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Unread 07-14-2013, 01:56 PM   #1
VA_CJ7
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T176 - Vibration when in gear and clutch depressed

JeepForum helped us to fix the stuck gear issue we had, but it keeps repeating. The gear stick repair kit from Quadratec arrives soon.

I believe the problem is stemming from vibration we are experiencing in the trans/driveline.

A year ago we were hit from the rear which dislodged the left rear axle, 4" forward. When we got it back from the shop, I noticed more than usual noise when in gear and vibration in the gear shifter.

I hadnt driven it in many months and my son didnt mention it was getting worse. But it really groans when it is in gear, your are rolling, and depress the clutch.

I am heading out now to inspect the driveshaft, flanges, and ujoints which may have been damaged in the impact.

Anything else I should look at in the transfer case or trans?

Thanks,
Bill

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Unread 07-14-2013, 02:13 PM   #2
GTNMUDY
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If all the U joints look good, check the driveshaft, may want to have it balanced.


Larry
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Unread 07-14-2013, 02:40 PM   #3
MoC
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IIRC your RMS was leaking correct? If so and its bad enough the clutch is getting contaminated with oil which could be causing the chattering.
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Unread 07-14-2013, 03:14 PM   #4
VA_CJ7
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No rear main seal issue on this Jeep. We have a new engine. Must be another similar user.

I found a missing transmission mount nut on the drivers side of the skid plate. We have secured it with lock/flat washers & nut.

Went to center the trans gear fork, since it had stuck in 3rd, but it will not shift into neutral.

I can get the fork to click into 3rd, towards the rear, but it will only go 1/2 way towards neutral.

Have tried rocking the Jeep in gear, transfercase into neutral, etc...

Am I looking at opening up the trans to investigate?

Any help would be appreciated.

Thanks,
Bill
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Unread 07-14-2013, 03:29 PM   #5
GTNMUDY
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My T-176 had a issue like yours. I had broken the shift rail on the shift control housing. Easy fix once you got the part. Just pull the control housing off the transmission case and look at the rails.

Lucky for me, I was in 3rd gear and was able to make it home

Sounds like you have several problems....
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Unread 07-14-2013, 03:57 PM   #6
GTNMUDY
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You didnt mention if you could move the jeep when you push the clutch in. If the jeep wont move when clutch is pushed in, then forget the shifter you got issues with the tranny. Possible broken part in the gears locking them up.

Good luck

Larry
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Unread 07-14-2013, 04:01 PM   #7
VA_CJ7
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Yes, jeep moves with clutch in.
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Unread 07-14-2013, 04:09 PM   #8
GTNMUDY
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OK, since it's stuck in 3rd gear and the jeep moves means all is free in the tranny and transfer case.

Check the shift rails.

Larry
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Unread 07-14-2013, 04:39 PM   #9
VA_CJ7
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Yes. I agree. I had it running, went around the block. Shifting is odd - the "H" is off. Trouble going into 4th. Likes to stick in 3rd. Not the easy shifting it had 2 years ago when we replaced the engine & clutch.

Am I looking at dropping the tranny to fix or can I remove the shift housing with the tranny in place?

Also, when I got it into neutral and released the clutch with the engine running. I'm hearing a lot of noise from the trans. Not clashing of gears but loud groaning/whining.

Thanks,
Bill
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Unread 07-14-2013, 05:14 PM   #10
GTNMUDY
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Pull the boot off and trans cover, you can get at the bolts on the shift housing.

No need to pull tranny (unless you want to)

Mine broke back in 93, I cant really remember what happened just before it broke.

When I inspected it if broke at the interlock pin.

Hope this helps.

Larry
t-176.jpg

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Unread 07-14-2013, 07:06 PM   #11
VA_CJ7
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Thanks. As you know I was not excited about dropping the tranny... I had the boot off and could see that I could get to the bolts.

Didn't know if I could get the cover off and out knowing the shift forks extend down. Sounds like I can.

Will report back....

Bill
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Unread 07-16-2013, 11:51 AM   #12
VA_CJ7
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Ok, opened up our T176. Just disassebled and cleaned the three shift rails, springs, plates, etc. Just saw in the diagram above where the #15 pin goes when I reassemble.

Bad news is the rails all look fine, little wear, smooth, no burrs, etc. The little bit of cleaning with scotchbright pad and purple power has them back nearly new.

Now I'll some advice in the tranny itself.

1. All gears apear ok except #4. There are three equally spaced score marks on the top of each gear.

2. When I grab R,#1, & #2 gears there seems to be some play.

3. When I grab #3 & #4 gears there is no play.

4. Jeep is in gear because when I rocked it, trying to free up 3/4 the gears moved some.

I really do not know what I should try next.

Any help is appreciated.

Thx,
Bill
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Unread 07-16-2013, 12:10 PM   #13
John Strenk
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1. That's OK. Mine has the same markings on the #4 gear.


2 + 3 +4. Are you in 3rd or 4th gear?
Check the position of the syncros;

Neutral looks like this:
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Unread 07-16-2013, 02:28 PM   #14
VA_CJ7
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John,
When I test drove it the other day, it was stuck in third when I rolled in the driveway.

It appears to be the same although my 3/4 syncro appears to be a different type. Maybe?

As you can tell I am new to the tranny thing, but pretty mechanical. We replaced the engine, clutch, and all major systems 2 years ago, so ready to tackle whatever I am up against.

My 18 year old wants his Jeep back before starting college next month.

Here are photos of my gears and my shift rails/forks:
t176-gears-3rd.jpg

t176-shift-rails-forks.jpg

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Unread 07-16-2013, 03:07 PM   #15
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