Some of my regular work. This 60 received new pistons, liners, connecting rods, bearings, cylinder head oil cooler, injector harness and air compressor. Front and rear structures resealed and new crank seals plus checked the bull gear and gear train. Rebuilt the jakes and installed new exhaust manifold. Just regular work. Truck Shop
The rest of the pics Truck Shop
Pretty good progress since Sunday.
Monday was hectic so I never got the pistons loaded in the liners till Tuesday morning, finished today at 1:00. Truck Shop
Damn you do purty work!!
I remember the bull gear in DDEC III & IV had a tendency to come loose. Has there ever been a real solution suggested for that problem? BTW happy thanksgiving.
This one is a 14L 550 hp DDEC IV. The bull gear bearing can go out and the gear also can fail but usually it's with high mileage engines. Rule of thumb is check them at 750,000 miles. But this is another area where extended oil changes can play hell with the internals. Most 60's don't have an issue when the oil is changed regularly. We change ours on Series 60's at 15,000 mile intervals. But I have seen Cats including two B models that the bull gear bushing went out. One of those engines the gear sawed it's way through the front cover- the driver probably heard the noise and just turned the music up. Truck Shop
Thats what i was referring to. A couple 12.7L engines. They were for the same customer. Early 2000's one was a freight shaker and the other was an older navistar. 10,000 mile oil change. Customer was crazy about maintenance. Both of them were less than 500k if i remember correctly. The bearing support had loosened up a touch in each. Both had destroyed the inner covers. I couldn't tell which occurred first , the loosening or the bearing failure. Just something i remember and when you mentioned it, it brought back memories of the carnage inside.
It was at this time that Bubba realized, he was gonna need an amp and subs if he was gonna climb that hill with the ether start button
BANG!!! OUCH!
Detroit did revise the front bearing on the later DDEC IV and V for the bull gear. I don't know of much that hasn't been revised in one way or another. Some of the torque spec's have changed three times. Plus things like the added o-ring that set's just above the injector copper to stop coppers from leaking. But Cat had revised and up-dated so many times since the first E model to the last C-15. All things that come about after initial design. Truck Shop
That pic reminds me of a 1693 that sawed it's self in two. The head was holding the block together and you could see the steer tire on the right side . Truck Shop
That 60 I changed out last month came from an outfit like Swift or another that ran extended oil changes and let me tell you that was one dirty engine. One minute of cranking to prime fuel turned the oil black. Bullgear was fine, but I did an overhead set while it was on the floor and it was sticky black stuff every where. We just did the first 5K oil change and hopefully things will clean up after a few more.
Swift was running 40,000 miles between oil changes before synthetics came along. We are running 30,000 miles between oil changes with 10X30 synthetic on our DD15's. We took oil samples and found that is about all you can go safely. I talked to the oil testing lab at Cat in Meridian Id and was told {Quote-No matter what brand of oil it is 30,000 miles is the max on any brand and they have tested everything] he told me that was off the record also. And when the mileage reaches 325,000 on our DD15's we will drop the interval to 25,000 miles then 20,000 after 500,000. On the 60 Series pre-emission engines we stay with 15,000 intervals . One outfit in Yakima lost three engines trying to run 50,000 miles between changes, they cut back to 30,000 intervals. I would rather we change at 20,000 max but I'm not the owner-OIL is cheap! Truck Shop
The pic of that engine above looks like someone through a brick on the go fast pedal and walked away. Truck Shop
brings to mind the old Pennzoil advertisements, pay a little now or a lot later
Some engines just weren't meant to have a long life either. A repair and towing shop I worked at years ago would end up with scads of abandoned cars that no one would buy. So every once in awhile we would have a brick party. I would wire a tach to them to see what those engines would turn before death struck. The longest running 4 cyl- Toyota, 6 cyl-Dodge, V-8-Ford 351 Cleveland 2V. The mechanics from other shops would show up after work on brick days to bet on them-the Cornwell tool salesman would notify the shops on his rounds. Truck Shop
Best screamer we had was a Mazda Rotary, could literally pull up to a stop light lay your foot on the floor and await the light to change, would come off the line like a funny car!! Could not blow the POS up to save anyone's butt. HS Buddy had a '47 Plymouth with a knock so we pulled the pan, bad rod bearing, gone. So we left the pan off and went for a ride, two hours later drove back home screeching and smoking but did not lock until we left it sit overnight. Tighter than Dick's hatband next day!! Had to go get one of our dollar down trucks when at the truck line in '76. Driver was in hospital with head cut open, was trying to get someone to go to the truck really bad per his BIL, needed something off it but he couldn't understand. Got the wreck back to the shop, had a rod thru the cam side of a Cummins, also had run off road when the engine failed and rolled all scrap with less than 40,000 miles. We got to looking as to engine warranty but the 'Stinger' sticking out of the governor cover shot that to hell.
And this is where that Series 60 ended up. This is the last glider the company will buy, we bought a total of 29 gliders the rest are DD15 and 16 powered. She has 40 miles total on it from test drive. Truck Shop
Heh. I looked at a little 4 cylinder Perkins once that threw a rod. I told the customer we could fix it. All he needed was a block, a crank, a cam, a pan, a rod, a piston, an oil pump pickup tube, and a few bearings. Nothing to it. That said, I've fixed several engines with thrown rods. If the hole is just though the side of the block and not the flange, it's not a big deal. Braze in a patch and rebuild as usual. Nice work on the Detroit. I think the days of gliders are coming to an end. Another EPA crackdown.
Good looking truck. Should be in a museum as the last of the "no emissions" good ones.
Sweet ride.
That's a sharp looking install. Nice n clean
Thanks fellers, Tate Transportation try's to operate decent equipment-safety is one of their main elements. Truck Shop
I see a couple Tate trucks everyday on I-90, Very clean and shiny. I have no doubt everything underneath is in the best condition. Big thumbs up to you guys for running quality stuff.
Very nice work TS!