Leaderboard

As requested by MoparMan this is an article detailing the electric vacuum pump conversion: Since I’ve deleted my oem vacuum & power steering pump(s) and gone to a midrange setup for steering assist I still need vacuum to activate the hvac controls and my exhaust brake. Trucks with vacuum controlled cruise should work but this modification applies to just my setup. My cruise is ecm controlled and I have the non cad front axle so my vacuum demand is limited. On SD applications they use it lock the front hubs & hvac on their trucks so I feel it should work on any of our vehicles. I used the same pump from the SuperDuty and 3rd gen Rams (same pump). I picked it up from Rockauto with a mating connector. I drilled 3 holes and mounted it an easy to service spot on the fuse box cover. Plumbing wise it goes to a control manifold for the EB and tees off into the oem vacuum line on the firewall. I don’t use a reservoir like Ford but you could run one if you desire it. Power wise it gets fused voltage from the PDC power stud which also is the relay supply power (pin 30). The relay trigger is controlled by a fuse tap in one of the pdc fuses that is hot with key on (so it doesn’t run all the time). The pump has an internal governor so when it reaches its vacuum threshold it shuts off. If it’s always running then you most likely have a leak you need to repair first. View full Cummins article

Absolutely

Basically, the pump section pulls out of the reservoir, and there is a large o-ring. As for the pump vanes, I've never opened up. Rest is just o-rings. Be sure you can get the o-rings first before opening. I would check with Blue Top Steering for pump and steering box supplies. https://bluetopsteeringgears-com.3dcartstores.com/

How are you checking voltage for the lift pump? Where are your test leads connected? Ignition key on - lift pump runs for 1/4 second Bump start, leave ignition key on - lift pump runs for approximately 20 seconds The ignition key must be turned off between bump start tests. John

cab off to blasting today!