Freightrain

Yes, full air pressure. The exhaust from the motor has a little "muffler" on it. I removed mine as that is also a restriction for air flow. It is NOT like you will ever hear the air wooshing out of it while driving a B model!!!!!

Yup, air. They can be finicky, but once you have the system good they work fine. Mine will near throw the blades off it runs so fast. The dash control will usually have a bad o-ring, which means it leaks air. Beyond that there isn't much to it. The wiper motor itself might need some cleaning and attention, along with the air lines to it. They swell up or get hard and plug up and won't pass enough air to make them move. The motor is easy to remove off the fire wall. Note which hose goes where so you can assemble it again. I pulled mine apart and cleaned the valving inside and put it back on with some new supply lines. Wow, what a difference.

I know it is a very, very tight fit back in that collar. You have to remove the brass drain valve to get it out of there. Too much paint and it won't slide through. I ran it long enough to get the temp gauge to start to rise. Being it was only mid 30's the paper I put in front of the radiator helped. I had fogged the neighbors for long enough and shut it down.

Well, radiator is hooked up so I fired it off. Still no exhaust, but that is next on the list. https://www.youtube.com/watch?v=CK_Ukv3wr88 Gotta chuckle at the black smoke. I couldn't really razz on it hard as it would blow my drier vent hose off. I know these old motors would block the sun back in the day.

I wonder if a 237 set up would bolt on. Mine was unique due to lack of cooler and turbo. Yours should be easier since it likely looks like this.

Top of the water manifold and back into the water pump. Just remove plugs and hook up hoses.

I put R model spin on my 673 na. Do you have oil Cooler? Mine doesnt. I got mine from Global truck trader on the east coast.

Ditto that. Been a really warm winter here in Ohio. I guess we might get some white stuff on Sunday as that system blows through. Doubt it sticks since the ground is so warm.

What happens when you bypass the drier? If it is getting good air to it then I would remove it and see if it works fine without it. If the drier is anything like we have on our compressor at work it has a disectant(sp) filter that could be clogged. If we run the old compressor it pumps lots of oil and it will clog the filter til hardly any air gets through the filter so I have to bypass the filter if I have to run it. The unloader valve in the compressor could be leaking back and not actually making good pressure. Or the governor is holding it open?

The ol 673 will run on the governor all day(been there for lots of years). Look on the drivers side of the transmission for a flat spot that will have the transmission code on it. Same with rearend. Won't be hard to figure out what road speed you have.

What is the difference?

I rebooted my computer and it really works well now with the new format......................................................

Which brand of pump? Typically just a small wrench will get the job done. I did mine years ago. Once fuel got to $4/gal I rolled it back down again. It is back to 8 mpg instead of 4 mpg. She did run much better, but couldn't afford to feed it.

Correct Glenn. It draws water(heat) from the water manifold, goes to heater, then returns to the water pump.

The original line came back into the casting the water pump bolts to(which is now the oil cooler-see the flat spot on top of the elbow going to cooler). I found a plug in the water pump to use.

Got pump mounted. Fan belts on. Radiator set in. Can now work on making radiator hoses.

Got mine on EBay also.

oh...no pictures. She is not photogenic and runs/hides from cameras.

Ya, your "friend with a wrecker" has a BIGGER wrecker then my friend with a wrecker LOL!!! But, it all works the same. Beats the hell out using a tree........... Yuns got a slightly larger shop to work in too.

I'm thinking Karen might find them when she gets in the bunk to sleep on the way home.........

Well I looked at my 673 pump, there is plug on the drivers side I can remove and put a nipple on for the heater hose. Looks like it will work out after all. Tragedy averted. Thanks guys. Mike, I'm thinking the Winfall Wimmin would probably get the truck nice and warm for me..........but thinking Karen might not be to keen to the idear.

Thanks Keith. I'll have to do some checking tomorrow and see where I can tie into the waterpump. I know I don't have room like that as the 673 pump is shorter and the pulley covers up most of the pump. Pretty sure mine came off the casting(where the oil cooler is at) but my 237 doesn't have a fitting there(just like yours doesn't). Where's Jim at?? Where did you tie your heater into on your 285?

The original 237 had the line coming off the bottom of the pump, going around the passenger side to the air compressor(just like the 673). That I will reuse with my 673 pump. The one heater hose came off the front/top of the water manifold and returned back into below that area(mine had no oil cooler). I'd have to go look again to confirm. The 237 manifold does not have a fitting in the front since it has the water filter set up on it. Then the oil cooler does not have any fitting in the front either. I'll get some pics and post them, likely tomorrow night.

Hmmm, ok. Only problem is I have the 673 waterpump on it. I have the fitting on the bottom of it, that is where the line goes to the head of the air compressor. I do have a fitting in the top of the front manifold where I was going to hook one line(that motor just has a plug in it). Just not sure of the water flow and where I would need to bring it back in? I have the temp sender in the same location as that picture. I have the shutterstat in the same location also.

Nothing. This supposedly came from a fire truck if that matters? The feed for air compressor is on bottom of water pump. No other holes like on my old motor. This having an oil cooler makes it slightly different set up. Just curious if anyone has an r model with 237 to see where they route the hoses.