TRYING TO UNSTUCK CAT D7 ENGINE!!! 

A buddy and I used to fool around with these old Cats. When we found one stuck, we'd always remove the injector nozzles, pour diesel or Marvel into each cylinder, and let them soak for a day or two. Worked really well.

Man that turbo on the D7 is just music to my ears. I hope y'all get the other D7 unstuck!!!!

Love to see them ole girls still at it!! 👍hope she runs like a top for ya boys!!👍

It is your dozer, your video, your time and you share it .... but I am going to sit here in the A/C and tell you how to do it. .... with a keyboard.... I love RU-vid.... live life man, enjoy this everyday you can!

It's never easy tow starting an engine . Ive been dragging around my chainsaw all morning and it still won't run

Ah yes, the sound of a 17A's turbo. Listened to that for years, years ago. Sweet machine with excellent power to weight ratio for it's time. Better than the D7E that were produced concurrently with the later model D7-17As. I agree though, some lube first would be a good idea. You probably did that though. Wonder if a high gear on the 7 would have been better than a low gear...just thinkin. Yes even reverse has multi speeds.

I learn so much from the comment section ! The experience and knowledge from the hard working people out there is priceless ! Thank you all !

My Grandad used to pull start his D6 a few times with an IH 806. Looked funny but worked like a charm.

My son and I freed up a 46a d8 ,,, pulled the injectors and put atf and acetone in each of the cylinders,,,, left it for about 2 weeks and used a long bar on the ring ger\ar to start rocking it,, It broke free after about 3 seperate attempts,,,, now to fire the beasty back up

This guy helping this equipment out he stuck try again always have back up plan awesome video keep up the good job men bless you happy holidays Thanksgiving

I bought a cat d6 9u with a stuck engine and tryed to free it up like this ended up rebuilding the engine then i found out y it had been sitting all those years. The hub that the sproket presses on to was broke ..... I got a good used one and im in the process of putting it back together

Love that turbo whine.

Love the sound of turbo 17A's.

Get a 5 gal can of wd-40 and dump it down the stack till it's full, leave sit for a week and get on the flywheel with a nice long bar. If it doesn't move let it sit a little longer and try again. If it moves give it another day and bar it over. I did this on a d82u that had been "rain poisoned", took me about 3 weeks but I got her loose! Good luck and I hope you get it loose.

Wow you guys are so lucky!

Question: was the stuck cylinder machine put in a higher gear to push from or a lower gear and thus too much torque required. Twas pushing a dual wheel truck one time (6 of us pushing forward) and the driver had the trans in low. I yelled "2nd gear" and away we went.

Fill the crankcase right up to the top with diesel fuel and let is soak a day or two, drain, refill with oil then do this. Never try to turn a seized engine dry.

U cn pull more than u can push . But u need some fueloil and dextron to soak those pistons and rings

Very nice track machines. could use some paint though

Never seen something jumped off backwards lol it worked

Should have added a little lamp oil to each cylinder and let soak for a day or two

Cool video but I feel sorry for the stuck cylinders.

That 1st puff of black smoke says it all

NOW that's a jump start.

Is this in the manual ?

I’m not going to tell u boys how to do something but instead tell u how I have gotten lots of old engines unstuck most of the time. Pull injectors out use whatever u want for liquid u want for penetrate and heat up the water in the block to 180 or 200. Then let it cool off. The liquid u put it will get sucked in to the bottom of the pistons and will let loose most of the rust. And whatever water maybe in there will get evaporated out from the heat. Just a suggestion tho.

U need Old Farm Junk 101 guy he fix it for sure

ACELERA ESSE TRATOR HOMEM

I get the feeling that an engine as seized as that will need to be torn down.

Did u ever get it loose

How do I contact you about using a portion of your video in a nonprofit video?

D4D trying to wake his bigger brother

something will give out and it's not the engine for sure hydrolock ftw

Why do you not use the throttle when the machine bogs down? Instead you back off, when you get a good push going Throttle It

I got mine loose with dextron and acetone50 50 mix

Tryed pulling it behind a newer d7 just skidded the tracks so soaked it fr three months with dextron acitone every couple weeks through injector holes

Great.Score the cylinder bores.

Well did Pops get mad and cuss at it?

Thanks

What a couple of maroons! Wish I was there to teach you two something about push starting a cat.

Needs some TLC ....

Check out the humming bird that photo bombs at 5:45 into video. We drug an old John Deere Wheatland around the yard twice before I found the decompression lever. Then I got a shower of rusty water which turned into a run away engine. I've never gotten off a tractor so fast as that time in order to shut off the fuel valve.

I've never seen any body push start a dozer! did it with my VW rabbit may times. Always parked on a hill. But never a dozer.

Hi do u know of any one wrecking a D7 17 A

Can i ask is that small bulldozer a D4 or a D6

Soooooo cooool

Got mine free and running but i think i bent a valve. update rusted valve seat sent to rebuild shop

nice..done follow

Note had the pistons been siezed it would have never started (review the term engine siezed )

Did u ever get it loose and running

I wonder why the chap doing the pushing doesn't rev his cat's engine?

Did you at least soak the pistons in penetrant oil?

Wouldn't you just tow one from the other rather than push?

You guys are pissing in the wind!

Needs motor

Wd 40 biger cat

Turn it by hand now on fan

The conrods in the tractor being pushed will be fucked now !!

fuck thats as rough as guts!

So uh what about that D7H problem?

I'll be damn

Let it get moving before throwing the clutch in.

хм. как чтз работает

Bigger

cylinder walls fucked in 3..2..1...

Surely be better to tow than push......

You have to know what your doing to operate one of those old machines , I am sure they have done it a time or two .

That is definatley not the way to do that. Those cylinders need to be soaked.

You need to add another keyword in that list. 'Dumb' would suit......

Apparently none of them know what "throttle" is....

Mucking with old junk

Unstick not unstuck.

Killdozer

Next time buy a head gasket. Remove the head, see why it's set up!! You can do more damage by doing stupid shit like this. If rings and piston set up, pour some sneakin oil in the cylinders. Let set a couple days. Take a 5lb hammer and a block of hard wood. Now tap on the top on the pistons. It will free up, just cool your jets. Once it is free, you can check the cylinders for wear, scratches, broken rings, ect. Lazy people!!!

I can unstick that engine in two hours with a few things no need to pull it

when you have to use your smaller dozer to push start your larger dozer so it can go and try to push free the engine in your third dozer :D