Are you sure about the 3040 because most motor homes of that age have the 3060. That is just the 3000 series with 6 forward speeds. I think at that age Allison had put in the electronic system where you can check the fluid level and check for codes from the shift pad.
With the engine/transmission warm, level and in neutral:
1. Press both up & down arrows simultaneously and release. The display on the shift pad will start a count down starting at 7 or 8. When it finishes it will display: O - L -O - K, for oil level ok. Or O - L - L- 1, for oil level 1 qt low. It can report put to 4-5 low or high.
2. Same start position as above: Press up/down arrows and release as before, then press and release a second time. this will display any codes in tHe display window. You can look up the codes on the Allison site, and exactly how to read them.
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Steve Ownby
Full time since 2007
2003 Monaco Signature
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