'Mater - '77 Cherokee S 4-door

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bigwalton
Posts: 156
Joined: Fri Dec 21, 2012 10:33 am
Location: MI

Re: 'Mater - '77 Cherokee S 4-door

Postby bigwalton » Tue Sep 01, 2015 2:24 pm

I know there's probably a handful of threads on tailgate window fixes and the safety switch bypass on here or the other FSJ site. I may have actually done a thread on the other site when I did mine way back when. Can't remember. Search on "FSJ tailgate safety switch" online in general and you're sure to find it.

The switch cut power to the motor when the tailgate isn't closed, it's up near the latch on the drivers side IIRC, been a long time now. Reason for the switch is that the glass is heavy enough that it can break off if opened when gate is down, so if you bypass it, you just have to be safe ;) Once the switch goes, you can't get any power to the motor at all and the window is down or up until you fix it. Everyone assumes a bad motor (and it could be.)

If your glass is down (suck!) disconnect the lift mechanism from the glass through the access hole (have new clips ready, old ones may never work again), put the gate up enough to grab the glass without it being too horizontal (have help), take the glass out very carefully and set aside, then work on the guts. Fix everything electrically, lube everything including the guides on the sides, and reinstall the glass with the switch bypassed (if that's the issue). Replacing the rubber wipe can do wonders too, if it's all hard and brittle and still touching the glass, it can make it hard to go up and down.

Pull and test the safety switch. If it's bad, you're probably near done. Bypass it and move to cleaning/lubricating. If you find a bad motor (I jump power to it directly to test it by itself), you can just put the tailgate back together until you get a replacement, if the glass was down, it's no different. With no action from either the dash or key switch, it's almost certainly either the motor or switch or the wiring between the two. Doubt both switches are bad, but it's easy to test with an ohmmeter.

I'm coming into an insane time for work and travel through the end of the year, but might be able to help sometime...
'77 Cherokee S 4-door
'84 Alaskan Postal Scrambler
'05 LJ Unlimited
'08 JK Unlimited

74cherokees1980
Posts: 50
Joined: Wed Jan 01, 2014 8:39 pm
Location: Ypsilanti, MI
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Re: 'Mater - '77 Cherokee S 4-door

Postby 74cherokees1980 » Tue Sep 01, 2015 2:40 pm

I'd love your help with it. I am at a busy time with two jobs right now but spring and summer I have a lot of downtime so it's not a huge priority at the moment. All I know is by late spring or early summer I'm gonna need to do something with it or I'm gonna lose my mind not driving my rig around and showing it off to people. So if interested at some point next spring just let me know. Otherwise I'll take your advice that you gave me and try it with another jeep buddy I have.


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74cherokees1980
Posts: 50
Joined: Wed Jan 01, 2014 8:39 pm
Location: Ypsilanti, MI
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Re: 'Mater - '77 Cherokee S 4-door

Postby 74cherokees1980 » Tue Sep 01, 2015 2:42 pm

Thanks again bigwalton and I hope we can cruise sometime together. Also any jeep clubs in the area?


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bigwalton
Posts: 156
Joined: Fri Dec 21, 2012 10:33 am
Location: MI

Re: 'Mater - '77 Cherokee S 4-door

Postby bigwalton » Wed Sep 02, 2015 5:58 am

I couldn't make it that long without being able to drive anywhere and everywhere :shock:

It shouldn't take you but a half an hour or so to get the rear glass out and it's possible another half hour could find/bypass the switch. You don't need me, dig on in! At worst you store the glass out of the gate instead of in it and it's sitting there ready for you to get into whenever you have a few minutes.
'77 Cherokee S 4-door
'84 Alaskan Postal Scrambler
'05 LJ Unlimited
'08 JK Unlimited

74cherokees1980
Posts: 50
Joined: Wed Jan 01, 2014 8:39 pm
Location: Ypsilanti, MI
Contact:

Re: 'Mater - '77 Cherokee S 4-door

Postby 74cherokees1980 » Wed Sep 02, 2015 4:01 pm

It's cool. I appreciate the advice and help you have given me. I'll see what I can do even though I've never soldered anything. If i dig into it and can't figure things out I'll just let my mechanic tinker with it but I will buy more clips from either Bjsoffroad or teamgrandwagoneer. I did find the switch though as I was looking around in the jeep today. Thanks again for everything and I hope we can stay in touch and hopefully get to see the rigs. By the way my jeeps name is 74 Hoss. I like the name mater though. How did you come up with it?


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HeavyMetalThunder_81
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Location: Central Valley, CA

Re: 'Mater - '77 Cherokee S 4-door

Postby HeavyMetalThunder_81 » Wed Sep 02, 2015 6:26 pm

Looks great! Do you have any more plans for it?
-Jonny B.
1979 Cherokee Golden Eagle - 4" lift, 33x12.5x15
AMC 360 - 4180, TFI, Headers, Dual Exhaust
TH400 - Shift Kit, Deep Pan, Aux Cooler
D20 - Twin Stick'd
F D44 - 3.54, Open
R D44 - 3.54, Lock'd

1979 Cherokee Chief - Parts
1979 Cherokee Chief - Parts
1979 Wagoneer - Sold
1981 Cherokee Chief - Cubed


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