12E With D333...Got Some Problems

[monkeyswrench]

I'm kind of new to older diesel stuff. I work on a lot of odd, orphaned stuff from time to time. This one is a customers, and here's what I "know": It was running along, though knocking a bit. Suddenly, a much louder bang, and the motor stopped. It was stuck, 24v wouldn't turn it. It was pushed aside, and let sit for a few years.

I was asked to see if I could get it freed up. Removed the starter, and used a bar to get it free. I was "backing" up the motor, not quite one rotation. Feeling slick, I put the starter in, and tried to wheel it over...it went whoomp, and stuck.
Well crap...
Off came the head, gasket was leaking anyway. Pistons, valves and such looked good. Sat the head down, and dropped the pan. The oil feed tube to the back of the block had come out of the block, and had a nick on it. Not the culprit, but something that needs fixing. The bearings, cylinders and pistons look new, so someone had her open recently, just previous to this guy getting it.

I'm thinking something has made it's way into the gear train. Something stopped her cold. Next trip out I'm going to take a bore scope and go fishing around. I don't know how much I'll be able to see, or from where. There isn't any info about gears binding, but I'm running out of causes. Any input would be greatly appreciated.

 

[Coaldust]

Timing pin stuck in the flywheel housing from the last guy that worked on it?

 

[pittsburgh cat man]

might want to check clutch and power take off

 

[monkeyswrench]

Timing pin stuck in the flywheel housing from the last guy that worked on it?

Something to look at, but it had a few hours of run time when this guy bought it. They said it had a knock to it the whole time though...so it seems a bit weird to have even run (until the final clunk)

might want to check clutch and power take off

When I had the starter out, I looked in the clutch housing. Hoping to see a weight or something thrown from the pressure plate or something. I was also looking at the ring gear teeth as I was barring the motor over.

 

[LCA078]

Any developments? Just curious more than anything...

 

[monkeyswrench]

Any developments? Just curious more than anything...

yes and no. Pulled the pto shaft from the gear box, and it spun the worm and pump easily. Be back at it Friday. Dropping the pan again, and going to pull the starter and back down the motor. Use a bore scope maybe and see if any issues in the front gear train. I haven't found any exploded views of the trans, but don't think that's the case.

Here's what it looked like a few weeks back getting the head back on it.

 

[cuttin edge]

That's a dandy service truck. Is it an old hydro or power company truck?

 

[monkeyswrench]

That's a dandy service truck. Is it an old hydro or power company truck?

Sadly it's not mine. The guy that owns the grader has this as a spare. It's a Ford crew cab that had been a railroad rig. A few months ago he had me get the PTO figured out, and put together the hoist. It looks like the previous owner had sheared the shaft. I got new bearings, races and even new cable on it. Thing's really cool.

The same guy has an IMT 2015 crane that I'm trying to work a deal for. I'm currently piecing together a 97 GMC 6500 utility truck. It's not perfect, but I'm trying to up my game. Been working on a lot of heavies and weird stuff, and it's hard to take everything. Also want to build a sleeper birth in the box. Some of the places I end up working are over 100 miles away, and after 12+ hours, sometimes I'd like to sleep a little.Here's my truck in progress, and a better view of the big Ford.

 

[monkeyswrench]

Well darn! Gear train looked perfect. There was an interesting development though. It was "stuck". Rolling the motor backwards, I'd turn the crank 90 degrees, go under and inspect. Rinse and repeat, until I came up on one rotation. I expected it to stop again...it did not So, I figured it may be an accessory, 1/2 speed issue, so I continued to keep rolling it, and inspecting the idler and cam gears. No marks at all, a little over 3 1/2 crank rotations.

I'm running out of things that may have stopped an idling motor, and did stop one cranked with a 24v starter. I didn't think about it until driving home, but maybe something lodged in the oil pump? I'd have to pull the pickup, but could look at the innards with the scope and see if it's chewed. After that many rotations, I the fuel pump pistons had all made their travel. The governor couldn't do it either...I don't think.

 

[Welder Dave]

That Ford looks in great shape. Must be near the end of the L series. Don't know how common the crew cabs were. What engine and trans. does it have?

 

[monkeyswrench]

That Ford looks in great shape. Must be near the end of the L series. Don't know how common the crew cabs were. What engine and trans. does it have?

I think it's a 94 or 95? It has a CAT 3406 I believe...only been under it to mess with the PTO. Starts right up, so no reason to tip the hood It has an LL 10spd behind it. The only crew cabs I've seen were like this one, railroad service. I don't know if they were only out west or not. Set up with 4 air ride seats. Be really slick with a jackknife couch/bed in the back.

 

[Welder Dave]

I would have guessed 94 as it looks the same as my dump truck except it appears rust free. Looks like the rear doors could be the same as the front doors. There's a very early Ford L series firetruck with an extended cab that is open on the back sitting outside the brake shop I went to to get the grader clutch fixed.

 

[monkeyswrench]

Well, some grader updates. Got the buttoned back up, and barred over easily. Forwards, backwards and multiple revolutions. Still hadn't found a smoking gun though. Owner said to throw some batteries at it, and hit the switch. So I did...

Half a rotation, stuck. Well damn. Popped the starter off to make sure it wasn't jambed up, pulled the belts off and spun the waterpump and Genny. Nope, in the motor. "Backed" down the motor after un-sticking it. Rolled it forward and backward, it was fine. Put the starter in, put my foot in the clutch, so less oil and gear resistance. Hit the switch, Bang, stuck! Tried a big bar, but I stuck it really good this time. So, pan came off...again.

As it turns out, the #5 rod was stuck. More than that, the lower cap bearing had spun under the upper.
Now, I need to figure out how I can surface that journal in the block...

 

[Coaldust]

I used a file on my leatherman tool to machine a rod journal undersized on a 3306 in D6D at the Kluwock landfill back in Nineteen and ninety five. You can do it. I believe in you.

 

[Cliffy]

My old man filed down a conrod big end once on his land rover. Was professional shooting in central NSW in the 1960’s. Spun a bearing. Could only get a standard slipper bearing. He polished crank and filed conrod down until it was close. Drove it for months after.

 

[LCA078]

Only the rod bearing spun or do you mean the main bearing? Crank journals are pretty dang hard so hopefully polishing with various grits of sandpaper will get you to what you need. May need to file the big gall-balls off but it should work. After all, it's a D333 so who knows how long before something else gives once you get the bearings sorted out...

 

[monkeyswrench]

Well, I always have my Leatherman
And yep, only number 5 rod took to rolling. The motor had been apart, and looked like someone "rebuilt" it. Hard to tell now, but I kind of wonder if that journal was a bit undersized from them filing it. The rear main looked like someone whizzy-wheeled it.
Didn't grab a pic of the others, need the owner to send me some I took with his phone.