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Old October 27th, 2007, 09:09 PM   #1
93XJcountry
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Question Flywheel

how long and hard will it be to replace the flywheel in my 1991 F150 4x4 with the 4.9L. and does anybody have a write up on it thanks.
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Old October 29th, 2007, 09:15 AM   #2
bigblue2230
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Not sure with the 4wd, but the 2wd is easy and quick. I would guess with the t-case, if you have to remove it from the transmission, will take a few hours for the whole job if you are on the floor.
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Old October 29th, 2007, 01:19 PM   #3
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Time 4 hours or less if you are mechanically inclined.

I mean no disrespect when I say this, but if you have to ask "Is this something I can do", then you probably would like to have a pro do it. Since this is not a "custom job" but rather regular maintenance, there are many books out there for you to reference rather than taking the advice of an online person that may have done half assed just to sell the truck. I will still tell you the basics, but get the book that has the answers directly.



step 1 ... get a haynes manual for $20 not the chilton!
step 2 ... read it and review torque specs and safety
step 3 ... undo battery cable, starter cables, starter, drive shafts
step 4 ... unbolt tranny mount not cross members, and tranny/engine bolts
step 5 ... remove sticks from inside cab as they will get caught on floor pan
step 6 ... strap tranny (with transfercase attached) to jack and move it to the rear so you have working room.
step 7 ... remove clutch and flywheel
step 8 ... reverse your steps back to one.

the book will tell you better how to do it, that is how i did it.
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Old October 29th, 2007, 04:20 PM   #4
Hackfabrication
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Quote:
Originally Posted by Never_Evil View Post
Time 4 hours or less if you are mechanically inclined.
It takes me 4 hours to wake up. And I'm mechanically inclined. I think that's a bit quick if you're working on your back. Now if you've got a nice lift, a trans jack, and some air tools....You might get it done in 'around' that time.

But I agree with the content of your post: If you've got to ask the question, you probably aren't prepared for the project.

To the original poster: Why do you need to change the flywheel? Is the ring gear stripped? Or are you also going to do a clutch job? If you're R&R'ing the flywheel, MAW replace the clutch and pilot bearing while you've got it all apart.

One last word of advice if you do decide to tackle this yourself:

Do not work alone. Have someone there to either pass you wrenches or actively check on you. This chit is heavy. And it's been known to fall on people. Especially if you're working on your back underneath the truck. It's always good to have someone there to either take you to the ER, or call the EMTs.
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