Tools needed:
- Metric hex/allen type bit in 2.5mm and 3mm (Amazon Link / Affiliate)
- Metric hex/allen key at least 3″ long in 3mm (Amazon Link / Affiliate)
- Electric screwdriver/drill with bit driver attachment
Mammotion Luba 5000 AWD First Steps
First I cleared all the debris from the bottom of my Mammotion Luba 5000 AWD unit. I used an air compressor blow attachment to do this. A clean underside makes everything easier. Easier to see screws, easier to see screw holes, less junk in the way. Clean it out. You’ll thank yourself later.
Then I started removing the screws. There are lots of screws. When you think you’re finished, check again because there are likely to be more.
There are 3 different types of screws in the mower. Most of them are small machine-type screws in 2.5mm. Every little indention in the mower has a screw in it. Take them all out.
Some of the screws are a more coarse thread with 3mm allen/hex head. All of the machine-threaded screws have blue threadlocker. This is everything I removed. There was one 2.5mm screw hole that was empty, so I should technically have one additional screw in the bunch.
The 3mm screws at the front of the machine have the non-threaded section at the top.
There are two screws at the back of the Mammotion Luba 5000 AWD in the white body area that are easy to overlook. Make sure you get those.
I also removed the four motor screws that keep the motor attached to the assembly. I don’t think it’s required to remove these, but I was replacing the motors anyway, so I removed them.
If you are replacing your motors, pay attention to the shape of the motor mounts to make sure you install correctly. There is a rounded bump on one side and a small dent on the other side.
Mammotion Luba 5000 AWD Removing the Cover
Once you have all the screws out, you can turn the mower over on its wheels and remove the top.
BE CAREFUL. THERE ARE FRAGILE ANTENNA WIRES THAT NEED TO BE REMOVED BY HAND BEFORE FULLY REMOVING THE TOP. Trust me.
The most fragile wires are the two black antenna wires on either side of this black frame (top and bottom in the photo below). These are panel-style antennas and the connectors are very small.
When you slowly lift the lid off the Mammotion Luba 5000 AWD, you must be careful to disconnect the antenna wires from the system board. The black frame is spring loaded, so it puts pressure on the antenna wires. These connectors wiggle to snap on/off the board, but they’re very small and fragile. I ended up replacing my antennas because I broke one of the wires by accident.
Disconnect the antenna wires from these two chips on either side of the system board.
Here is what you see when you start to lift the top off the Mammotion Luba 5000 AWD.
The ribbon cable above needs to be removed by hand. There are clips on both sides. Press them outward gently to release the ribbon cable. If you ever worked on computers with an IDE connector, this will feel familiar.
The other wire that needs to be removed is the gold colored antenna wire that can be disconnected from the board. Gently wiggle it free. It just snaps on/off.
Another view of the system board. There is another system board below this one, but I didn’t want to risk breaking anything to get to it.
More photos of the sytem board. Below, I’m removing one of the motor connectors that attaches to the system board. There is one of these connectors on each side.
My entire reason for pulling the mower apart was to replace the motors, so I disconnected more wires and removed the black frame from the top.
Mammotion Luba 5000 AWD Motor Assembly
The motors connect to the system board with two connectors that snap on/off, along with what I assume to be a small ground wire. The ground wire is a 2.5mm screw to attach the lead. The wires are bundled with zip ties, so I cut those free and replaced them with new zips after replacing the motors.
The motor is labeled as a Linix Brushless DC Motor, 57ZWN24-55-58, at 24V DC, 3.5A 55W running at 5850r/min. My bearings seemed to have gone bad, so I replaced with a new (to me) pair of motors I found on eBay.
Mammotion Luba 5000 AWD Battery
While I was in the mower, I removed the battery unit (4x 3mm hex/allen screws holding it in place) and snapped a pic of the battery specs underneath the battery housing, just in case I or anyone else needs it. Specs for the Mammotion Luba 5000 AWD battery are: Lithium ion type, with 21.6v DC, rated at 9.6Ah / 207.36Wh, with limited charge voltage of 25.2V DC.
Mammotion Luba 5000 AWD Teardown Conclusion and Additional Photos
The partial teardown I performed provided access to many of the serviceable parts (maybe not truly serviceable according to the manufacturer, ha!), including the motor assembly, battery, antenna wires, and system board. I didn’t have a need to go any further into the teardown, but I hope this information is helpful for the Mammotion community.
More photos below.
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