Failed Jacobs exhaust brake

[SVWindwalker]

My exhaust brake failed yesterday. Today it worked briefly then quit. Lots of clattering. I assume that the vacuum pump has failed. What else could it be?
I ordered a vacuum pump from Geno's, due wednesday 11/18. Next question can I drive the truck until the pump comes in? What other parts should I put in?
Your help is appreciated.

Terry

2006 Laramie, 200,00 hard miles

 

[SnoKing]

Vacuum test gauge would tell you if this is the issue. Snoking

 

[Ozymandias]

And NEVER let the Pump run with an open suction line, the diaphragm will be destroyed immediately.

 

[ScottLewis]

If the pump is making unusual noise, I wouldn't drive it without bypassing the pump belt. If the pump locks up, it cam break the belt and may send it into your radiator. Very costly.

 

[SVWindwalker]

Ok so what pressure am I looking for? Do I unhook the vacuum hose where it comes out of the pump!

 

[SVWindwalker]

What size would the bypass belt be?

 

[SnoKing]

Ok so what pressure am I looking for? Do I unhook the vacuum hose where it comes out of the pump!

Vacuum should be the same across the system. I hooked mine up at a T on the fire wall on my 2001. Chris

 

[mwilson]

Bypass Belt is the standard Belt for the truck. I have a post on here somewhere about that, I'll see if I can find it.

 

[mwilson]

Here is the routing. Now I'll look for the part numbers,..

https://www.turbodieselregister.com/threads/252170-Belt-Routing?highlight=belt+routing

 

[WalterJ]

If the pump is making unusual noise, I wouldn't drive it without bypassing the pump belt. If the pump locks up, it cam break the belt and may send it into your radiator. Very costly.

Same problem here. Installed Banks EB in 2007. 2nd replacement pmp failed now. Sounds like a wash machine full of scrap iron!! To the point - It cannot be bypassed because it replaces the OEM idler. I never thought to ask for my orig idler assy. for emergencies. I'm now on the hunt for a DC driven vacuum pmp. Wish me luck.

 

[mwilson]

I see you have a banks. Mine is the Jacobs brand. I would still think it would mount in the same spot...

 

[Blu-meanie]

The Jacob's pump doesn't replace anything. The stock belt still works until the replacement comes.

 

[Ozymandias]

And the new pumps are pretty reliable, so install a new one and be happy.