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Moderator
Join Date: Jan 2005
Location: Meadows of Dan, Virginia
Posts: 9,132
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This is the 1969 version of the separator (NSN 2530-859-7279). The treated air is used for pressurization of cab/engine components and brake drums.
Bjorn
Virginia's Blue Ridge Mountains
(Link to PS magazines: http://old.steelsoldiers.com/index.php?name=gallery)
Avatar: XM757 in OK prepared for 1,000 mile trip home. Part of 6,000 mile journey in 2006.
1968 M49A2C modified with 1960 M756A2 truck bed and 1975 HIAB 765A knuckleboom. Heated dual tank system for biodiesel/veggie oil use.
1969 Ford XM757 8x8, 5-ton Pershing 1A truck tractor, the "improved" MV.
"Some things can't be made better, just differently......a lot of things actually"
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Administrator
Join Date: Aug 2003
Location: Franklin, VA
Posts: 4,337
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Quote:
Originally Posted by cranetruck
This is the 1969 version of the separator (NSN 2530-859-7279). The treated air is used for pressurization of cab/engine components and brake drums.
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Nice old-school separator! Do you get much moisture out of it when you dump it?
Chris Stansbury, founder of Chris' CUCV Homepage in 1998 and Steel Soldiers in 1999.
1992 BMY M925A2 - FOR SALE!!
1991 BMY M923A2, SOLD
Father, lead me, 'cause I can't do this alone.
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Moderator
Join Date: Jan 2005
Location: Meadows of Dan, Virginia
Posts: 9,132
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Quote:
Originally Posted by steelsoldiers
Nice old-school separator! Do you get much moisture out of it when you dump it?
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Don't run the truck enough to notice anything yet. The system has a factory installed alcohol evaporator, so there is always a trace of moisture/alcohol in the air tanks since I have the jar filled to some extent at all times.
The CTIS on your truck may be more sensitive to dirty air then anything on mine, though.
Bjorn
Virginia's Blue Ridge Mountains
(Link to PS magazines: http://old.steelsoldiers.com/index.php?name=gallery)
Avatar: XM757 in OK prepared for 1,000 mile trip home. Part of 6,000 mile journey in 2006.
1968 M49A2C modified with 1960 M756A2 truck bed and 1975 HIAB 765A knuckleboom. Heated dual tank system for biodiesel/veggie oil use.
1969 Ford XM757 8x8, 5-ton Pershing 1A truck tractor, the "improved" MV.
"Some things can't be made better, just differently......a lot of things actually"
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4 Star General
Join Date: Apr 2008
Location: Reidsville N.C.
Posts: 1,314
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I saw that truck a couple of weeks ago when were at John`s picking up my M109 . It will be a fine ride
I do the best I can with what I have to work with. Now what 
avatar: My daughter and I 1972 Ft, Sill OK
M35A2
M105A2
M101
M416
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Administrator
Join Date: Aug 2003
Location: Franklin, VA
Posts: 4,337
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Thanks Neil. Hope you are enjoying that 109. Hopefully we can do that outer banks trip next year that we've all been talking about and get us all together.
Chris Stansbury, founder of Chris' CUCV Homepage in 1998 and Steel Soldiers in 1999.
1992 BMY M925A2 - FOR SALE!!
1991 BMY M923A2, SOLD
Father, lead me, 'cause I can't do this alone.
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Administrator
Join Date: Aug 2003
Location: Franklin, VA
Posts: 4,337
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Brake Chamber Rebuild
I have been searching for air brake chambers with no real success. People either wanted too much money for the chambers or had them listed in the system, but didn't have any on hand. I went to my local NAPA Truck and showed them what I was looking for. Out came the huge Bendix book. He took some measurements and found a match. Problem is Bendix doesn't stock them so it would be a custom run and could take a month 
I decided to try my hand at rebuilding a chamber. I ordered a couple of new actuator diaphragms from NAPA for around $3/piece. I tore into one last night to see what I had to work with. That sucker was full of rust! Thankfully, Rockwell painted their brake chambers on the inside too so most of the rust scale came right off. Once I had it apart, I took it to the kitchen sink and scrubbed all of the parts with a brass bristle brush. I got it looking pretty nice so back to the living room for reassembly (yes, my wife is understanding and working on truck bits in the house is nothing new  ). I installed the new diaphragm, stuck the high pressure half on top of that, installed the clamp ring, and torqued down the clamp bolt. Viola! An almost new brake can that you can build in your living room!! I only wish I would have brought the other one home too. Now, I have to redo it on the ground.
