OK, boys, I'm installing the OBA this weekend. I pulled the AC last weekend, added a power steering cooler while I had the front end apart. I'll post up some pics and a parts list when I'm done with the OBA (I know Hooper is interested). I'll have a coupler at the front and back of the rig. Safety release, in-cab pressure gauge and on/off switch.

Here is a quick run down of parts I have.

IH York compressor
5 Gallon Air Tank, purchased from autoparts store $35.00, going to use the pressure safety value from the tank.
In line regulator, ACE $10.00
Found a small filter that will push onto a barb fitting at the Autoparts store $2.00
35' of 3/8" air hose, ACE $10.00
Pressure on/off switch, ACE $15.00
Pressure gauge, ACE $7.00
Two couplers and various hose barb's and blocks. ACE ~$40.00
House clamps, ACE ~$5.00
Total Parts thus far: ~$125.00

Couple of questions

Anyone know what the draw is for the clutch for the York? I'm going to swap the Suction and Compressor lines, run the smaller A/C hose to a barb into a block. This should prevent the air hose from melting, sound good? I'm worried about getting dirt and mud into the couplers, anyone know where I can find caps? Any other thoughts or comments?

Joe

for cap i used some left over master cyl boots they have a small hole in them for water to get out if it gets in they fit right over the quick connector

I'm worried about getting dirt and mud into the couplers, anyone know where I can find caps?

Use crutch tips. They come in different sizes, and one of the larger sizes is a perfect fit for your coupler. Any pharmacy and most supermarkets will have these.

Originally posted by jdjanda
Safety release, in-cab pressure gauge and on/off switch.


In cab pressure gauge? Bling Bling! :flipoff2:

My gauge is under the hood with all the other OBA crap - everything but the master on/off switch, which is also a keyed power source.



Anyone know what the draw is for the clutch for the York?


Not much, but I don't remember just how much..


I'm going to swap the Suction and Compressor lines, run the smaller A/C hose to a barb into a block. This should prevent the air hose from melting, sound good?


I used a very short section of hose from my "barb" mounts on the compressor itself to another barb which then goes to pipe, makes a 90, then more pipe.. THEN to a flexible line and off to the rest of the stuff. The lines live pretty well that way.

On the OBA on my Travelall and Travelette, I fab everything up so it's a big pipe-only loop around the compressor itself. Very easy to install/remove that way - just unbolt the 4 compressor mounting bolts, disconnect the clutch wire, and lift it off.


http://tigger.tmcom.com/~tsm1/scout/jpg/74tette/8_19_2001/air_compressor.jpg


I'm worried about getting dirt and mud into the couplers, anyone know where I can find caps? Any other thoughts or comments?


I haven't figured out how to keep the mud out yet.. and it IS a problem even with my under-hood only attachment.

Plastic baggie and a rubber band..

I was going to try taking a regular male fitting, then capping it, but using a big washer or something between the cap and the disconnect fitting to try and "cap"/cover the coupler..

-Tom
http://www.tmcom.com/~tsm1/scout/faq/77onboardair.html

Your next step should be a hand-throttle, too..

Originally posted by Honkylips


Use crutch tips. They come in different sizes, and one of the larger sizes is a perfect fit for your coupler. Any pharmacy and most supermarkets will have these.

No MC boots around, so I'll have to go with this idea, I like..

Originally posted by tsm1mt


In cab pressure gauge? Bling Bling! :flipoff2:

Have you tried to open my hood? If I have to open the hood to monitor pressure forget about. I might just go with the switch, easier that way, but if I pipe air into the cab, then I can use the air powered :blender: in cab



Originally posted by tsm1mt

http://tigger.tmcom.com/~tsm1/scout/jpg/74tette/8_19_2001/air_compressor.jpg

How well does that fit in a Scout :eek: I'd like to be able to change the plugs without pulling the system.

Originally posted by jdjanda

Have you tried to open my hood? If I have to open the hood to monitor pressure forget about. I might just go with the switch, easier that way, but if I pipe air into the cab, then I can use the air powered :blender: in cab
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You know, I think my pressure gauge cracked and broke (the dial/face) some time back.. but I can't say for certain since I NEVER look at the darn thing. It was cool for the first month.. now it's just in the way of me hooking up the tire-filling air hose. FWIW.

Air in the cab could be useful with a blow-gun for blowing the dust and dirt out, too!

Heck, with one of those siphon-feed sand-blasting gizmos you could use it as a bilge pump for those deep-water crossings, too!



http://tigger.tmcom.com/~tsm1/scout/jpg/74tette/8_19_2001/air_compressor.jpg
How well does that fit in a Scout :eek: I'd like to be able to change the plugs without pulling the system.

I don't think it'd be a problem in a Scout, either. The flat part of the pump (opposite the fittings) is usually not far from the passenger side inner fender on a SII - very close to a second battery if you have one mounted there.

Otherwise, everything sits around/on the pump.

You might notice a "hole" in about the middle of the picture, or mid-right of the pump assembly. That's where my extended oil filler sits, so the system wraps around the oil filler.

I don't think plug changes would be any more difficult this way than any other method. You just need to get around the compressor, which thankfully isn't too hard on the passenger side since the first plug isn't right at the front of the block (vs. the power steering pump on the driver's side).

Most of this setup sits over the valve cover.

You have to pull the compressor to get the valve cover off.. but I haven't found a way around that yet.

You have to be creative just to get the cover off w/o removing the bracket assembly..

Joe and Tom,

what type of A/C fitting is on your compressor head? Mine has some big barb fittings with the bolt on flange setup. Sure would be a lot easier if they were threaded. Were yours threaded originally or did you rob them from something else? OR are yours like these and I am looking at your picture wrong?

Here they are:

Originally posted by Hayraker
Joe and Tom,

what type of A/C fitting is on your compressor head? Mine has some big barb fittings with the bolt on flange setup. Sure would be a lot easier if they were threaded. Were yours threaded originally or did you rob them from something else? OR are yours like these and I am looking at your picture wrong?

Here they are:

The compressor on my trail Scout (came off a Jeep) has barbs like yours.

The compresson on my tow rigs is from an IH and had flared threaded compression fittings, which I was able to adapt down to regular 3/8" NPT.

Originally posted by Hayraker
Joe and Tom,

what type of A/C fitting is on your compressor head? Mine has some big barb fittings with the bolt on flange setup. Sure would be a lot easier if they were threaded. Were yours threaded originally or did you rob them from something else? OR are yours like these and I am looking at your picture wrong?

Here they are:

OBA (http://www.onboardair.com) has the fittings you are looking for. Makes for very clean install.

Joe

Originally posted by jdjanda


OBA (http://www.onboardair.com) has the fittings you are looking for. Makes for very clean install.

Joe

Thanks, I guess since I am using spare junk for the rest of the parts I could spare $25 for a couple of fittings, hell I had to pay $20 just to keep up with Jones' around here and get my little red thingy.