Gen 2 Raptor Vacuum System

[brfails]

I don’t see where you have checked the hub itself.

Would the hub itself affect the vacuum? Or would it just affect the actuator’s ability to mesh when released?

 

[New recaros]

If its leaking it sure will

 

[New recaros]

I posted in another IWE thread the proper vacuum strategy.

Short version.

Above 32, hubs stay engaged (no vacuum) for 1/2 mile after start

Below 32, it is 1 or 2 miles. This is to warm up the front differential.

What, you say ford designed it so the hubs stay engaged? Not sure I buy this one

 

[mobilefordtechjosh]

The Hubs holding vacuum disengages the shaft ends when you loose vacuum it will engage the ends. Make sure your testing the correct position on the IWE and when applying vacuum see if it stays steady and also on jack stands spin the wheel while it’s holding Vacuum see if it changes.

 

[FordTechOne]

What, you say ford designed it so the hubs stay engaged? Not sure I buy this one

The strategy he posted is correct; the hubs remain engaged on startup to allow vacuum to build and to warm up the differential fluid.

 

[New recaros]

So the truck opens a solenoid valve after a certain distance. Well how do you test it? Your in a shop, going nowhere and could not disengage or spin the wheel.

 

[isis]

So the truck opens a solenoid valve after a certain distance. Well how do you test it? Your in a shop, going nowhere and could not disengage or spin the wheel.

If you’re in a shop I hope the temperature is above 32F.

 

[New recaros]

If you’re in a shop I hope the temperature is above 32F.

You still have a half mile to travel at above 32F according to the strategy

 

[isis]

You still have a half mile to travel at above 32F according to the strategy

Drive it around the block before pulling it into the shop?

 

[New recaros]

You just don’t get it. You shut the truck off and doing anything, then you need another half mile. Know wonder all/most techs are air heads, they leave the truck running after driving it around the block. Ford is gassing our tech’s