Jake brake vacuum pump
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Joined: Apr 2007
Posts: 497
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From: Manteca, CA
[QUOTE=DodgeChallenger;3129565]Folks just to clarify this thread.
The brake units use pressure not vacuum so don't go buying a vacuum pump to operate the butterfly type exhaust brake."
The Jacobs exhaust brake uses a vacuum pump and actuator to operate the brake, not air pressure. I switched to a PacBrake which does use an air compressor. I had a BD brake installed on my '98 that used the factory vacuum pump. Both were butterfly type exhaust brakes as is the PacBrake so some exhaust brakes use vacuum and some use air compressors. Best not to make blanket statements without all the facts.
The brake units use pressure not vacuum so don't go buying a vacuum pump to operate the butterfly type exhaust brake."
The Jacobs exhaust brake uses a vacuum pump and actuator to operate the brake, not air pressure. I switched to a PacBrake which does use an air compressor. I had a BD brake installed on my '98 that used the factory vacuum pump. Both were butterfly type exhaust brakes as is the PacBrake so some exhaust brakes use vacuum and some use air compressors. Best not to make blanket statements without all the facts.
Registered User
Joined: May 2002
Posts: 1,425
Likes: 2
From: Melbourne, Florida
Folks just to clarify this thread.
The brake units use pressure not vacuum so don't go buying a vacuum pump to operate the butterfly type exhaust brake.
My PAC valair unit keeps blowing the fuse after about 1/2 hour. Might have to replace it and mount it in the cool air up front somewhere as heat kills electrics.
The brake units use pressure not vacuum so don't go buying a vacuum pump to operate the butterfly type exhaust brake.
My PAC valair unit keeps blowing the fuse after about 1/2 hour. Might have to replace it and mount it in the cool air up front somewhere as heat kills electrics.
Most feel the Pac Brake is a better brake than the Cummins Jake. Only difference is Dodge says if you don't use the Jake, your warranty is voided if you tow heavier than 10,000 lbs. Its also voided if you tow heavier than 10,000 lbs without it.
That does not apply to the 6.7 2007.5 and later.
Dave
With age comes the cage
Joined: Jul 2007
Posts: 2,710
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From: The Gas Patch
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