Ace...location of leveling jack hydraulic pump

[Rvman12]

See photos of my battery bay and what seems to lie behind the the batteries.

I was looking today for the Lippert leveling jack hydraulic pump and not sure I found it.

Any ideas? I checked other bays and found nothing like the photo in lippert manual page 2.

[Rvman12]

I spoke with Lippert. They said if the slides and jacks extend.. which they do...there has to be a pump in the RV.

The rep said she saw hydraulic lines behind the battery but no pump.

I sent an inquiry to Thor but being Friday they are shut down now.

Any thoughts where I should look? I checks all bays and saw no pump.

[Bill Johnson]

Mine is right next to the battery. Have someone run the jacks and put your ear by each open door and listen for the pump running

[16ACE27]

Since the hydraulic pump/motor pulls a lot of current it is generally very close to the house batteries, many times in the battery bay.

But since yours is not in the battery bay I would trace your positive terminal cables to find the 100 Amp DC breaker. On the other side of the breaker follow the cable(s): one goes to the generator starter solenoid; the other goes to the hydraulic pump solenoid. You may need to get on a mechanics' creeper to crawl under the MH. It should be in an accessible location because the pump does have a reservoir on it which needs the level checked periodically.

[Bill Johnson]

Follow the hydraulic lines back to the pump if everything else fails

[Rvman12]

Right above the batteries are the 50amp and 100amp cb's.

[16ACE27]

Originally Posted by Rvman12

Right above the batteries are the 50amp and 100amp cb's.

OK, follow the cable.....

[Rvman12]

Tried to follow the wires. Nothing. Listened as both slides went in and out. Nothing. MYSTIFIED.

[16ACE27]

Originally Posted by Rvman12

Tried to follow the wires. Nothing. Listened as both slides went in and out. Nothing. MYSTIFIED.

Slides don't use the hydraulic pump. It's for the leveling system.

[Rvman12]

Tried that and couldn't hear anything with engine noise.

Looked all the way under the coach and saw no pump hanging anywhere.

The controller is above the driver seat in a compartment.

Even looked under panels and sofa and bed and entry steps.

Wondering if these jacks are all electric..

Specs on Thor site offered no guidance

[Bill Johnson]

If you go on the Thor owners resource page and sign up. It will give you wiring diagrams plumbing and just about everything else that is on your motorhome.https://www.thormotorcoach.com/owners

[Rvman12]

Did that Bill....found nothing showing where a pump would be located.

[Bill Johnson]

Did you go under and look at one of the jacks and follow the hydraulic line back to the pump or compartment. My closest one would be the passenger rear, the compartment is about 3 feet away. This is what mine looks like.

[Rvman12]

Yes I looked at all 4 jacks and checked every bay.....nothing leading me to the pump.

[Bill Johnson]

Each one of those lines on top goes to a jack. Mine shows this

[16ACE27]

Originally Posted by Rvman12

Tried that and couldn't hear anything with engine noise.

Looked all the way under the coach and saw no pump hanging anywhere.

The controller is above the driver seat in a compartment.

Even looked under panels and sofa and bed and entry steps.

Wondering if these jacks are all electric..

Specs on Thor site offered no guidance

If you got underneath and looked at the jacks you should either see two hydraulic hoses going to each jack or a heavy electric cable and some control wires going to each jack.

[Bill Johnson]

I might be wrong but it says jack pump upper left

[Rvman12]

The last image does have reference to jack pump....but not found in the battery bay.

[Rvman12]

I looked at Thor videos of the 2023 ACE 29D and 30C models and noticed they also did not have the pump in the battery bay like Bill Johnsons.

[Bill Johnson]

That 100 amp breaker shows one lead go to the generator and the other goes to the pump, might need to follow in the compartment and then crawl under and follow it to the pump