IH 715 Combine engine question

tobaccoman · Apr 23, 2011

From the info on this forum, I learned that both D-301 and D-310 diesel engines were used in the 715. How do you tell which engine a particular combine has?

hardscrabble · Apr 23, 2011

Check the fuel systems. The 310 was a German diesel.

tobaccoman · Apr 23, 2011

I don't understand what you mean about checking the fuel system. Pleae explain some more. Thanks.

Harold H · Apr 23, 2011

Tobaccoman,

Look at the engine and if it has spark plugs and a carburator it is gas, and if it has injectors with steel lines from the injection pump to the injectors, rather than spark plug wires, it is a gas.

Harold H

tobaccoman · Apr 23, 2011

It does have a diesel engine; I just want to know how to tell if the engine is a D-301 or a D-310.
Also, if you re-read your post, I think you meant the last word to be "diesel".

JimB2 · Apr 23, 2011

Hi, D-310 Engine will have a Bosch injection pump.
The injection pump will be on front left of engine.
Each injector will have a fuel return line on top.
JimB

Anonymous-0 · Apr 23, 2011

If it has glow plugs it is a d-301.The injector are held in by two bolts also.

DeltaRed · Apr 23, 2011

You mean C301?(gas)

Brownie 450 · Apr 24, 2011

Engine # should be on a flat at the top of the block--right side--- front. I could be wrong, though.

Baelee05 · Apr 24, 2011

I think the man understands the difference between a gas and a diesel engine. He is merely asking which diesel engine it has. The early 715s had the D301 diesel and the real late ones had the D310 diesel.

Red Roundhead · Apr 24, 2011

Look @ injection pump. The 301 will have either a Stanadyne or a Roosa Master pump. The 310 will have a Bosch unit, I believe. The 310 is german, made at IH"s german engine plant. The 301 is a non-sleeved american engine. same block as the c-263, c-291, d-282. The c-301 gas is unsleeved as well, i believe.

Anonymous-0 · Apr 25, 2011

Easiest is it a glow plug start, D301 IH made in USA, direct start with ether aid is IH D310 made in Germany.

Owen Aaland · Apr 25, 2011

(quoted from post at 21:20:27 04/24/11) Look @ injection pump. The 301 will have either a Stanadyne or a Roosa Master pump. The 310 will have a Bosch unit, I believe. The 310 is german, made at IH"s german engine plant. The 301 is a non-sleeved american engine. same block as the c-263, c-291, d-282. The c-301 gas is unsleeved as well, i believe.

The gasoline and diesel engine blocks may look the same but they are not interchangeable. The biggest difference being the amount of head bolts. The gas engines uses one more bolt than the diesel.

RedRoundhead · May 27, 2011

No kidding? I did not know that. Odd the gasser would have more bolts, eh?

IH 715 Combine engine question

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