6V92TAC DDEC II sensors

[Bill Gerrie]

You are right about the diode on the relay. When the coil collapses it can cause a surge. If you are going to make your own TRS tool I can measure mine for you.

[luvrbus]

Even the buffer switches for the mechanical engines have the diode. With 1 relay is your Jakes 1 or 2 stages?

[Iceni John]

Even the buffer switches for the mechanical engines have the diode. With 1 relay is your Jakes 1 or 2 stages?

I had it working as a two-stage Jake, but the first stage (one bank only) does tiddly-squat with a 6V92, so it's a single-stage now.   The relay is triggered when the ECM makes a ground connection when it decides that Jakes could be used (i.e. engine at no-fuel, above idle RPM), then it provides power to the Jake switch.   The only downside is that the relay is being activated even when I don't actually switch on the Jakes, but so far it's not failed, and if it did fail it's easy to put in a new relay.   I also installed an emergency Jake switch that sends power to the Jakes directly, bypassing the ECM/relay/Jake switch, so if the relay failed while descending a long steep grade I could still put the Jakes on.

John

[Iceni John]

You are right about the diode on the relay. When the coil collapses it can cause a surge. If you are going to make your own TRS tool I can measure mine for you.

Yes, that would be great if you could measure the shaft diameter, and the width and depth of the end cut.   Thanks so much!

John

[Bill Gerrie]

John
We are out all day today but I will do it tomorrow.

[luvrbus]

I had it working as a two-stage Jake, but the first stage (one bank only) does tiddly-squat with a 6V92, so it's a single-stage now.   The relay is triggered when the ECM makes a ground connection when it decides that Jakes could be used (i.e. engine at no-fuel, above idle RPM), then it provides power to the Jake switch.   The only downside is that the relay is being activated even when I don't actually switch on the Jakes, but so far it's not failed, and if it did fail it's easy to put in a new relay.   I also installed an emergency Jake switch that sends power to the Jakes directly, bypassing the ECM/relay/Jake switch, so if the relay failed while descending a long steep grade I could still put the Jakes on.

John

I just hook the Jakes up direct no relays and let the driver control the Jakes when the controller goes bad.2 strokes don't have enough oil pressure at idle to keep the Jakes engaged so it is not a problem when stopped at a light, if left on the engine will stubble on takeoff and the driver knows his Jake switch is on. You are right 2 stage Jakes are not much on a 2 stroke engine

[Iceni John]

John
We are out all day today but I will do it tomorrow.

OK, many thanks.

[Bill Gerrie]

Here is the dimensions for the tool.

[Iceni John]

Here is the dimensions for the tool.

Perfect!   Thank you so much for that drawing.   I think I even have a short piece of 9/16" 6061 rod that I can use for it.

John

[Bill Gerrie]

John
If I had known what the tool was before I bought it I would have made my own. I am sure a grinder and a piece of scrap rod you will have no problem making it.