Do I have to go with the Jacobs Vacuum pump or can I go with an aftermarket option?

[HGreen]

Did you ever consider an Electric Vacuum Pump? I have an Airstream Trailer that had vaccum assisted disk brakes (yes I switched them out for electric - parts availability issues). When I got my first diesel, an 85 Suburban, it had minimal vacuum. I got an electric vacuum pump out of a early 80's 4 cyclinder GM car and added a PVC tank under the Suburban and the pump under the hood. Always had plenty of vacuum after that.

 

[gtobey]

gtobey, any reason you can't post the info here?[/QUOTE



OK, I will tread lightly, trying not to step on anyone's toes, as I don't want to be accused of selling something here... I hope you all will accept this as information that may be of help only, and not as a promotion in any way! You can check with your local Delphi source, and if you can't find one, I will help you locate your closest distributor, and they should be able to source it for you.



Here's the latest info I have received:



1. Introduction

Dodge truck applications incorporating a Diesel exhaust brake kit utilize a diaphragm style vacuum pump (MOPAR part number 05102084AA) similar to those fitted to Ford trucks.



2. Until now the service procedure for a failed vacuum pump was by complete unit replacement. We have confirmed that the Pod used on these units is the same as POD4342 (Delphi Part Number), which is in our current range. A Pod change is a great alternative to the costly replacement of the complete unit.



3. Fitment

Before fitting a new Pod proceed as follows:

• Confirm the frame is in good condition.

• Check to see if the drive can be rotated easily (without the Pod installed) and is free of dirt and contamination.

• Check the condition of the Pod push rod. A worn push rod could indicate a damaged cam. Visually inspect the cam lobe.

• Check the lubrication level in the frame. It should contain approximately 8-12 cubic centimeters of 80-90W gear lube.

• Install the new Pod with the 4 bolts previously removed during inspection. Torque the bolts to 10-14 NM and reinstall assembly to vehicle.

• Reference the vehicle service manual for installation questions.



That's all we have gotten to date, as I haven't seen one nor a picture of one. Delphi is really good to provide us with accurate information.



Hope this has been helpful and pertains to what you've been looking for... .

 

[AWay]

Cummins part # is 3965925

I got lucky and got the salesman to give me all the manuals that was shipped with my Jake brake after they installed it. The parts manual says Mopar on the front and Cummins Engine Co on the back. Shows Mopar P/N and Cummins P/N for everything. It confirms the above P/N for the Vacuum Pump.



Anybody wants a copy of the parts manual, private message me and I'll give you my address to send a SASE to for it. You know those 39 cents adds up for us retirees.

 

[gtobey]

Glad we're talking about the same one...

 

[GWBourne]

I don't have an exhaust brake on my '06 truck, but we just got word from Delphi today that the POD is available for replacement so you won't have to replace the entire unit. They even provide instructions to check out the drive unit so that you can tell if it is good or bad. The POD is less than $100! PM me or email me and I'll let you know about the information I got! Hope it will help.



Here's the instructions for checking out the drive unit:



Before fitting a new Vacuum Pod:



• Confirm the frame is in good condition.

• Check to see if the drive can be rotated easily (without the Pod installed) and is free of dirt

and contamination.

• Check the condition of the Pod push rod. A worn push rod could indicate a damaged cam.

Visually inspect the cam lobe.

• Check the lubrication level in the frame. It should contain approximately 8-12 cubic centimeters of 80-90W gear lube.

• Install the new Pod with the 4 bolts previously removed during inspection. Torque the bolts to 10-14 NM and reinstall assembly to vehicle.

the part number i quoted earlier IS for the entire vacume pump, pully and bracket included. im going to look into removing the pod and replacing it as you speak be dismantling the old one while still in the truck. if i can make it work that way then i will.



the price here in san diego was 88. 06 plus some shipping fees so... me being paranoid and going on a 2600 mile trip with everything i own, i bought two. that guy justin case visits me on a regular basis.



Grant

 

[abrankod]

I was waiting till I got my new truck to confirm my suspicions about the vacuum pump on the jacobs brake system...