Just in case anyone needs to know, the brake chambers are Type-12 Wedge Brake Chambers and they take a Rockwell 2297D2448 Diaphragm (or Midland N-20166 T-12). There is only one moving part inside the chamber and that is the actuator rod which is machined out of heavy steel so there is very little to go wrong with these things.
Here are some photos of course!
Chris Stansbury, founder of Chris' CUCV Homepage in 1998 and Steel Soldiers in 1999.
1992 BMY M925A2 - FOR SALE!!
1991 BMY M923A2, SOLD
Father, lead me, 'cause I can't do this alone.
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Moderator
Join Date: Jan 2005
Location: Meadows of Dan, Virginia
Posts: 9,132
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You learn a lot when you can't get a new one. Been there, done that sort a thing...again and again.
I suspect that even the parts truck would have questionable replacements.
Bjorn
Virginia's Blue Ridge Mountains
(Link to PS magazines: http://old.steelsoldiers.com/index.php?name=gallery)
Avatar: XM757 in OK prepared for 1,000 mile trip home. Part of 6,000 mile journey in 2006.
1968 M49A2C modified with 1960 M756A2 truck bed and 1975 HIAB 765A knuckleboom. Heated dual tank system for biodiesel/veggie oil use.
1969 Ford XM757 8x8, 5-ton Pershing 1A truck tractor, the "improved" MV.
"Some things can't be made better, just differently......a lot of things actually"
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Administrator
Join Date: Aug 2003
Location: Franklin, VA
Posts: 4,337
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Quote:
Originally Posted by cranetruck
You learn a lot when you can't get a new one. Been there, done that sort a thing...again and again.
I suspect that even the parts truck would have questionable replacements. |
Very true! The parts truck was in the same shape because the air lines had been disconnected on those chambers too. At least now I know the diaphragms are good and that it's been done right. The more I work on the air brake system, the less intimidating it becomes. I didn't have to do much with the brakes on the 923A2 so a lot of this stuff is new to me, but it's really pretty simple once you break it down into its components.
Chris Stansbury, founder of Chris' CUCV Homepage in 1998 and Steel Soldiers in 1999.
1992 BMY M925A2 - FOR SALE!!
1991 BMY M923A2, SOLD
Father, lead me, 'cause I can't do this alone.
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General
Join Date: Sep 2008
Location: Coatesville PA
Posts: 415
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Quote:
Originally Posted by steelsoldiers
Once I had it apart, I took it to the kitchen sink and scrubbed all of the parts with a brass bristle brush. I got it looking pretty nice so back to the living room for reassembly (yes, my wife is understanding and working on truck bits in the house is nothing new ). |
Using the kitchen sink as a parts washer!!!!!
And the coffe table , no doubt, as a assembly work bench!!!!
You do have a very understanding wife. Does she have a sister??? 
I have been following along since the start, and enjoy the updates. Keep up the good work.
Randy
M1008
M101A1
MEP-002A on a M116A2
Many 67-72 Chevy trucks/Blazers
My Avatar: David Smoker (my Pop Pop) at Hendricks Field, Sebring FL. 1945
B17 in the background.
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Administrator
Join Date: Aug 2003
Location: Franklin, VA
Posts: 4,337
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Sorry, no sister, Randy! I'm OK so long as there's no grease on anything when I get done. We have a 2 year old boy at home so I can blame some stuff on him now. He likes to play on and around daddy's trucks so the grease could come from him, right?
Chris Stansbury, founder of Chris' CUCV Homepage in 1998 and Steel Soldiers in 1999.
1992 BMY M925A2 - FOR SALE!!
1991 BMY M923A2, SOLD
Father, lead me, 'cause I can't do this alone.
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