What occurs as you attempt OD mode?

Dash light comes on and stay on when the OD doesn't work? If it does, the 4th gear switch, wires in the shifter and relay are all OK. For those of you who wonder how I know this from afar, the dash light is wired together with the wire to the solenoid on the OD at the relay socket.

Dash light goes out. Most probable cause is the 4th gear switch on the tranny. Test by pulling the shifter further back and to the right to see if you get dash light. Or if sitting still, with dash light on, wiggle shifter to see if light goes out. Ignition on, engine off, in 4th gear allows all potential electrical connections necessary for OD mode with out speeding down the road doing testing.

Since this only seems to occur as you push the button and the OD does not drop out on its own, the connections at the solenoid may be tight but maybe not clean enough to allow free movement of electrons. ALso check ground wire.

As for your original question. You have done it once except the unit you had was internally damaged beyond repair using what was there.

The biggest problem you will face since this OD works sometimes is getting it back on. Remember how the pistons are inserted, with the trough toward the bars so you can grab the bump in the middle and pull them out, and get the bars down tight you will be fine. Watch the pump parts if you take that plug off, which if you have had problems with reassembly before I suggest just leave the pump system alone.

This also applies to a used unit from a salvage yard. The largest amount of effort in "rebuilding" an OD is getting it off the tranny. If your OD does not make noise, a reseal kit is all that is necessary.

Duane