This pump is a commonly used vacuum pump on all the light duty diesel applications. Ford(used for the 7. 3l and 6. 0l brake boosters), GM(used on the 6. 5l td for boost control actuator) and obviously Mopar use the same exact pump. The pumps are available (sans pulley which has to be pulled off the old one and pressed onto the new one), at autozone for about $125 (part number 64-1025) and at many other dealers. In fact a local supplier has them for about $95 new complete. I'm perplexed as to why on earth the dodge dealers and even cummins are marking this pump up so high... strange.



Anyway, good luck to anyone who needs a new one. Try autozone or your local parts dealer and just ask for a vacuum pump for a 99 gmc suburban with the 6. 5l turbodiesel...





-Daniel

 

[jelag]

We now have an electric vacuum pump in stock for those of you who have had failure of your stock pump and don't wish to spend the $$ for a replacement... . If you specific questions please e-mail me... . I'm sitting in a motel right now on the road so I don't know the specific value... . but we brought it in for this reason.....



Hope this helps... .

 

[Posm]

Well I lost another pump today. That makes 3. 67K on first one, 65 on the second and 41K on this one.



Has anyone been able to source the Pod as a replacement? If not has anyone replaced the whole pump from autozone? I need to get mine going ASAP.



Bryan

 

[Posm]

Confirmed, the pump from the 99 suburban will repair the overpriced pump on the jake exhaust brake.



The part number for CarQuest and for AutoZone is 64-1025. The pump itself has a slghtly different shaft to mount length. I removed the pod from the new pump and replace the pod on the old pump. I was very careful not to spill the oil on the old pump drive. I suppose you could change the oil, but they do not work hard enough or last long enough to worry about IMHO. I torqued them according to the gtobey post above and replaced it. The only problem I could see is the direction the outlet points. This makes the hose connection somewhat difficult, but it is workable. You may be able to bend or twist the outlet, but I did not want to risk damaging the diaphram housing.



You may be able to use the complete pump if you install the pulley with the dish facing away from the pump instead of toward it, but this would change the leverage distance from the bearing to the belt load.



The hardest part of this project is removing the belt. I avoided this by using a long 1/2 inch rachet (torque wrench) and a bunge strap and tied the tensioner back using the fog light/bumper bracket. This probably saved 15 or 20 minutes of rerouting of the belt.

 

[Forrest Nearing]

I didn't realize 3rd gens didn't have vac pumps... how do they actuate the blend door on the AC?

 

[Hercules130]

I didn't realize 3rd gens didn't have vac pumps... how do they actuate the blend door on the AC?

The 03 and 04's had vacuum pumps for the cruise. Do a search on failed blend door actuators.

 

[DieselFite]

My 6. 5 diesel buddy saw the vaccum pump on mine and said to me that it was the say vaccum pump they use on the 6. 5 chevy diesel and you could pick one of them up for uder $200. You guys might wanna check this out.

 

[nickleinonen]

I didn't realize 3rd gens didn't have vac pumps... how do they actuate the blend door on the AC?

electric motor actuators

 

[HBarlow]

My new '06 with Jake Brake already has 72k miles on it. Driving recently I was remembering this post and wondering if and when my vacuum pump will fail. I did a search and found this post and copied all of the information to carry in my glove box.



To each of you who has contributed information and tips to this post I offer a sincer THANK YOU. A post like this is what makes the TDR incredibly valuable to any Dodge-Cummins owner.



Thanks to the determination and ingenuity of each of you who found all of this information I can now source a replacement pump from a Dodge dealer, a Cummins dealer, or any Autozone or Carquest store (in descending price order) in America. That's great!



Harvey

 

[MChessick]

Replaced Vacuum Pump

Just replaced mine about 4 weeks ago on my 03 Dually. Dealer wanted $695. 00 or $750. 00 depending on the dealer. I live in the Northeast and bought a new unit complete from Cummins for $83. 10. I am good for another 130K. It took 15 minutes to change out and the Cummins dealer was going to stock a few. Good luck.



Mark