REAL MAN TRUCKWORKS & SURVIVAL

VEHICLES, CAMPERS, and BOATS => General Maintenance, How to/DIY projects => Topic started by: cudakidd53 on May 25, 2018, 08:35:51 AM

Title: SOS Thermostats
Post by: cudakidd53 on May 25, 2018, 08:35:51 AM
Truck through a cold this morning and now have to replace thermostats.  Ken-Don et al; how big job is that on LML?  Is it something I can get done in a day without any difficulties?
Title: Re: SOS Thermostats
Post by: Flyin6 on May 25, 2018, 09:12:08 AM
Truck through a cold this morning and now have to replace thermostats.  Ken-Don et al; how big job is that on LML?  Is it something I can get done in a day without any difficulties?
Yea,
T-stats not that big of a deal
Everything is up on top and forward
Get a comfortable cushion to lay on!
Title: Re: SOS Thermostats
Post by: cudakidd53 on May 25, 2018, 09:33:35 AM
Can you give me the Cliff Notes version of what I’m gonna have to tear down?   Or is it something that I would have seen in the thread on see Max while you were doing the fuel pump?
Title: Re: SOS Thermostats
Post by: KensAuto on May 25, 2018, 10:37:50 AM
Take bolts out, remove t-stats, install new ones, put bolts back in, add coolant, rinse.

Jeez Mike, need someone to hold your hands?  :)

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Title: Re: SOS Thermostats
Post by: cudakidd53 on May 25, 2018, 11:50:24 AM
Take bolts out, remove t-stats, install new ones, put bolts back in, add coolant, rinse.

Jeez Mike, need someone to hold your hands?  :)

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You can type  awfully well for one armed mechanic! You know it’s more involved than that you rascal!  I’m trying to avoid the one-day project turning into three!
Title: Re: SOS Thermostats
Post by: Nate on May 25, 2018, 11:54:03 AM
I do believe there was a DIY done on it on DF?

http://www.duramaxforum.com/forum/how-tos-diy-write-ups/148616-diy-_-thermostat-replacement.html

I used this one and even commented on it when I did mine on my LBZ.
Title: Re: SOS Thermostats
Post by: Flyin6 on May 25, 2018, 12:04:03 PM
Can you give me the Cliff Notes version of what I’m gonna have to tear down?   Or is it something that I would have seen in the thread on see Max while you were doing the fuel pump?
Ya, Mike, plenty of pics in my CP3 install blog

But like Kenneth said, its fairly easy by comparison to most things one needs to do to these trucks performing routine maintenance.
Title: Re: SOS Thermostats
Post by: cudakidd53 on May 25, 2018, 12:34:09 PM
 I got a question on the serpentine belt tensioner. Do you just simply put a breaker bar in there and turn it counterclockwise to loosen it? Or is there a nut and bolt that needs to be loosened set the tension and retighten that Notten bolt? It appears online video show you just put a breaker bar in there and turn it the correct way to take tention off the belt and then reverse that process and it locks in place on its own. Do I have that correct?
Title: Re: SOS Thermostats
Post by: Nate on May 25, 2018, 12:40:49 PM
just put a breaker bar and give it a turn
Title: Re: SOS Thermostats
Post by: KensAuto on May 25, 2018, 03:29:45 PM
Wait why you taking off the belt? I need to do mine as well, since it overheated a couple years back. ...I'll look at it to see how hard. I think these are easier than previous models....and I haven't done a LML yet.

...just looked Mikey. Don't take the belt off, just unbolt the shroud and the fuel test port and move it out of the way. Doesn't look too bad.
Title: Re: SOS Thermostats
Post by: cudakidd53 on May 25, 2018, 05:49:56 PM
Thanks Ken - I've been looking at it too, scratching my head, buying tools I now probably don't need.....based off on-line video not realizing it was for an earlier model.  At least I'm prepared for replacing the serpentine belt sometime later!

Does anybody know how I'm going to bleed the coolant system of air upon reassembly?  I'm not spotting a bleed nut - only what I think is the fuel test port (tube with black cap that reminds me of an A/C service port.

I'm thinking I'll pump about 2-3 gallons of coolant out of the reserve tank hoping to avoid anti-freeze everywhere when i break the hose/housing loose.
Title: Re: SOS Thermostats
Post by: KensAuto on May 25, 2018, 06:17:11 PM
If you "cheat" and just unbolt it (leave upper hose on), swap t-stats, and top off, you should be good. It's not an issue unless air gets trapped under the t-stats.
Hose off the mess before starting, especially the belt.
That's the safest way (but a little messy)
Title: Re: SOS Thermostats
Post by: cudakidd53 on May 25, 2018, 06:46:47 PM
LOL - mechanic tricks - charge manual specified time rate, perform "south of the boarder" technique and "detail" the engine for the customer!   :grin:  :likebutton:
Title: Re: SOS Thermostats
Post by: TexasRedNeck on May 25, 2018, 07:11:52 PM
you are already into it just flush and replace the coolant while you are there. You know it hasnt been done since new and it is overdue.  proably why your thermos went bad....
Title: Re: SOS Thermostats
Post by: Nate on May 25, 2018, 07:12:32 PM
well its now the end of the day, whats the outcome?!
Title: Re: SOS Thermostats
Post by: cudakidd53 on May 25, 2018, 08:23:53 PM
Today was last day of work so I have not cut into it. Went and purchased everything I needed so I can get at it first thing in the morning. Busy looking at planning my attack!
Title: Re: SOS Thermostats
Post by: Nate on May 26, 2018, 10:31:00 AM
the DIY portion has been moved to here:

http://real-man-truckworks-and-survival.com/index.php?topic=3478.msg75340#msg75340
Title: Re: SOS Thermostats
Post by: TexasRedNeck on May 26, 2018, 02:14:49 PM
and where will theDOT portion go????
Title: Re: SOS Thermostats
Post by: Bigdave_185 on May 26, 2018, 04:07:06 PM
My lbz has a bleeder screw.  The new ones don’t?


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