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07-11-2015, 02:05 AM
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#1
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New Member
Join Date: Jul 2015
Posts: 1
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Allison Transmission 545
What's is the time and labor cost for removing and installing a Allison transmission 545 on a school bus
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07-11-2015, 11:01 AM
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#2
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Bus Geek
Join Date: Aug 2011
Location: Stony Plain Alberta Canada
Posts: 2,937
Year: 1992
Coachwork: Bluebird
Chassis: TC2000 FE
Engine: 190hp 5.9 Cummins
Rated Cap: 72
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If all go's well, 3 to 5 hours in a shop.
Nat
__________________
"Don't argue with stupid people. They will just drag you down to their level, and beat you up with experience."
Patently waiting for the apocalypses to level the playing field in this physiological game of life commonly known as Civilization
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07-11-2015, 11:07 AM
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#3
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Bus Geek
Join Date: Mar 2011
Location: Houston, Texas
Posts: 8,462
Year: 1946
Coachwork: Chevrolet/Wayne
Chassis: 1- 1/2 ton
Engine: Cummins 4BT
Rated Cap: 15
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NOTE...anyone looking for a replacement or just parts for an AT 545 can have mine for free. It came out of a P-30 cubie that was running until parted out. Been sitting indoors for the past 3 years. PM if you can use it or it goes for scrap fairly soon.
Located in Houston, TX.
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07-11-2015, 05:22 PM
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#4
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Bus Nut
Join Date: Jun 2014
Location: MB
Posts: 279
Year: 1997
Coachwork: Tomas
Chassis: International
Engine: T444e
Rated Cap: 54
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Quote:
Originally Posted by nat_ster
If all go's well, 3 to 5 hours in a shop.
Nat
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How long lying down in the mud?
I Know a school that has a bus that they will sell me cheap in 2 years.
It has an at545, that will be dead..... I think this is the 3rd one that's been in the bus!
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07-11-2015, 07:45 PM
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#5
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Bus Geek
Join Date: Aug 2011
Location: Stony Plain Alberta Canada
Posts: 2,937
Year: 1992
Coachwork: Bluebird
Chassis: TC2000 FE
Engine: 190hp 5.9 Cummins
Rated Cap: 72
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Quote:
Originally Posted by Hank's P-O-S
How long lying down in the mud?
I Know a school that has a bus that they will sell me cheap in 2 years.
It has an at545, that will be dead..... I think this is the 3rd one that's been in the bus!
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About the same if your organized and have the right tools.
The 545 is basically like a big TH400 chevy trans with a throttle position cable.
Two things can cause those failures. Insufficient cooling, and or bad driving habits. That trans needs 1800 to 2200 RPM to fully lock the bands and prevent slipping.
So a driver feathering the throttle on a gravel road will cook them in no time.
Nat
__________________
"Don't argue with stupid people. They will just drag you down to their level, and beat you up with experience."
Patently waiting for the apocalypses to level the playing field in this physiological game of life commonly known as Civilization
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08-06-2015, 02:45 AM
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#6
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Mini-Skoolie
Join Date: Aug 2015
Location: Calgary, AB
Posts: 67
Year: 97
Coachwork: Moi
Chassis: International
Engine: 444e...7.3L
Rated Cap: 36
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I read that you can use 15w40 instead of tranny fluid. It kicks like a mule but the thicker fluid might be better for the feathery stuff. Hmm interesting. Will an intercooler help with that lightfooted gravel road travel? I plan to do a lot of bush travel
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08-06-2015, 06:44 AM
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#7
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Bus Crazy
Join Date: Apr 2010
Posts: 1,208
Year: 1999
Coachwork: Bluebird
Chassis: 3800 International
Engine: T444E
Rated Cap: 72
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I don't I would use anything but tranny fluid, and yes a tranny cooler would help, most buses have them all ready. I have put over 25000kms on my 545, lots of gravel roads,slow driving, fast driving, and lots of hill 3-6% grades, and never had a problem
I have changed the oil and the spin on filter 2 times, next year I'll drop the pan and change that filter to.
gbstewart
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08-06-2015, 09:27 AM
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#8
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Bus Geek
Join Date: May 2014
Location: West Ohio
Posts: 3,678
Year: 1984
Coachwork: Bluebird
Chassis: International 1753
Engine: 6.9 International
Rated Cap: 65
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I don't know if I'd use 15w40 in any auto trans. The viscosity is WAY too thick at colder temperatures, like 4x's as thick at 40*C, and it's only going to get worse as you near freezing. Plus the additive package is all wrong. Sure, top it off with a quart of 15w40, but as for a complete replacement, don't do it. There's more to an auto transmission fluid then providing pressure to apply the clutches(a lot more actually).
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08-06-2015, 12:08 PM
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#9
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Mini-Skoolie
Join Date: Aug 2015
Location: Calgary, AB
Posts: 67
Year: 97
Coachwork: Moi
Chassis: International
Engine: 444e...7.3L
Rated Cap: 36
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545
Well since I live in Canada...maybe 15w40 isn't that great of an idea. Although I will add on an extra inter cooler...never hurts. I read in the 545 manual that 15w40 is used for heavy duty applications....but I can see winter up here being a HUGE problem...lol
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08-06-2015, 02:11 PM
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#10
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Moderator
Join Date: Feb 2007
Location: NUNYA
Posts: 4,236
Year: 1995
Coachwork: Thomas
Chassis: 3800
Engine: DT408, AT545
Rated Cap: 23 500 gvw
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I have heard of straight 30 weight being used.
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