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Author Topic: LML Silverado Duramax C-Max build thread part 4  (Read 56125 times)

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Offline Flyin6

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Re: LML Silverado Duramax C-Max build thread part 4
« Reply #900 on: January 02, 2018, 07:33:39 PM »
Yeah hose connections leak during winter, the rubber shrinks. That connection doesn't have a clamp tho, correct? Just a plastic ring? Might have disturbed it when you installed the drain...

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 I went deer hunting today and was sweating my rear off by 10:00 in just a t-shirt

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Lower radiator hose with the cast in "T"

My money says the leak, if you want to call it that, is uphill of that a bit, just collecting on that junction. although I can't prove that with evidence.

About the super cold temps.

Over the life of the truck, about 99% of the problems I have encountered all occur during radical dips in ambient temp.

So I'm not going to loose any sleep over this issue.
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Offline stlaser

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Re: LML Silverado Duramax C-Max build thread part 4
« Reply #901 on: January 02, 2018, 08:37:23 PM »
Good deal, we all know you old guys need your beauty rest......  :likebutton:
Learn the rules like a pro so that you can break them like an artist -Pablo Picasso-

Offline JR

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Re: LML Silverado Duramax C-Max build thread part 4
« Reply #902 on: January 02, 2018, 09:12:00 PM »
I think that is part of the $200 house that is a bear to change!
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Offline Sammconn

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Re: LML Silverado Duramax C-Max build thread part 4
« Reply #903 on: January 02, 2018, 11:04:36 PM »
Don, that $200 piece of junk will do that.
It's a terrible design, I have one new in box of truck.
Mine started leaking again...sometime back the first dip to -20 or so.
I'm currently hoping to make it till next summer to replace it again.
Then I may do some 'research' if barbed fittings and clamps will work.

It's a real PITA to change as the moulded junk connectors don't like to fit through the small spaces they need to go through. Best done on a warm day. The clamp up at the water pump sucks to get to also.
I just don't want to wind up missing a digit or limb.  I can sometimes get in a hurry to get results.
Sam

Offline Bigdave_185

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Re: LML Silverado Duramax C-Max build thread part 4
« Reply #904 on: January 02, 2018, 11:23:25 PM »
Sounds like we need to get a write up on this going.  I am sure mine will start leaking too after getting back here to the cold weather


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Offline rpar86

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Re: LML Silverado Duramax C-Max build thread part 4
« Reply #905 on: January 03, 2018, 01:54:52 AM »
Don, that $200 piece of junk will do that.
It's a terrible design, I have one new in box of truck.
I think that is part of the $200 house that is a bear to change!


Haha, I was going to chime in about the price of that hose, too! :)


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Offline Flyin6

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Re: LML Silverado Duramax C-Max build thread part 4
« Reply #906 on: January 03, 2018, 11:14:42 AM »
Didn't know we were on to something

OK, I'll get to it and figure out what to do next.

I'm almost dreading it, but time to go outside and see if old C-Max leaked any last night. I did however plug in the block heater...

Let you know in a jiffy...
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Offline Flyin6

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Re: LML Silverado Duramax C-Max build thread part 4
« Reply #907 on: January 03, 2018, 12:17:46 PM »
OK, still leaking:
Site owner    IS 6:8  Psalm 91 
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Offline Flyin6

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Re: LML Silverado Duramax C-Max build thread part 4
« Reply #908 on: January 03, 2018, 12:21:52 PM »
Notice the hose junction in the blurry picture.

Second vertical line.

I cannot with any certainty ascertain if the "T" junction is the only leak

or

If the new vertical line has migrated onto the top of the "T" creating the appearance of that vulcanized, funky transition simply being a collection point for a drip.

But I can see what is uphill from that, and that would be a hose clamp.

So,

for my next act, I think I'll snug that critter up and scrape a bit more skin off my good hand.
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Offline Bigdave_185

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Re: LML Silverado Duramax C-Max build thread part 4
« Reply #909 on: January 03, 2018, 02:31:06 PM »
Toss some parts cleaner on it and dry it off really well than apply a form of white powered or flower to he area. Should help visually to see if the leak is coming from higher up. 

Not sure if this is new knowledge but it has worked for me.


