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You can replace the vacuum actuators with cables, but why bother? It's a very simple vacuum system. As long as the few hoses are in good shape and in place, it will work.
I took my switches (4WD too) apart, lapped them on a plate of glass for a uniform surface, re-assembled with a little grease. Not worried about a leak from there anymore.
1984 GW
360
Comp 260H
Harland Sharp Roller Rockers
Wiseco -21cc Forged Pistons
Performer Intake
Holley SA 670
MSD 8523
Dakota Digital custom cluster
Serehill headlamp harness
NWMP aux tank
The vacuum switching from the push buttons has some mechanical sophistication. Kinda neat how it works, if you take the controls out and look. Converting that to cable would not be straightforward. Thru '75, the CJs use a panel hanging under the dash, with cable controls. Utility Trucks/Wagons too. AFAIK there is no aftermarket source for thes, so you'd need to fab or scrounge to get one. The cable controls for the '76-up CJ are avaiable from the aftermarket, but these Jeeps embed the cables in big flat dash, and there is no panel per se.
Tim Reese
Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS, hubcaps.
Browless and proud: '82 J20 360/T18/NP208/3.73, Destination ATs, 7600 GVWR
Copper Polly: '75 CJ-6, 304/T15, PS, BFG KM2s, soft top
GTI without the badges: '95 VW Golf Sport 2000cc 2D
ECO Green: '15 FCA Jeep Cherokee KL Trailhawk
I tend to agree with most. The Vacuum under the dash is basic and pretty stinkin reliable. If it aint broke don't fix it. BUT, like Wiley-Moe said, if it is broke, you could fix it that way. Then again, all the vacuum parts (motors, switches, and lines) are pretty cheap and easy to replace.
I've been curious about this kind of thing on mine too. Mostly because thinking about the EV conversion; it would be the one thing that would need any vacuum, so if I could eliminate the vacuum setup, then I wouldn't have to run a vacuum pump, so one less thing to draw power.
'Course, in my case, the EV conversion may mean that I completely redo the HVac system anyway. The motor I've been looking at is water cooled though, and you can use the tiny radiator for it as a heater core...
"The engineering side of me says that it's more than strong enough. The redneck side of me says that it's going to fall apart and I need to beef it up."--somebody I know
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