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Old 06-17-2022, 05:59 PM   #29
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Glad you got it figured out.

Did you check the level with the shift pad, this is the preferred way.
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Old 06-17-2022, 06:13 PM   #30
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Information for anyone with an Allison transmission.


Copy down the model and serial number from the metal tag on the driver's side of the transmission (at least on the 3000 and 4000 series) and call Allison for the correct change quantity. No need to measure, guess, etc


Allison help line 800 252 5283
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Old 06-17-2022, 06:21 PM   #31
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Originally Posted by wolfe10 View Post
Information for anyone with an Allison transmission.


Copy down the model and serial number from the metal tag on the driver's side of the transmission (at least on the 3000 and 4000 series) and call Allison for the correct change quantity. No need to measure, guess, etc


Allison help line 800 252 5283
Tried that. Got no help. They said you need to call or goto your local Allison dealer.
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Old 06-17-2022, 06:22 PM   #32
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Originally Posted by jacwjames View Post
Glad you got it figured out.

Did you check the level with the shift pad, this is the preferred way.
Yep, verified with keypad. Which is very hard to do. It won’t run the diagnostics until trans temp is >170. Which mind never, ever, hits. Unless it’s 100 degrees outside and I’m going up a hill…
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Old 06-17-2022, 06:58 PM   #33
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Fluid level makes no sense…

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Originally Posted by bpu699 View Post
…..Looked at the dipstick, motor off and sitting 1/2 an hour. Parked in slight decline, front nose down about 5 degrees.



Oil on the dipstick is 4 inches over the high mark! Now, I know you’re supposed to check with the motor running at idle, but would that explain it running 4 inches high?!


Yes.
Reading any automatic transmission dipstick while not running is a waste of time. When running the front pump is circulating fluid, and keeping the torque converter full. When not running, the torque converter is partially emptying into the pan, and not a reliable level. Thus the need to only check while running.
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Old 06-17-2022, 07:07 PM   #34
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.



Prior owner at one point got towed because tranny was shifting funny… reportedly 14 quarts low on oil?!



You knew this when you bought it? Lucky the trans isn’t toast.
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Old 06-17-2022, 07:28 PM   #35
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Yep, verified with keypad. Which is very hard to do. It won’t run the diagnostics until trans temp is >170. Which mind never, ever, hits. Unless it’s 100 degrees outside and I’m going up a hill…
Hmmm, sure your fan is not stuck running at hi-speed?

I have no problems see'ing 190F trans temp on cool weather, and no grades.
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Old 06-18-2022, 06:14 AM   #36
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You knew this when you bought it? Lucky the trans isn’t toast.
Went looked at the old records in more detail, it was 6-7 quarts low, not 14.

He had just had it serviced, after a drive shaft issue. My guess is that whoever did it read the same Allison websites I was finding, suggesting it takes about 11 quarts.

The PO drove it a very short distance, then got the correct amount of fluid. No issues 10,000+ miles later…
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Old 06-18-2022, 06:19 AM   #37
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Hmmm, sure your fan is not stuck running at hi-speed?

I have no problems see'ing 190F trans temp on cool weather, and no grades.
Yep… it is. The PO had some kind of direct drive adapter installed. Radiator Fan is on at all times.

He drove a lot in the mountains, towing a big boat.

Driving along motor at 180 degrees at baseline, up to 191 in mountains on a 100 degree day.

Trans usually runs 160-165…

Off course running the fan all the time probably hurts mileage a bit (I still get 9.5 mpg in mountain/city/highway combined driving).

Motor does reach operating temp, no issues.

Nice thing is, never runs hot in the mountains, as fan doesn’t need to play “catch up.”
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