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Old 06-28-2005, 12:34 PM
88sunroof 88sunroof is offline
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My totally stock '88 GW (118,000 mi.) has two problems.
One: the rear 3.31 Dana 60 differential (limited-slip) has begun to "jerk" occasionally in tight turns and may also be the source of a rythmic "thump" as I travel along at 65 - 70 mph. Plenty of limited-slip fluid (changed every few years), correct size wheels & tires, rear diff gets no hotter than front, hubs are cool. Vehicle only off-road once in its life (about 12 miles). Suggestions?
Two: my wipers have suddenly begun acting herky-jerky when operating on a wet windshield and especially when NOT on an intermittent setting. I suspect a faulty governor, poor power connection or motor going bad. Any experience with this?
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Old 06-28-2005, 01:33 PM
DeadandBloated DeadandBloated is offline
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just curious, you got a dana 60 in it??
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Old 06-28-2005, 01:44 PM
joe joe is offline
 
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Check the play at the front drive shaft joints regarding the jerking motion. Your rear axle is a D44 not a D60. If it really is a D60 swapped from a J20 the fenders will be obviously cut to allow the wider axle fit. If it does have a LSD in it a tag on the diff will warn you to use LSD fluid but but if does have a trac-loc LSD and it's worn out it won't jerk etc, it'll just act like an open differential and not lock both wheels.
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Old 06-28-2005, 08:49 PM
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Millerluck Millerluck is offline
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My wipers started doing this then soon failed.
Failed in a downpoor driving on a major freeway.

A washer(with a small hole) on the motor's shaft only lets the nut tighten so far to lock the splines on the motor to the crank. The crank's splines were stripped out. They have a slight tapper to them.

So I drilled out the washer and cranked the nut back on supper tight. This let the motor bight into the crank again. Been good for a year now.

See how much slop it has by reaching under the dash and wiggle the crank and the bar that ties the wipers together.

Later

Larry Miller

[ June 29, 2005, 02:55 AM: Message edited by: Millerluck ]
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Old 06-28-2005, 10:46 PM
88sunroof 88sunroof is offline
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Joe,
Thanks for the u-joint tip. I will check them out pronto.
I can find no positive I.D. on my axle, but I'm sure you're right about it being a D44. What fooled me is that my service manual shows a D44 as the front axle but a D60 is the only Dana unit shown for the rear and, yes, it does at least say "limited slip" on one tag, "3.31" on another tag and "Dana" all over the place.

Larry,
I will check the splines on the wiper crank and for linkage slop. In other (non-Jeep) vehicles which I have, this problem has usually been electrical in nature. Thanks for the pointer.

Jeff
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Old 06-30-2005, 04:39 AM
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Carl Rasmussen Carl Rasmussen is offline
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Jeff you have a D44 on both ends I have seen yours at the ECI.
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Old 06-30-2005, 06:54 AM
FSJNut FSJNut is offline
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Jeff -
That is probably a completely true statement about having two problems. Those have to be the only problems it has, your GW is beautiful. I'm sure you have replaced your trailer connector by now.
As far as your wipers go, my '88 has been doing that for the last 140,000 miles or so. It seems like the linkage has some flex in it. I minimized it by making sure the wipers were "centered" on the glass by moving the wiper arm on the spline.
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Old 07-03-2005, 01:23 PM
88sunroof 88sunroof is offline
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Carl,
Good hearing from you. Consensus indicates that I do, indeed, have a Dana 44 out back. Factory FSJ service manual is most inaccurate and incomplete I have ever used and, yes, that includes the service bulletins at the back.
Hope the J-beast's restoration is coming along; maybe I'll see you at some future event.

and

FSJNut,
Yes, the trailer connector is all better. Also hung a new muffler & tailpipe (not really an off-road casualty; it was already rotten & fell apart from "trail agitation") and I have a few more upgrades on the front burner. FSJ Invasion was great and Dawn and I met some really super folks. Thanks to you and everyone who helped the "tenderfoot" in the hangar queen GW!
The wiper timing DOES seem to be a bit off, now that you mention it. Don't know why because the arms haven't been off of it lately. I'll try your suggestion, though.

Jeff
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Old 07-04-2005, 02:05 PM
FSJNut FSJNut is offline
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88sunroof - PM'd you.
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87 GW (401, nothing else out of the ordinary)
88 GW (Stock, 300,000 miles and still going strong)
85 GW (on its way back from being a parts car)
89 GW (parts car - more rust than frame)
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