Removing, rebuilding, reinstalling Hydraulic Head

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FloridaAKM

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I bleed the fuel filters after changing them, but nothing else needs it. That said, I came home to a pair of fully charged batteries & turned the power on the Deuce. Fuel is flowing back into the tank, so that pump is working fine as I thought. 10 minutes of the pump running & I decided to spin her up & see if she would fire off. Three 20 second tries & no start or even popping going on. This makes me wonder what is up with this engine.
 

NY Tom

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Have you had any luck with this?

I got mine running - lift pump plug must have gotten oxidized or loose being knocked with the battery charger. Poor troubleshooting on my end.
 

FloridaAKM

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No, I pulled a muscle or something in my back & it was too painful to even move for a while, so no working on the truck last weekend. This weekend is Gator Nationals Weekend, so to miss all the crowds, I will be slumped over the fender again taking out the hydraulic head & lines. Listening to the drag racers do their runs all weekend while working on the Deuce should be relaxing.
 

texas30cal

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Strange that it won’t even fire with ether, regardless of HH it should fire. Make sure intake is not plugged, since it didn’t run when you got it private Pyle is suspect. Maybe rags in intake/turbo? Also verify that valves are moving.
 

FloridaAKM

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Intake is not plugged, tried to remove the check valve coming out of the HH & going back to the tank as return. Spring is not broken, but check valve will not come out with a strong magnet that fits inside where spring rides. Cylinder valves are moving, but I might need to remove the covers to watch them all & check the lash. Injectors are next this weekend if Floridianson has some free time to look @ this beast.:-?
 
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FloridaAKM

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Last week Floridianson came by & we hooked a known good injector to the #3 injector line. Spinning the engine produced no results with the new attached injector, removing the injector allowed fuel to pulse out, but with no pressure. Time for a rebuild on the injector pump? This past week we surmised that the check valve under the 12 point bolt was not doing its job, but I have always been told not to remove the plug. So, I removed the plug & the spring & sprayed carb cleaner into the bore & swabbed it out again.
Using a cheap pair of HF needle nose pliers, the check valve could be grabbed inside the bore & pulled out with a sucking sound of diesel in a tight tolerence bore. It was quite stuck, but the carb cleaner freed it. There was no real gunk on the check valve or the bore, just that reddish brown thin coating that biodiesel leaves on the fuel system. Cleaned it all up & reassembled the parts, checked the engine for FOD, put the steel plate next the intake in case of a runaway if it started & jumped in the drivers seat to spin over the engine. The first spin over was like all others with no results after the starter dropped out. The second time the engine started popping & blowing smoke out the exhaust & continued to run raggedly. I let it idle @ 1000 rpm on the throttle control for about 10 minutes & the engine smoked thru the blowby road tube a lot, but it runs now. Changed the oil & filters, but still need to go thru the brakes before a road trip to shake her down. Thanks for all the comments & help guys. Thanks to Gimpy for the spare spring & button for the hydraulic head.
 

MMarks

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Need a little help please.? The M35A2 ran rough and sluggish before. Idle was around 850. Then one day it wouldn’t start. I reviewed the thread and videos. The short of my long story.. Lined up marks before removing original HH . Replaced HH with new from CC . All back together and runs but RPM is high. 1000. Thoughts please? Possibly a tooth off?
 

Another Ahab

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I found my leak. This makes it easy peasey. It took me about two hours with 30 min for a lunch break. These O rings were flat and brittle. The main leak was the small one on mine. Labeled the lines with painters tape.
Nice work, Slate!

You must have been pretty confident (or maybe I'm just LACKING confidence sometimes):

- I hate stopping in the middle of a project for fear of forgetting my focus and losing the momentum

Was that lunch break because you felt "over the hump" already?!
 

Slate

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Ozona Texas
Nice work, Slate!

You must have been pretty confident (or maybe I'm just LACKING confidence sometimes):

- I hate stopping in the middle of a project for fear of forgetting my focus and losing the momentum

Was that lunch break because you felt "over the hump" already?!
The wife said come eat now and I jumped. She's a good cook and I would hate to miss out. Now I have an M54A2 I'm going to do this on next. I'm guessing it Should be the same.

Sent from my moto z3 using Tapatalk
 

Another Ahab

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The wife said come eat now and I jumped. She's a good cook and I would hate to miss out. Now I have an M54A2 I'm going to do this on next. I'm guessing it Should be the same.

Sent from my moto z3 using Tapatalk
So, for that M54A2 project, you're saying that lunch will be left-overs?

:mrgreen:
 

frank8003

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So...

Say How does one shut down a muti-fuel engine, ... yank the handle out or pull slow until she dies.
What is all the mecahnical and hydraulic things that happen when one pulls the shutoff handle, what happens inside all of that? There is lots going on in there.

Does One dump diesel crankcase drain oil into the fuel tank?
What RMS is the rotating plunger to the sleve within the HH? and how does one protect that?

Did One ever hand lap something that rotates and rides up and down?
What lapping compound was originally used. The test bench built to qualify injection pumps was very interesting. What would fail the testing. What would pass. Did One understand that procedure/TM?


This is questions, and just a few. .............
 
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