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http://www.krtv.com/story/38110637/motor...x.facebook

Rudy, Steve, Mike & Jeannie joined Cindy and I to see the Blue Angels.  Outstanding performance!

On my coach the red level light stays on when the key is on or running. Not sure what the light is for?

Its amazing how far we have come over the past 6 years. when darlene and i started NewellGurus in the summer of 2012 we never imagined what it would become and the friends and associations that would come with it. I appreciate my incredible admin/moderator team that keeps everything running smoothly. darlene and i appreciate each and every one of you.

thank you for being there for us and for others.

tom & darlene mccloud

3 Slide, new Allison 6 speed transmission, hardwood floors except marble in bath and a half. Mid entry.

https://www.rvtrader.com/listing/2003-Ne...5002674818

I've learned a lot since I've wrestled with two instances, on pretty much level ground no less, of the trans temperature gauge indication very slowly but persistently rising until I got uncomfortable. I had the transmission checked by 2 Allison service techs who found the transmission to be in excellent condition and operating just fine. So I changed out the trans temperature gauge and sensor. I've subsequently driven two 230+ mile legs (length similar to when this problem arose) with nothing but sensible readings. Along the way with lots of research I've learned a lot about how all this stuff works together for managing the transmission operating temperature. What follows is for posterity.

Transmission heat is exchanged between a flow of transmission fluid flowing from the tranny through a coil in the bottom (the coolest part) of the radiator. Since these transmissions don't work as well in really cold weather (in fact they may refuse to shift into gear at all) using warm coolant from the engine allows faster warming of the transmission to an acceptable temperature. Then as the transmission heats up due to driving it is then cooled by the engine coolant. The amount of trans fluid flowing through this circuit increases a lot when the converter or retarder is active since these services generate a lot of heat.

The temperature reading on our dash is reporting on the fluid coming out of the transmission after that fluid has passed through the converter, whether active or not, and is on its way to the radiator coil for heating or cooling. When that fluid returns to the transmission its pressure is regulated and then used for lubrication after which it drops into the oil pan for recycling by the transmission oil pump. The external oil filter operates on an entirely separate branch of flow off the oil pump. There is a sensor in the oil pan that is used by the ECU to trigger the check transmission light and prevent shifts when it senses above 270F.

On a 70 degree day on flat conditions at 62mph the temperature gauge varied between 135-150G with the Silverleaf reporting an engine temp of 178-182 and a manual IR gun check of 116F at the bottom of the radiator (obviously is was not while on the highway, I can't run that fast especially while reaching under the back).

Thermodynamically, the engine and transmission are a complex network of heat loads and rejection. In highway driving conditions, heat is added to the engine coolant, in order of occurrence, by the transmission coil, the engine oil cooler, and the engine water jackets. Depending on the coolant temperature the thermostats then bypass some of the coolant around the radiator in an attempt to maintain a temperature of 180F at the inlets to the thermostats. There is no thermal control of the transmission fluid except through the relative temperatures of the of the fluid and the engine coolant at the coil in the bottom of the radiator. Ordinarily, the heat generated in the transmission is quite low compared to the engine so the transmission has little overall effect on coolant temperatures, except when the converter is active and is so for an extended time such as climbing a mountain. In those circumstances the engine is also generating a maximum of waste heat so the combination can exceed the radiator's capability. In those circumstances we need to slow to the point where the transmission will work in a converter lockup mode to minimize the heat creation.

And this brings me to the latest thing I've learned. On my dash is an indicator telling my the gear selected on the gear selector panel and the gear the transmission is currently in (labeled "attained" on the indicator). Between those two indications is a symbol I never noticed before that tells if the converter lockup is on or off. This is really helpful in knowing the full shift status, especially in long uphill pulls as noted above.

I've also learned there are three shift patterns ( I thought there were only 2) for the HT-741 for on-highway use:

1C-2C-2L-3L-4L  Used primarily on buses and RVs

1C-2C-2L-3C-3L-4C-4L  Used primarily on trucks

1C-1L-2C-2L-3C-3L-4C-4L Used primarily on high gross trucks

I've experienced the top two and personally prefer the second one, the shifts are less harsh and the engine RPMs are kept higher and there is less a sense of lugging. The second one will shift quickly to lockup mode with light throttle so not a lot of fuel mileage is lost with a light foot on the throttle if desired.

Now I know more about this than I ever knew I wanted to know. If my explanation is somehow not clear, no big surprise here, please feel free to ask.

Quad slide, rear bath, front entry, Cummins ISX 650 HP, Allison 6 speed transmission.

http://www.newellcoach.com/newell-coaches/coach-1434/

$1,099,000

Just traded in. I will update with a post as soon as Newell gets it on their website.

Quad slide, Bath and a half, 600 HP Cummins ISX, Allison HD4000MH 6 speed transmission. Mid entry. Photos are from 2015 as new ones have not been posted.

   
   
   

I had some black stains on the carpet that Newell puts on the inside of interior cabinets.  Since the stains had been there since I purchased the coach in 2010, I was not optimistic of finding any thing that would remove them.  I tried Folex instant carpet spot remover on the light tan carpet.  All stains now gone.  I followed the directions to soak the area, agitate area with fingertips and blot dry.  I suggest using a white cloth for blotting.

https://www.amazon.com/Folex-Carpet-Spot...B001B0V5GG

PS  I purchased mine at WalMart

This coach looks like it's been ridden hard and not treated very nice. The winning bid is just be the cost of admission...

https://www.ebay.com/itm/Newell-45-foot-...41e13533ec