Cab lift and spare tire cylinder replacement

[ARYankee]

I'm curious if anyone has replaced their cab lift and spare tire cylinders with electric linear actuators. I'm thinking of deleting the pump system for them. I know they need to be operated frequently or you will have issues. Mine worked fine when I first had the truck but now it acts up. I figure getting 24 VDC linear actuators might be the way to go. Just seeing if anyone may have tried this or thought the samething.

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[Keith Knight]

Electric actuators are longer than hydraulic actuators for the same stroke length. So fitting a longer actuator in the same space would be the first hurdle the second would be strength.

 

[Ronmar]

Strength would be a bigun…

the rod end side of the piston(side used to lift the tire) has ~ 2.36 sq/in of surface area. It takes ~2200PSI to lift the tire, so that is 5,183# of force from the cylinder to lift the tire…

 

[MatthewWBailey]

The cylinders have those spring activated flow checks that get locked up. My spare tire cylinder locked up and I just swapped it out with a standard Magister cylinder with 1-1/2" rod, 2-1/2" bore. Now I'm rerouting the exhaust, so I don't have a spare but it worked well for 2 years. I'd like to fold in a 24v DC hydraulic pump pak to supplement the air unit when the air is zero.

here is the thread on what I did...

Cab and spare hydraulics problems M1078 LMTV

That sounds feasible. I'll try to extract those ball seats this weekend. I wonder how many times that cylinder has seized with the trucks in actual service. IDK, but have sure come across it a lot on the forums. Mine locked up once. Was able to free it, like most people, by repeated up and...

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