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Allison Transmission Query

Yahoo Message Number: 98180
Please read my story......

Recently we've been experiencing very sluggish response in first and reverse gears when first setting off. After a short time when the transmission shifts up, all is then OK. I thought I should at least check the oil levels, firstly by using the drivers selector keys and then by looking at the good old dipstick. The key pad revealed 'ol - 7' which I researched to mean low oil level - add seven quarts; but the dipstick showed oil way over the top marks either hot or cold. In each of my frustrating checks either hot or cold, and on level ground, and after following the book and allowing for a short warm-up and selecting forward and reverse to remove any entrapped air the results are still the same. The key pad does also indicate a fault code D11412, but because of the above weird anomalies I frankly don't believe what the keypad is telling me.
I have also noticed when reading the Allison book, that the normal fill-tube location on the side of the stand-alone transmission is replaced in the Inspire motorhome by the extraordinarily long dipstick and guide tube - maybe this is giving rise to reading or display errors. Any help, references or sympathy would be most welcome.

Tony Singleton

(Inspire with Allison 3000MH)

Re: Allison Transmission Query

Reply #1 –
Yahoo Message Number: 98181
Your trans code indicates your keypad level check may not be working. You did not indicate the year of the coach, that may be helpful.
The code indicates the following Not equipped, not functioning, broken wire.
Below is a link to the chart, go look at it a let me know what you think.
http://www.rvtechlibrary.com/transmissions/3000_4000_operators.pdf
Mikee

Re: Allison Transmission Query

Reply #2 –
Yahoo Message Number: 98182
The display may be telling you that the "Sump fluid temperature is too low" ( o,L,--,7,0 is the code for this condition).

NOTE: The fluid level check may be delayed until the following conditions are met:
  • The fluid temperature is above 60°C (140°F) and below 104°C (220°F).
  • The transmission is in N (Neutral).
  • The engine is at idle.

  • The transmission output shaft is stopped.
  • The vehicle has been stationary for approximately two minutes to allow the fluid to settle.
Ernie

2002 Country Coach 36' Allure Cummins ISC 350 Allison 3000