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Open Roads Forum  >  Class A Motorhomes  >  Maintenance Issues & Tips

 > Unsuccessfully trying to upgrade my exhaust brake

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shoalsgary

northwest Alabama

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Posted: 02/12/20 08:04am Link  |  Quote  |  Print  |  Notify Moderator

I have a 2003 Holiday Rambler Endeavor with Cummins CAPS engine and my exhaust brake is frozen. I've tried soaking in diesel fuel, soaking in PB Blaster, using Bigger Hammer, heat, and NOTHING frees it up. So I want to upgrade to the PPRXRB brake. But every supplier wants the model number of my brake. The only number on my pump is C319 cast into it, but that doesn't satisfy them. Where can I find the model number of my original brake???

wolfe10

Texas

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Posted: 02/12/20 08:22am Link  |  Quote  |  Print  |  Notify Moderator

Have you contacted PacBrake: https://pacbrake.com/contact-pacbrake/

Have your engine serial number handy.


Brett Wolfe
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shoalsgary

northwest Alabama

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Posted: 02/12/20 09:20am Link  |  Quote  |  Print  |  Notify Moderator

can't find engine serial number

MrWizard

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Posted: 02/12/20 10:31am Link  |  Quote  |  Print  |  Notify Moderator

I the Cummins i had
The engine serial # was on a metal tag
Irrc it was near the injection pump


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ScottG

Bothell Wa.

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Posted: 02/12/20 11:03am Link  |  Quote  |  Print  |  Notify Moderator

I think you'll find the S/N tag mounted sideways on the timing cover, kind of behind the inj. pump.
You can use this number to contact Cummins and they can tell you every part that's associated with your eng.


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schlep1967

Harrisburg, PA

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Posted: 02/12/20 12:05pm Link  |  Quote  |  Print  |  Notify Moderator

Is it frozen because of carbon build-up? Or is it a mechanical issue? If it is carbon build-up try soaking it in Purple Power overnight. $8 a gallon at our local Autozone. Works great for cleaning all things EGR related.


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shoalsgary

northwest Alabama

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Posted: 02/12/20 12:20pm Link  |  Quote  |  Print  |  Notify Moderator

schlep1967 wrote:

Is it frozen because of carbon build-up? Or is it a mechanical issue? If it is carbon build-up try soaking it in Purple Power overnight. $8 a gallon at our local Autozone. Works great for cleaning all things EGR related.


nO CARBON BUILD UP. PROBABLY FROZEN FROM NON-USE.

shoalsgary

northwest Alabama

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Posted: 02/13/20 06:12am Link  |  Quote  |  Print  |  Notify Moderator

Now I'm trying to find the PXRB that replaces it. I provided my engine number (46248452) and have found nothing on the exhaust brake, original OR PXRB.

wolfe10

Texas

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Posted: 02/13/20 07:10am Link  |  Quote  |  Print  |  Notify Moderator

shoalsgary wrote:

Now I'm trying to find the PXRB that replaces it. I provided my engine number (46248452) and have found nothing on the exhaust brake, original OR PXRB.


You talked with PacBrake Corp?

keefr

Edmonton

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Posted: 02/13/20 09:51am Link  |  Quote  |  Print  |  Notify Moderator

Is it possible that your original was made by Jacobs (the Jake people)? They supplied exhaust brakes for some engines of that vintage. I agree with Brett Wolfe, you should be contacting PacBrake directly - they will be able to tell you what part you need better than any dealer or reseller. I have found them to be incredibly helpful.


Never argue with an idiot - they drag you down to their level and beat you with experience. - George Carlin

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