Skid plate malfunction - JeepForum.com

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post #1 of 18 Old 04-04-2013, 07:14 AM Thread Starter
silentmike29
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Skid plate malfunction

So was driving to a buddys house with Yogi the beagle. I went over the rail road tracks, heard a noise and saw my shifter had dropped 3 inches and the clutch was stiff. I couldnt shift! pulled into the grass and noticed the skid plate came off the frame on the passenger side.

Is the transfer case and the rear part of transmission supposed to be held up by the skid plate?! Seems like an odd design if thats true. I dont think the skid plate is original, as it doesnt really even seem to fit flush, and the drivers side is all redneck welded on the back and bolted on the front.

Another question: See those oval punch out holes on the frame? Are those present on 78 CJ5 frames? the tow truck driver didnt seem to think so...

Also, a i die a little inside when my CJ comes home on a flatbed LOL

damage:


temporary fix:


Yogi the beagle:



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post #2 of 18 Old 04-04-2013, 07:20 AM
lucdog
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From the picture it looks like a standard skid plate. Yes on the Frame holes.

From the look on Yogi's face, he's like , Dude, don't let that happen again.

1957 WILLYS pickup,
1973 J 4000,
1978 CJ7 DD.
1979 CJ7 360, TH400/Quadratrac.
1979 J20
1980 CJ5 trail Jeep.
1983 CJ7
1989 YJ the CJ to YJ.
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post #3 of 18 Old 04-04-2013, 07:34 AM Thread Starter
silentmike29
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lucdog, i am freakin jealous of your garage!!

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post #4 of 18 Old 04-04-2013, 07:35 AM
S76
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Can you put some new bolts back in it? Are the nut serts still in the frame?

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post #5 of 18 Old 04-04-2013, 07:36 AM Thread Starter
silentmike29
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I am going to figure that out soon...the nutserts look like they are still there but I am not sure if they are stripped or not...I feel like if they were in good shape the PO would have bolted it instead of halfass welded it

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post #6 of 18 Old 04-04-2013, 08:32 AM
rah2eq
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That's some pretty bad news. That is exactly the same as my 78 CJ5 factory skid, and the holes are the same as well. As has already been said, that skid is meant to hold up your driveline. If I were you, I'd check your motor mounts because your engine was holding up the rest of your driveline with a whole lot of torque on your motor mounts.
Also, since the skidplate has to be removed in order to take out your tranny, t-case, or get at the clutch/bellhousing, welding it on is a pretty poor solution of the PO. Good luck in sorting this out.

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post #7 of 18 Old 04-04-2013, 08:49 AM Thread Starter
silentmike29
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Quote:
Originally Posted by rah2eq View Post
That's some pretty bad news. That is exactly the same as my 78 CJ5 factory skid, and the holes are the same as well. As has already been said, that skid is meant to hold up your driveline. If I were you, I'd check your motor mounts because your engine was holding up the rest of your driveline with a whole lot of torque on your motor mounts.
Also, since the skidplate has to be removed in order to take out your tranny, t-case, or get at the clutch/bellhousing, welding it on is a pretty poor solution of the PO. Good luck in sorting this out.
thanks man...so the transmission is not mounted to the frame at all? just held up by the skid plate and engine/motor mounts?

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post #8 of 18 Old 04-04-2013, 08:55 AM
lucdog
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Quote:
Originally Posted by silentmike29

thanks man...so the transmission is not mounted to the frame at all? just held up by the skid plate and engine/motor mounts?
Correct.

1957 WILLYS pickup,
1973 J 4000,
1978 CJ7 DD.
1979 CJ7 360, TH400/Quadratrac.
1979 J20
1980 CJ5 trail Jeep.
1983 CJ7
1989 YJ the CJ to YJ.
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post #9 of 18 Old 04-04-2013, 08:58 AM Thread Starter
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is there a reason for this design? i feel like there should be a cross member for the transmission to rest on so if you lose the skid plate you dont lose your drive train

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post #10 of 18 Old 04-04-2013, 09:04 AM
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Quote:
Originally Posted by silentmike29
is there a reason for this design? i feel like there should be a cross member for the transmission to rest on so if you lose the skid plate you dont lose your drive train
As stated the skid plate is also the crossmember. Other than these last 2 post this week I have not ever seen someone lose a skid plate. So if you install a cross member under the skid and then you loose both the skid and cross member at the same time what holds it all up? Do you build a back up crossmember under the added crossmember? The factory design is proven to work, why reinvent the wheel?

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post #11 of 18 Old 04-04-2013, 09:10 AM Thread Starter
silentmike29
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Quote:
Originally Posted by MoC View Post
As stated the skid plate is also the crossmember. Other than these last 2 post this week I have not ever seen someone lose a skid plate. So if you install a cross member under the skid and then you loose both the skid and cross member at the same time what holds it all up? Do you build a back up crossmember under the added crossmember? The factory design is proven to work, why reinvent the wheel?
im sure its a matter of the skid plate being attached to the frame correctly which it was clearly not....the cross member would go directly underneath the transmission (there probably isnt room tho) so if the skid plate were to go, this would offer back up and prevent added strain on the motor mounts while you limp home

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post #12 of 18 Old 04-04-2013, 09:30 AM
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Quote:
Originally Posted by silentmike29 View Post
is there a reason for this design? i feel like there should be a cross member for the transmission to rest on so if you lose the skid plate you dont lose your drive train
as far as I know, all the jeeps (Cj/wrangler jeeps anyway) are like this. Even my TJ had the factory skid that doubles as the crossmember and transmission/transfercase mount. The reason? I don't know, I imagine it's just more efficient to make them that way, and might take up less room? Even most aftermarket skid plates work like that too.
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post #13 of 18 Old 04-04-2013, 09:32 AM Thread Starter
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Quote:
Originally Posted by danielbuck View Post
as far as I know, all the jeeps (Cj/wrangler jeeps anyway) are like this. Even my TJ had the factory skid that doubles as the crossmember and transmission/transfercase mount.
yeah, if it was bolted on correctly im sure it would never malfunction....thanks guys!! if its not one thing its another!

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post #14 of 18 Old 04-04-2013, 09:36 AM
danielbuck
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Quote:
Originally Posted by silentmike29 View Post
yeah, if it was bolted on correctly im sure it would never malfunction....thanks guys!! if its not one thing its another!
Might be a good idea to just crawl under there and look for any obviously loose bolts every now and then. I'm sure that you would have noticed one of those bolts missing (or possibly still hanging on by a few threads). It probably took months or longer for them to wiggle out.

I crawl under mine before every time I make a long trip (across country). And when I'm under there working on something, I just take a quick look at everything to see if anything is blatantly loose or missing

In fact, just last month I found MY transfer case bolts on the driver side were loose.
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post #15 of 18 Old 04-04-2013, 09:43 AM Thread Starter
silentmike29
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hahaha yeah...i should probably install a preventive maintenance check every so often...good idea! would save me from embarassing flat bed trips...it just looks wrong to have a beast like that on a flat bed lol

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