New engine for the family truckster!

[RPOLS3]

Impressive - nice write up as usual.

[daverd]

Did you move the injector power control unit form indeed the intake manifold?
With a new cool plate?

[njsteve]

The PMD (Pump Mounted Driver) is the little computer box that was originally mounted to the side of the injection pump under the intake. The designers thought it would be a great idea to have the super-hot running circuitry inside it get cooled by the diesel fuel running through the pump when the engine was running...only they didn't think about what happens when you shut the engine off and the heatsink effect fries the PMD.

I relocated it to behind the front bumper about ten years ago and never had a problem since. The truck went through three injection pumps when new. I bought it new in Florida and the first PMD fried five miles from the dealership the day I bought the truck! Back then GM refused to acknowledge the design defect and would replace the entire thousand dollar injection pump (with PMD attached) instead of just swapping out the PMD. GM eventually admitted the problem and extended the warranty on the pumps to 10 years or 100,000 miles. But they still would replace the entire pump instead of the PMD.

Here's a photo of the original PMD still on my injection pump. I bypassed it with an aftermarket four-foot long harness extension that reaches to the back of the front bumper behind the license plate brackets. It is mounted on a large heat sink in the protected airflow of the oil cooler duct holes in the bumper. I finally removed this old PMD from the pump last week and am keeping it as a spare - you always carry a couple spares in the tool box when you have a 6.5 diesel.

Kind of like the Mopar guys always carry a couple extra ballast resistors in the glove box for the old Mopar ignition systems.

[Xplantdad]

Steve, One of my jobs while working at Hardin Olds/Honda/DeLorean was to drive the numerous diesel injection pumps to the rebuilder on a daily basis from Anaheim to Ports of Call, Long Beach area...I put over 100,000 miles on a new Delta 88 in one year...taking them back and forth. I think this was 1979, maybe 1980.


That's what they get for converting a gas 350 to diesel...and not putting a water separator under the hood


Great job!

[njsteve]

Here are the necropsy photos. We'll start with the rod bearings. Looks like the oil analysis was spot on based on the flaking of the outer bearing material and the wear in the second layer.

[njsteve]

and next, the mains:

[COPO]

Great thread. Well done.

[njsteve]

BTW, let this be a lesson to not leave your tools out when you're done with a job...

...The wife saw the cherry picker in the driveway and got an idea to use it to pull out some tree stumps. It actually worked pretty darn quick. Kind of like pulling a tooth. Took maybe 10 minutes once it was set up, instead of 4 hours the last time she made me chop one out of the ground with a pick axe.

[Tommy]

resourceful !


Tommy

[PxTx]

I remember doing that at my 1st home. My neighbors were watching and my wife and I got a round of applause when the stump was freed!

Option B, may have been to tie the Suburban to it and pull it out in low gear. Option A seems much safer!