-
Body under the car! That would be an easy fix!
Good news transmission ok. Yes all mounts look good, bolts tight. I'll keep looking.... I just remember first time happened, shifted in gear clutch out and clunk and jump. Was hard enough to be suspicious, so something out of sorts. Somewhere. I'll keep looking... thank you so much for all your time and knowledge. I feel a little smarter now in another area of the jeep. Grandma did name it Bad News, she knew something I bet.
-
Paging Dr.Dana, paging Dr. Dana... or anyone who has experienced this.
Update.
So I did find a broken poppet spring, but on the high gear side. All replaced and transmission back together... as I expected same problem exist. My dad came down today to help.
Put on jack stands, put in reverse and it's like the drive shaft and axle bind up and shake, noise also. Did go thru forward gears and 3rd gear also did a little bit. Removed diff cover, metal dust in oil not chunks. Examined gears nothing broken. Turn drive shaft by hand now at this point, he thought it was a little sloppy back and forth. We could see nothing that said oh that's it. Now turn drive shaft counter clockwise and turns smoothly. But when turn drive shaft by hand clockwise it's hard to turn. Two hands . Seem like a hard spot then breaks loose turns and hits hard spot again..... something is binding up when shaft rotates clockwise. Takes all my might to free it to turn. We are not sure why, our thoughts are maybe a bearing? But which one if so. So I thought I would throw an update out here to see what y'all think.
Thanks guys
Scott
-
I wouldn't run it with the suspension hanging down at a high RPM or, for long. The u-joints are opperating at the highest angle possable when the suspension is hanging. All that said your problem is an easy one Scott. Check this link.
https://willysjeepforum.kaiserwillys...or-new-springs
I have a feeling this will help you.
-
I haven't lift the jeep or changed anything in suspension. Set a pair of jack stands under the axle to see why its binding up in reverse. Actually stalled the jeep while wheels on ground. I know the rear end question was asked already trying to figure out reverse problems. Couple people have mentioned a brake hanging up? I can turn the tires with no problem and hear or feel nothing in drums. Whatever broke that day is hidden between transmission transfer cars to drive shaft and rear end. The rear end shutters real bad, but only in reverse.
-
Also u joints are tight... so I've inspected transmission gears all good. Rear end gears all good. Have not looked at transfer case gears or pulled drums off at this point. But we did think it was odd rotating the drive shaft by hand one direction no resistance but opposite direction hard to rotate....
-
Scott it is possible you have a brake shoe or component broken/loose in a rear drum or the emergency brake that is jamming up when the drum spins backwards. Crazier things have happened. I cant think of anything else it could be. If it moves fine forward but wont go backward, the transfer case is not at fault. The direction of torque is controlled by the transmission. The rear axle also would not be suspect if the vehicle/driveshaft moves fine forward.
Take the rear brake drums off and see if it still happens. If you don't find anything at the rear drums, pull the driveshaft and spin the emergency brake back and forth. With the rear driveshaft removed, lock it into four wheel drive and run on the front axle. See if it still happens without the rear driveshaft installed.
-
Yea the next plan is to pull the drums, since it's a rainy day.. the emergency brake has no shoes, removed all those components long ago.
But yes thanks for the front wheel drive thought. Will try also if no issues in rear drums.
Thanks again fingers are crossed all directions.
-
Ok my conclusion is. Nothing is broken in front axle back axle front and rear brakes ok. Yes still jumps in reverse with rear drive shaft removed with front axle locked in.
My conclusion is back full circle to the transmission. No drive shafts hooked up, no broken gears in transmission or transfer case. Turn yoke by hand counterclockwise turns free and easy. Try to turn it clockwise and it's hard to do. Like a high spot or a cam. Turns half revolution then stops hard, break it past that point turns easy for another half revolution . My opinion is.... a bearing must be bad or a shaft is bent in the transmission or transfer case. Every thing else eliminated.
-
Scott, are you saying you have no driveshafts hooked up and you are turning the output yoke and it wont turn smoothly clockwise? I am assuming you put it in a gear and depress the clutch and turn the yoke. You are saying with the clutch depressed and the transmission in reverse, the yoke will turn smoothly counterclockwise but wont turn smoothly clockwise? If this is the case there is nothing it can be but something in the transmission reverse power flow or a bizarre clutch issue. If you have the clutch depressed and the transmission is doing what you are saying, something is wrong in the transmission and/or clutch.
