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This vehicle will be towed 4 down. To do this safely without damaging the transmission or transfer case, the rear driveshaft has been disconnected.
The next step is to install a supplementary vacuum pump, reservoir and manual control valves so that the vacuum actuated warn hubs can be forced to remain disengaged by maintaining vacuum on the IWE while the vehicle is towed 4 down and then easily returned to OE status at the end of the tow.
It will simplify my task if I don't have to search out the main vacuum control switch or switches for the IWE.
Enough information or too much?
I answered this question 10 minutes ago.
Do we restart the dialogue?
That is a helpful answer. Is it possible to get the vacuum diagram as well?
I have the two volume Ford Workshop Manual for this vehicle but I can't find a vacuum diagram anywhere in the manual. Do I need a separate manual for such information?
Can you clarify one of the sentences in your response? You wrote " When the engine is running you will vacuum and one of the ports." I think you are saying ...'you will have vacuum at one of the ports....' yes?
Are you still working this issue or have you moved on to another?
Especially for following up.
I look forward to your input.