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Offline EL TATE

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Re: LML Silverado Duramax C-Max build thread part 4
« Reply #910 on: January 03, 2018, 04:22:28 PM »
That's a great old school trick right there Dave, wish I had thought of that a long time ago. I was "mystery leaking" in the wife's Yukon, only after running down the hwy and never when parked. I could see water marks down the block and assumed water pump, but borrowed this guy from a buddy at work, https://www.harborfreight.com/radiator-pressure-tester-kit-63862.html and found it was the passenger side gasket had been installed without RTV. I replaced the pump anyway since it had 70k on it, but the pressure tester was 100% accurate.
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Offline Sammconn

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Re: LML Silverado Duramax C-Max build thread part 4
« Reply #911 on: January 03, 2018, 06:07:29 PM »
My bet is on the tee junction. My OEM hose was really stuck on good.

It may well be the clamp joint too.
That's the one you'll loosen to remove said hose...
I just don't want to wind up missing a digit or limb.  I can sometimes get in a hurry to get results.
Sam

Offline Flyin6

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Re: LML Silverado Duramax C-Max build thread part 4
« Reply #912 on: January 03, 2018, 08:16:37 PM »
OK, so I tightened up the clamp up at the water pump outlet. (Inlet)
That clamp was pretty loose. That may well have been the culprit. I have never put a wrench on that worm gear, so maybe over the past six years it has loosened that much.

I took it to the truck wash, where they did the chem clean thing to the UC, then drove about fetching lumber for the next project, then drove it home. Hours later, there is not a spot on the driveway. Not taking any bets just yet, but so far so good.

Oh, and the tires continue to ride very well!
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Offline Bigdave_185

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Re: LML Silverado Duramax C-Max build thread part 4
« Reply #913 on: January 03, 2018, 10:41:50 PM »
So two days ago you were done with them and wanted to return to Toyo tires.   What?s the verdict ? You rotated them was all?


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Offline TexasRedNeck

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Re: LML Silverado Duramax C-Max build thread part 4
« Reply #914 on: January 04, 2018, 08:28:25 AM »
So two days ago you were done with them and wanted to return to Toyo tires.   What?s the verdict ? You rotated them was all?


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D rated tires just aren't made to handle a 10k lb+ truck Don.
They would probably work great on Shawn's Jeep
tho.

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On the tires: Good news!

I must have had one bad one, and it must have been the right rear.

Reason, that is the tire that is currently hanging on the spare carrier and my truck drives completely normally. Now I am not saying that the issue may not reappear, but I am saying that I drove the truck down to the farm 50+ miles pulling the trailer with the outhouse strapped to it (What #3,500 ish??) and back at 45-60MPH and encountered no vibration at all. I had no steering wheel shimmy and with regard to the steering, it was greatly improved. Not much crown on these narrow country roads to speak of and for 75% of the distance there you cannot keep the steering wheel still less than 2 seconds. No exaggeration, the roads are literally constant turns most of the way there! Point with all that being that there is no way to check to see if it wanders following the crown just yet.
If I could keep this ride, these tires would do their job and get me through another year and then I'd upgrade to the "E" rated tires which hopefully, then, I could easily pay for.

yup rotated
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Offline Flyin6

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Re: LML Silverado Duramax C-Max build thread part 4
« Reply #915 on: January 14, 2018, 08:01:40 PM »
And to report a bit further along, the vibration ans wheel shimmy is still gone. I think we may have gotten the rascally rabbit!

Truck is driving along just fine and working offroad well in the winter mud/ice stuff.
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Offline Bigdave_185

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Re: LML Silverado Duramax C-Max build thread part 4
« Reply #916 on: January 14, 2018, 08:24:01 PM »
Still no leak from the lower rad hose?


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Offline Flyin6

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Re: LML Silverado Duramax C-Max build thread part 4
« Reply #917 on: January 15, 2018, 10:33:06 AM »
Still no leak from the lower rad hose?


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Dave,
It showed a spot one day, then it hasn't since then.
I stopped checking the past few days since the garage has some wet spots on the floor, and it would be hard to determine.
The problem does seem to be related and proportional to the cold.
Site owner    IS 6:8  Psalm 91 
NSDQ      Author: Distant Thunder