JD 6330 heater core engine tie in location

610Garage · Jul 9, 2020

I was wondering if anybody knew where the heater core for cab heating tied into the engine of a John Deere 6330.

I am in the process of adding A/C and heat to my 6330. As you might have guessed, it is the basic model and didn't come with it from the factory. Or a cab for that matter... but I digress.

Looking at JD's part diagrams, I know it's from this side (see pic) of the engine. Unfortunately, that Is all I can discern from the scribbling they call a parts diagram. If I were a betting man, and I may have to be

, I would say the water comes out of the capped off port on the engine's coolant pump. It then returns into another blocked off port at the bottom side of the oil cooler. But I would love someone to confirm, deny, or just show a pic of this.

Thanks in advance for any help.

radios1 · Jul 9, 2020

maybe go to your local dealer, and take pictures of one with the A/C and heat so you know where the lines go??.. maybe this will help.. https://curtisindustries.net/wp-con...00-and-4000-Series-Heater-9PH20S26-Rev.-Q.pdf

Zebrafive · Jul 10, 2020

Here's what I found on JD parts.

Looks like one line connects to the water pump at about 3 o'clock (sitting on the tractor)

The other connects to the back of the oil cooler (pointing towards rear of tractor)

610Garage · Jul 11, 2020

radios1 said:
maybe go to your local dealer, and take pictures of one with the A/C and heat so you know where the lines go??.. maybe this will help.. https://curtisindustries.net/wp-con...00-and-4000-Series-Heater-9PH20S26-Rev.-Q.pdf

I might try that. I just hate bothering somone I don't do business with for such a thing. I mean, I guess I could buy some oil.....

610Garage · Jul 11, 2020

Zebrafive said:
Here's what I found on JD parts.

Looks like one line connects to the water pump at about 3 o'clock (sitting on the tractor)

The other connects to the back of the oil cooler (pointing towards rear of tractor)

That's pretty much what I was thinking. But I only found the last diagram. I didn't think to look for a diagram of the pump and oil cooler. That does help. Thanks.