Re: 47 Overdrive

Posted by HH56 On 2018/2/5 23:40:00

To have OD operation you need the knob all the way in to move the lever on the OD case so the gears can engage. It also closes a switch at the end of the knob bracket so the governor can energize the relay when it reaches 0D speed of around 20mph. Knob out opens the switch and keeps the relay from coming in plus locks the overdrive gears mechanically into a solid unit just like it wasn't there.

To check the cable operation look at the lever on the passenger side for an R9 and the drivers side for an R11. When it is locked out the lever will be pulled forward almost to its stop. When knob is in and OD is possible the lever will be pushed toward the rear with the end of the lever well past center.

If the knob is pushed in and OD doesn't work it could be an electrical or mechanical problem but it could also be the cable housing has pushed out of the bracket under the dash instead of moving the lever.