I am installing a Jake exhaust brake inn my new megacab and am having problems installing a new serpantine belt. I have a diagram show the correct belt routing. Other than just a new pulley above the pump on the left side of the engine compartment there is no difference from the stock belt routing. I am having a problem envisioning where to correctly start the belt. I was working on the truck until about midnight last night and am sure that I was just way to tired to even be seeing straight. Could someone help clarify? Thanks.

 

I guess you know after installing the Jake, it takes a longer belt.

 

Does the Jacobs unit use a mechanical vacuum pump? I thought all the exhaust brakes had an electric pump????

Thanx

 

These serpentine belts are a pain.
Just take your time and if you get frustrated leave it for later.

 

Yes Jacobs uses a vacuum pump run off a (longer) serpentine belt and a vacuum operated piston to actuate the exhaust valve. Others us compressed air to operate the piston and these have small electric compressors, or at least the ones I've heard of.

 

Thanks Cold Case