Starting D7 Cat

This is a description and demonstration on starting an old D7 3T cat

[@patrickgreen722]

im 15 and this is pretty cool, i have an ol 84 john deere 500c backhoe and thing is built like a tank and seeing old dozers like this is badass

[@user-nj1qo7cg8k]

Love the old iron!! Was built very heavy duty, a very stought machine!@

[@RomeKG471]

Throttle should be in the off or closed position when starting! No fuel should be going into the cylinders while cranking UNTIL ready to start the diesel! NO need for either!!!!!!!!!!!!!! The engine must be turned over on compression to build up heat in the cylinders for it to fire up!

[@hanks3597]

My procedure has worked well for 35 years,,, think I will stick with it

[@cosmokramer9993]

@@hanks3597 Sorry Hank, Rome K/G is right. Adding fuel before the engine is warmed up only serves to wash down the cylinders . If you had been doing it correctly for the past 35 years, you probably wouldn't need ether. I don't recall ever having to use ether to start one of these engines. The pony engine is there to warm up the diesel engine, that's why they share the same coolant. Not hard on it at all to crank the diesel engine until it is ready to fire. The compression release is only used if the pony engine can't turn the big engine over easily, as in very cold weather. Enjoyed seeing (and hearing) one of these old girls running!

[@BritishEngineer]

@@hanks3597 I quite agree with K/G and Kramer, those are the ways to do.

[@Agnemons]

@@hanks3597Doing it wrong for 35 years doesn't make it the right way to do it.

[@redwolf230]

@@Agnemons and im guessing you know it all dont ya keyboard cowboy. People like you and the others need to keep your traps shut. Noone cares what you all have to say.

[@thecollectoronthecorner7061]

Just Subscribed. Back in the early 70's I operated a 3TD7 with a cable unit and a rake blade. Stacking and burning timber behind a D7E with a Cutter Blade. We have dozer video on our channel.

[@wilmamcdermott3065]

That motor sounds really good

[@VideoBulldozer]

Very much

[@lorenblanchard4348]

I own and run one just like her. Great machine. Thanks for the video. I’d like to know where I can get a starter for my pony. Mine is hand crank

[@charlesfoster141]

Nice video. You explain things very well. I like this pony motor set up better than others I have seen. I think I could run and operate this dozer now but I would ad OROPS first and a good seat belt!

[@cosmokramer9993]

I see you still haven't learned the correct starting procedure for the diesel engine. Old dogs and new tricks, I guess.

[@wilmamcdermott3065]

Mine is first year of 17A C sieries

[@arnenelson4495]

How about starting with the hand crank?

[@D7Peter]

Wrong wrong wrong

[@tombowman2154]

As warm as it is, why do you need ether?

[@hanks3597]

It's an old engine..Will start without ether but this way is much less stressful on all parts especially the Pony

[@rossgray3070]

@@hanks3597 Using either would be more stressful on the main engine because of pre ignitionThe whole idea of the pony motor was to do away with the need of starting aids in cold weather. I agree with Kramer and the others as to the correct starting procedure. I learnt to operate dozers 54 yrs ago on a D8 8R which had the same starting procedure, am still operating dozers full-time 54 yrs later.

[@MrKyleschmidt752]

​@@hanks3597 Let the pony turn with compression on. Then deliver fuel, no ether needed. Being old is irrelevant.

[@tonyodempsey6755]

Ensure gears are in neutral

[@donstewart2059]

D7 were used in ww2 they had a turbo

[@wilmamcdermott3065]

No turbo untill 1959 some were installed on early 17Ad7 but none on 3T model

[@wilmamcdermott3065]

3T must be50 to 55