Retarder repair
Original post 11 months ago:
Anyone have their trans temp warning come on, when the trans is below normal temp? Like under 180 degree's. It works fine, gauge and Silverleaf read 185-195 degree's, but then the trans temp light come's on for a few seconds, till you turn off the retarder.It will do it while cruising at 45, when you let off a second, while the coach is cold.
Doesn't seem to do it when trans temp is at 195+. I have seen as high as 225, and it hasn't come on. Engine temp is always about equal to trans temp. I realize the retarder sender is not the same temp where it is located, which could actually be as high has 300 degree's. But I know I am no where near even 250 degree's.
I have checked and cleaned the connection's at the trans. I am thinking bad sender?
Update to issue:
So I bought a $400.00 Allison trouble shooting manual used on Ebay for $22.00 delivered. Isn't Ebay wonderful?
Found where the temp probe is. Didn't have to drain trans oil. It is part of a small harness assembly, was quoted $500.00!
Did some bench testing with different temps in water (had the different ohm readings in the book). Determined it was the probe.
Having the manual, I was able to find a Allison probe only part number, I couldn't find that separate part number anywhere online. Bought a genuine Allison one for $85.00 delivered. Yup, on Ebay. Installed it onto the harness, popped the harness back in, then took her for a drive, problem solved.
If anyone needs part numbers for their MD 3060R, I got it. Just PM me.
Chris
Topic: Retarder repair