Engine Thermostat - Detroit 6V92

[jesupbill]

How hard is it to change the thermostat in my 84PT40 6V92? Is there
one or two thermostats?

Thanks
Bill Garlen
Jesup, GA
84PT40

[Curt Sprenger]

The two forums have good information. Look in the FILE Section, Detroit
Diesel topics. Changing the thermostats isn't hard. You may want to change
the fuel hoses while the coolant tubes/hoses are removed.

On 9/28/07, jesupbill wrote:
>
> How hard is it to change the thermostat in my 84PT40 6V92? Is there
> one or two thermostats?
>
> Thanks
> Bill Garlen
> Jesup, GA
> 84PT40
>
>
>



--
Curt Sprenger
1987 PT38 8V92 "MacAttack Racing"
Anaheim Hills, CA


[Non-text portions of this message have been removed]

[sfedeli3]

Hi Bill,

There are two on the 6V92 and the kits are available at
DD/Allison's parts counter. Make sure that you get new gasket kit too.
Since you are draining upper part of the system- have the DD shop make
you some new silicone hoses for the upper radiator pipe and the
crossover pipe. There are drains on the two bowls. The large
cross-pipe and pipe to the top of the radiator will have to drain
through the bowls. A funnel and vacuum hose worked great for me- I
drained the anti-freeze through a coffee filter in a small funnel, put
a hose on the end of the funnel and put the anti-freeze in a clean
5-gallon bucket. I checked the pH and nitrates and re-used it. I
reduced my thermostats to 170 degrees and have had no problems since
2005 running a little cooler.

Shane Fedeli
85PT40
Hershey, PA


--- In WanderlodgeForum@yahoogroups.com, "jesupbill" wrote:
>
> How hard is it to change the thermostat in my 84PT40 6V92? Is there
> one or two thermostats?
>
> Thanks
> Bill Garlen
> Jesup, GA
> 84PT40
>

[jesupbill]

Thanks Shane,

Here's what happened. My coach has never run hot. It sits at 190
except sometimes in the mountains of North Georgia, Alabama or
Tennessee it will heat up some. I live in South (hot) Georgia. Mostly
no long trips as I still work full time; trips around South Georgia,
Florida, etc.

Yesterday I decided to replace the last remaining older tire on the
tag. I went to pick up the coach and drove it home, about 1 mile, and
when I pulled it in I heard a boiling sound coming from the passenger
side of the engine. It was not making the same boiling noise on the
driver side. That is why my first guess was thermostat.

I usually have found most parts I needed at NAPA because we have a
lot of log trucks in this area with Detroits. He has 180s in stock
but not 170s. I don't think he will have the gasket kits either. I am
also worried it could be a water pump.

Bill Garlen
Jesup, GA
84PT40

--- In WanderlodgeForum@yahoogroups.com, "sfedeli3" <sfedeli3@...>
wrote:
>
> Hi Bill,
>
> There are two on the 6V92 and the kits are available at
> DD/Allison's parts counter. Make sure that you get new gasket kit
too.
> Since you are draining upper part of the system- have the DD shop
make
> you some new silicone hoses for the upper radiator pipe and the
> crossover pipe. There are drains on the two bowls. The large
> cross-pipe and pipe to the top of the radiator will have to drain
> through the bowls. A funnel and vacuum hose worked great for me- I
> drained the anti-freeze through a coffee filter in a small funnel,
put
> a hose on the end of the funnel and put the anti-freeze in a clean
> 5-gallon bucket. I checked the pH and nitrates and re-used it. I
> reduced my thermostats to 170 degrees and have had no problems since
> 2005 running a little cooler.
>
> Shane Fedeli
> 85PT40
> Hershey, PA
>
>
> --- In WanderlodgeForum@yahoogroups.com, "jesupbill" wrote:
> >
> > How hard is it to change the thermostat in my 84PT40 6V92? Is
there
> > one or two thermostats?
> >
> > Thanks
> > Bill Garlen
> > Jesup, GA
> > 84PT40
> >
>

[sfedeli3]

Hi Bill,

I replaced all hoses, water and fuel pump earlier this year. It was
a bear of a job- but good preventative maintenance IMHO (I had the $$
and time to do the job now vs. on the road somewhere). The water pump
will "weep" when it is bad. Mine old one was fine- there really aren't
too many parts in them to go bad. If you have an inkling to do the
water pump, now is the time to do the fuel pump and thermostats too-
otherwise you will be draining the system twice. I have what they call
a "walking" pump- take a picture of yours to the DD parts counter-
yours could be a "standing" pump. They also had put a plug in my new
one where the heater hose is connected- have them remove it for you. I
could not remove mine with a 1/2" impact wrench. If they are nice,
the DD shop will make new hoses for the pump an no cost. If you get
the parts, we could work on this at the RATS rally. I hope to get there.

-Shane

--- In WanderlodgeForum@yahoogroups.com, "jesupbill" wrote:
>
> Thanks Shane,
>
> Here's what happened. My coach has never run hot. It sits at 190
> except sometimes in the mountains of North Georgia, Alabama or
> Tennessee it will heat up some. I live in South (hot) Georgia. Mostly
> no long trips as I still work full time; trips around South Georgia,
> Florida, etc.
>
> Yesterday I decided to replace the last remaining older tire on the
> tag. I went to pick up the coach and drove it home, about 1 mile, and
> when I pulled it in I heard a boiling sound coming from the passenger
> side of the engine. It was not making the same boiling noise on the
> driver side. That is why my first guess was thermostat.
>
> I usually have found most parts I needed at NAPA because we have a
> lot of log trucks in this area with Detroits. He has 180s in stock
> but not 170s. I don't think he will have the gasket kits either. I am
> also worried it could be a water pump.
>
> Bill Garlen
> Jesup, GA
> 84PT40
>
> --- In WanderlodgeForum@yahoogroups.com, "sfedeli3" <sfedeli3@>
> wrote:
> >
> > Hi Bill,
> >
> > There are two on the 6V92 and the kits are available at
> > DD/Allison's parts counter. Make sure that you get new gasket kit
> too.
> > Since you are draining upper part of the system- have the DD shop
> make
> > you some new silicone hoses for the upper radiator pipe and the
> > crossover pipe. There are drains on the two bowls. The large
> > cross-pipe and pipe to the top of the radiator will have to drain
> > through the bowls. A funnel and vacuum hose worked great for me- I
> > drained the anti-freeze through a coffee filter in a small funnel,
> put
> > a hose on the end of the funnel and put the anti-freeze in a clean
> > 5-gallon bucket. I checked the pH and nitrates and re-used it. I
> > reduced my thermostats to 170 degrees and have had no problems since
> > 2005 running a little cooler.
> >
> > Shane Fedeli
> > 85PT40
> > Hershey, PA
> >
> >
> > --- In WanderlodgeForum@yahoogroups.com, "jesupbill" wrote:
> > >
> > > How hard is it to change the thermostat in my 84PT40 6V92? Is
> there
> > > one or two thermostats?
> > >
> > > Thanks
> > > Bill Garlen
> > > Jesup, GA
> > > 84PT40
> > >
> >
>