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SWATPARAMEDIC

Water leak after 24 valve rebuild

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SWATPARAMEDIC    0
SWATPARAMEDIC

I rebuilt by '01 24 valve truck and ran fine for a day. After driving about 5 miles to the store it started leaking on the passenger side at the oil cooler. Is there a particular trick to putting those on? Also another possibility is the AC bracket. When I put that on I didn't realize a gasket went in the block. I got that gasket and ordered the oil cooler gaskets to put in tomorrow. I'd appreciate any advice or insight on that.

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Blueox01    0
Blueox01

Did'nt you post awhile back asking if there was a gasket that went in were the water outlet bolts to the block?

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Blueox01    0
Blueox01

Was it a flat round gasket that rest's in a recessed area in the block,like i posted on your earlier post when you was asking if there was a gasket?

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Blueox01    0
Blueox01

Sorry i was'nt able to help you prior to you putting this back together. thought it would have come with your gasket kit,hope you hav'nt charged your A/C system yet.

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SWATPARAMEDIC    0
SWATPARAMEDIC

That's ok, I appreciate the assistance anyway. I did charge it already, but I want to get the leak found and stopped so recharging it isn't that big of an issue. I didn't have to take lines of of the compressor to take it apart, the only lace it came apart was at the condenser to take it out.

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Blueox01    0
Blueox01

My money's on the water outlet, unless you did'nt use a gasket on the oil cooler ,then i'd bet on both,ever has a question call cummins or frieghtliner,just don't tell frieghtliner it's a 5.9 in a dodge,give them the engine#

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SWATPARAMEDIC    0
SWATPARAMEDIC

There were 2 gaskets that came with the kit and used cooper coat on the gaskets. Thanks for the help, I'll start with the water gasket first and then pressure test it and see if that fixed it first.

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SWATPARAMEDIC    0
SWATPARAMEDIC

Yes, I did get it fixed. The fiber oil cooler gasket blew out, there was a spot in the middle of it that gave out. The replacement one from Cummins was metal and has held up so far.

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SWATPARAMEDIC    0
SWATPARAMEDIC

Or at least I did until this morning. I shut it off after a short drive and it started trickling out again from behind the cooler. We used copper coat spray for both sets of gaskets, could that have had something to do with it?

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smokeythedodge    0
smokeythedodge

Or at least I did until this morning. I shut it off after a short drive and it started trickling out again from behind the cooler. We used copper coat spray for both sets of gaskets, could that have had something to do with it?

Man that aint good.... What type of gaskets were they? Metallic? or kinda like cardboard material? Lot of Okies on here! I'm down by Shawnee, ok.

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SWATPARAMEDIC    0
SWATPARAMEDIC

The first one was fiber that came with the engine kit. The second was a metal one from Cummins. I can't figure out what I'm doing wrong or if there is a certain trick to doing it. I'm thinking about just taking to Dodge an let them do it.I'm just outside of Tulsa

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smokeythedodge    0
smokeythedodge

The first one was fiber that came with the engine kit. The second was a metal one from Cummins. I can't figure out what I'm doing wrong or if there is a certain trick to doing it. I'm thinking about just taking to Dodge an let them do it.

I'm just outside of Tulsa

I can't see how it would leak.... Now are you talking about the gasket on the ac bracket/water pump outlet?

Posted Image

Or the one behind the oil cooler?

Posted Image

--- Update to the previous post...

Nah don't take it dodge, you'd spend more trailering over there than fixing it. You'll get it done, if not I could probably get it for you one weekend I aint far from ya. It's probably behind the a/c bracket, you make sure you took some real fine sandpaper to both surfaces? Get em both cleaned up real good? Little rough is best with a bit of crosshatch from sandpaper. Then torque the bolts to spec, go over them 4 or 5 times, it oughta be good to go. PM me for my cell number if you need to

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SWATPARAMEDIC    0
SWATPARAMEDIC

It's the bottom picture where the leak is coming from. The gascket there goes between the plate for the oil filter and the cooler. Mine is leaking from between the cooler and the block at the metal gasket. We cleaned the plate in solvent and used brake cleaner on a rag for the block but didn't sand anything. The first leak would leak with it just sitting out in the driveway even several hours after driving it. This one has just a trickle only when driving it and stops when the engine does. I work weekends except for Sun, Ill get your number and have a picture on my phone of the leak.

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white01    0
white01

are you 2 going up to topeka to the NHRDA 1st annual world finals this weekend?i am!:thumbup2::thumbup2:

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Blueox01    0
Blueox01

Did you use any RTV(very thin coat) on the gaskets? Are the any gouges in any of the surfaces? Just can't think of why this is giving you such a problem. wish i had a simple answer. You did replace your water outlet gasket with the right one while you was at it.

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Wild and Free    1,117
Wild and Free

Throw the silicone and copper spray in the garbage can and almost all your head aches will be cured......Put the gaskets on dry and clean and they will seal. If they needed something else to help them seal they would come with it already infused into the gasket.

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Blueox01    0
Blueox01

Throw the silicone and copper spray in the garbage can and almost all your head aches will be cured......Put the gaskets on dry and clean and they will seal. If they needed something else to help them seal they would come with it already infused into the gasket.

Well i used a little sealant when i rebuilt my engine at 450k not a leak yet at 768k,guess i really messed something up!

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Wild and Free    1,117
Wild and Free

Well i used a little sealant when i rebuilt my engine at 450k not a leak yet at 768k,guess i really messed something up!

I have seen 2 engines off the top of my head that failed due to RTV. 1 had so much rtv inside the engine is completely plugged the oil pickup screen, the other was used in place of a gasket on an oil cooler which you can imagine what happened. RTV doesn't hold pressure. lost all the oil and spun some main and rod bearings. Both do it yourself mistakes that could have been prevented with proper cleaning and gaskets. Where, what type, and how much sealant is the thing that most people don't have a clue on. In most cases it is best to leave it out of the equasion unless there is a need for a specific product in an area. Most leaks are caused by a dirty uneven surface and improper torques which cause warping ect. I do this for a living, these little 5.9 engines are like a lawn mower engine to most as I work on half million dollar v12 and v16 diesel engines so I know a wee bit about how critical leak free needs to be as "MSHA" Mine safety and health administration Can slap extremely high fines on companies for leaks on equipment.

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Blueox01    0
Blueox01

Don't need to get in a p****ing contest over trying to help this guy,but if your read my post i said(a very thin coat) just enough to fill any small imperfections on either surface,not in place of a gasket.But i'm Impressed with the v12/v16 engines

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SWATPARAMEDIC    0
SWATPARAMEDIC

I didn't use RTV on either gasket. After we took the first one off we could see where it failed. It was fiber and the second one is metal. It just seeped a little and only left a small puddle once. I don't know why I'm havign such a problem and not aware of a particular torque sequence.

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