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Unread 08-15-2015, 08:57 PM   #1
1980tallcj7
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Favorite way of replacing clutch?

Hey y'all,
I recently developed a problem with either the pilot bushing/ bearing or the throw out bearing . The symptom is a chattering /screeching/ vibration when I press the clutch in while throttling up the engine, like when you blip the throttle for a downshift.
So, curious what everyone's favorite method is for changing the clutch. Engine out?, or pull the transfer case and transmission from underneath?

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Unread 08-15-2015, 09:32 PM   #2
Ken4444
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I would leave the engine in. Remove the drive shafts, use a transmission jack to support the trans, unbolt the bellhousing from the engine, pull the trans and transfer case away from the engine. Replace the pilot bushing/bearing while you're in there.
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Unread 08-15-2015, 09:56 PM   #3
only in a jeep cj
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Folks seem to be very divided on this topic. Some prefer to pull the transmission and tcase together and or even leave the bellhousing on the transmission. Some prefer the transmission jacks etc.

Ive done a ton of these and for me, I prefer to use one jackstand and a floorjack. I support the tcase with the floorjack, remove bellypan, support under trans with jackstand, remove t case, support under bellhousing and remove trans, then bellhousing. EACH one can be easily removed by hand and replaced the same way allowing for easy spline line up.
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Unread 08-15-2015, 11:53 PM   #4
RedNeckCorvette
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I have done them each way but like to pull the motor.
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Unread 08-16-2015, 04:09 AM   #5
Mike Romain
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I prefer to remove the motor. Working from the top is way easier in my book, plus I live in the rust belt where skid plates seldom come off and go back on without serious trouble. Snapped or spun bolts.
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Unread 08-16-2015, 07:05 AM   #6
bob4703
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Engine! Simpler, cleaner, and quicker unless you have a lot to remove or disconnect before you remove engine.
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Unread 08-16-2015, 07:30 AM   #7
Matt1981CJ7
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Hmm...it never occurred to me to pull the engine to replace a clutch.
That seems like a LOT of extra work to me.

Here's how I do it:

1. Support the engine.
2. Disconnect the rear driveshaft at the t-case.
3. Stick my rolling jack under the skid plate and remove the bolts holding the skid to the frame.
4. Remove the bolts holding the transmission to bell-housing.
5. Slide transmissiont/t-case/skid rearward as one unit until the input shaft clears the bell.
6. Remove bell-housing, replace clutch parts, and reassemble.

Matt
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Unread 08-16-2015, 08:51 AM   #8
Pathkiller
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I would never pull an engine for a clutch job. Dropping the transmission and transfer case is a lot easier in my opinion.
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Unread 08-16-2015, 08:55 AM   #9
jeepdaddy2000
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I too am a supporter of pulling the motor. It gives you a chance to check a couple of other things, such as hoses, motor mounts, clutch linkages, and makes re installation much easier as well. The only real issue can be the exhaust.
Of course, both methods hinge on having the proper tools. If you can get the Jeep up and can actually sit under it, removing the transmission isn't a bad option. Not having an engine hoist can hamstring the engine removal.
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Unread 08-16-2015, 09:06 AM   #10
Matt1981CJ7
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Quote:
Originally Posted by Pathkiller View Post
I would never pull an engine for a clutch job. Dropping the transmission and transfer case is a lot easier in my opinion.
Yep. And if you use the method I described above, you don't actually "drop" anything to the ground. You just slide it all rearward.

The transmission and t-case stay attached to each other, and the skid acts like an out-rigger to prevent the assembly from rolling over off the jack. It really does work slick.

Matt
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Unread 08-16-2015, 09:38 AM   #11
Jon In Tucson
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Quote:
Originally Posted by 1980tallcj7 View Post
Hey y'all,
I recently developed a problem with either the pilot bushing/ bearing or the throw out bearing . The symptom is a chattering /screeching/ vibration when I press the clutch in while throttling up the engine, like when you blip the throttle for a downshift.
So, curious what everyone's favorite method is for changing the clutch. Engine out?, or pull the transfer case and transmission from underneath?

Perfectly timed thread for me! I have the same issue as you have 1980, the throw out bearing make an awful noise when the pedal is depressed. If I go to the trouble of dropping the transmission and transfer case for a bad throw out bearing, I would be crazy not to do the rest of the clutch components while apart.
What kind of area do you have to perform the job? I don't have a garage, but I do have a nice smooth slab of concrete in the back yard. That will make using the floor jack and stands easier.
I like Matt's description of the steps to remove the parts to access the clutch components.
However, I understand Mike's concern regarding skid plate bolts becoming a solid rusted mass.
Here in sunny AZ not so much of a worry. My worry is that a pack rat will have made his nest in the recess of the skid plate and jump out as I am loosening it and startle me enough to bang my head on the frame... After it cools off a bit, (under 100*) I'm going to tackle this chore. So far as I have priced out the parts, LUK clutch kit is very reasonable from Rock Auto even with shipping. Our local Pep Boys has the LUK kit for about $50 more. While you're in the clutch that deep, its a good time to resurface/replace the flywheel and look at the starter ring. I just replaced the starter recently and will be giving the starter ring a close inspection. God bless.
Jon In Tucson
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Unread 08-16-2015, 09:44 AM   #12
Matt1981CJ7
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Jon,

I forgot one step.

Before you slide the transmission/t-case/skid assembly rearward, be sure to disconnect the speedo cable, 4x4 indicator, and reverse light wiring.

Matt
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Unread 08-16-2015, 07:25 PM   #13
1980tallcj7
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Quote:
Originally Posted by Matt1981CJ7 View Post
Jon,

I forgot one step.

Before you slide the transmission/t-case/skid assembly rearward, be sure to disconnect the speedo cable, 4x4 indicator, and reverse light wiring.

Matt
Ummm, didn't see any mention bout the front driveshaft, of shifters either
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Unread 08-16-2015, 08:35 PM   #14
jeepdaddy2000
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Quote:
Originally Posted by Pathkiller View Post
I would never pull an engine for a clutch job. Dropping the transmission and transfer case is a lot easier in my opinion.
LOL
you have never tried to install a clutch in an early Bronco
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Unread 08-16-2015, 10:22 PM   #15
CSP
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The transmission and tcase can be out faster than the fluids drain and engine wiring is disconnected IMO.
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