than the temp gage not working? It sounds like your gage just broke, from your description you don't indicate any other overheating problem. Rad. is full, just fill the bottle to the mark and keep an eye on it. It's intended to go up and down a little as...

After sending the dimensions the other day I decided I might as well make up a couple more adapters and I noticed a mistake on the dimensions as well as an area for improvement. The remaining wall that seals the adapter to the block should be .080" wide, not .100" , this in turn increases the ID...

I got them from www.DiscountHydraulichose.com PN 6400-12-12 They call it a 3/4 JIC x #12 SAE/ORB. Should be about $2.50 ea. so might as well buy a few... Sorry about the upside down pictures, not sure what wrong there....

Here you go, sorry about the hand written chicken scratch drawing, but you should be able to get the idea. One of these days I'll learn Solid Works so I can model things more professionally looking! So the .100" wide lip is what fits into the recess where the Square ring gasket normally seals...

Ah, darn, I forgot. I'll grab one and make you a sketch with the dims. that I used. I'll send something later today, gotta run home at lunch time and get one, I didn't make myself a drawing when I machined them.

I just printed out the Ambac service guide and the pictures are identical to the TM, so I'm suspecting the plunger in mine is 180 out from it's correct alignment. I'll verify it tonight and assemble according to the diagrams, although I'd still swear the writing on the plunger guide seemed...

LITD, I have been thinking about this for a couple days because I could swear the 802 and 803 were different as well. I looked at 2 of my machines last night and they are in fact different. The 803's I have are taller and have cut outs for the radiator cap and fuel pump, like Zed254's picture...

Well, last night I pulled it apart and found nothing obviously wrong yet. Plunger guide was in place and not damaged ( I think ) and plunger is in the guide oriented the way you would expect, with the round side aligned with the round side of the guide. However, do you guys know if the TM has an...

FYI, on an 802/803 you need 1/2" NPT. On the 002 and 003 you need 3/4" npt to screw into the machine.

Yes, I just ordered some parts from Ambac, so I will have some stuff on hand. I'll pull the pump out and see what happened internally. Should be fairly obvious once I get it apart. I've done a few of these pumps before, so it will be interesting to see what went wrong on this one. I'll post...

Hello Cord, I have 831A that was once doing similar things. It would randomly shut off after a minute or 2 and I would get over voltage and obviously low oil faults when it died. I also installed one of Kurt's controllers and it has been good ever since. A word of advise, when you install the...

Gunny, Guy is right, I'd get your batteries charged up and test your alternator. If you aren't getting close to 28V out of it, it is bad. You can get a replacement for $180 but you also might only need a new regulator. I've occasionally seen them for $40, but few and far between. The TM tells...

This morning I took a few minutes to check the static timing and something is definitely wrong. With the #1 cyl. valves closed and the engine set with the pointer at PC and verified a 1/8" drill fits into the notch under the small screw, I removed the spring from the delivery valve and removed...

Hello guys, I have a question regarding an MEP-003A that I'm working on. It is a machine with 6 original hours on it, has been sitting a very long time. I purchased 2 of them on a M1061 trailer from a nearby municipality. I went through the machine doing all the regular pre-start stuff, flush...

I use Wix 51515 or NAPA 1515. I don't have any pics with me now, but I made 4 or 5 spin-on adapters out of 1" aluminum. Maybe took an hr. ea. on the lathe. Then used a 3/4"-16 straight thread X -12AN flare adapter to attach the adapter to the block ( 3/4" straight thread end ) and serve as the...

Thanks as always Guyfang! I will consult the manual as well....

You will definitely need to change out all your rubber fuel lines at a minimum. Most likely the well nut will also need attention. Also, keep in mind that biodiesel will cloud at temps as high as like 36F. So in cold climates running straight Biodiesel has other issues besides eating rubber and...