-
Transmission is in neutral.
-
When you say “front axle locked in” what exactly do you mean there scott?
Transfer case locked into 4 wheel drive either hi or low range and or which?
My thought (for what it’s worth) try turning the yoke in both directions in 2 wheel drive hi range then shift it to low range and try it in both directions.
If it still locks up I’d say it’s a bearing going south in the transfer case somewhere.
-
Yes I locked in the front hubs. Shifted transfer case in. Tried high and low. Moved fine foreward, jumped and bound up in reverse. Unlocked the front end put took transfer case back out into regular drive mode.
Front axle is taken out of picture now. Shift to first gear clutch out cant turn by hand, engine off, push clutch I can turn yoke by hand both directions. Shift into reverse, clutch out, wont turn, clutch pushed in wont turn clockwise but will turn counterclockwise and does take a little more force and sounds a little louder.... this is all turn by hand at the yoke. When in neutral out of gear no clutch pushed in does like I described earlier......
Hope I'm explaining ok,
-
But yes that's my opinion since I can see nothing broken but feel it turning by hand and the way it binds up is I'm thinking a bearing is going out... got that funny feeling I'll be pulling transmission out of vehicle.
-
That sounds like it could be one of the transmission’s roller bearing sets to me. I don’t think a ball bearing would act like that. Maybe the counter shaft bearings?
-
Did you try turning by hand with the transfer case in neutral?
-
At this point I would say it can only be one thing. The reverse idler is the only item that is isolated in turning the output in reverse gear. It sounds like the bearings/shaft/gear assembly has some damage. When you had the cover off initially, the reverse idler is well hidden. It is possible you couldn't see or hear problems with it in the first test with the cover off.
Last test, remove the rear driveshaft, pull the cover off again, shift the transfer case into 2 wheel high. Repeat what you just did. With the clutch pedal pushed down, the transmission placed in reverse by hand, See what is happening when you try to turn the output.
-
Test performed as you described and here are the test results.....
In reverse position I can only turn output in one direction and there is resistance and some noise. I cannot turn in opposite direction. With gear in neutral or first it turns easy and in both directions. All gears are turning no broken teeth. Now when in reverse I try in direction that it wont go, and I jam output back and forth with force i will gain a tooth in direction it wont go....
I assume i should be able to spin shaft in both directions in reverse with clutch pushed. So does this seem like an idler is bound up under the pressure of two gears? I think I'm convinced it is an idler/ shaft/ bearing gone out, if my assumption is correct.....we do not see anything obvious other than can only turn one direction...
That's my results....
-
I give in, this tranny, transfer case and clutch assembly is as basic as they get other than a 800 piece Lego set and I’ve never seen anything as complicated as this:(:(
It’s got me Baffled!!!!
-
Pull it out Scott. Lets take a look at the reverse idler.
-
Will work on that....
Sorry if I'm annoying people, it's the first time I've been inside a transmission.
Thanks for advice.
-
Scott
Get on YouTube and search for “Rick Stivers T-90 Teardown” video, it will walk you through step by step tear down and rebuild of your tranny.
He also has the teardown and rebuild of your transfer case, you may as well go through it while you have them both on the bench!!!
-
You aren't annoying anyone Scott. This is what the forum is for, and this is how we get the information! There is a lot of support captured here over many years. Be sure to search the tech sections for subjects that have been encountered before.
When you look at Rick's guide, be sure to make this correction. https://willysjeepforum.kaiserwillys...-Stivers-Guide
It is important to note, the Willys Universal Manual does a great job of walking you right through the transmission. I would highly recommend following it after watching Rick's video.
At this point I think you have done as thorough an investigation as you can over the internet! If we have communicated what is going on back and forth correctly, I would say the reverse idler area is at fault. I am anxious to see what is going on in there.
-
thanks guys i will check out those videos. i`m anxious too.
-
It is strange - and I've noticed it over several years now - topics seem to run in cycles.
We go deeply into the innards of engines; cooling, oiling, valves, and a lot of carburetors. Then we go off on electrical topics; generators/alternators, regulators, gauges. But - this last month we have been in gear school with the lessons on how to set up a differential and your questions about the innards of the transmission.
Then there are the metal magicians who are in a whole different world of their own .....
You think we'd know a little by now - but we're all still learning.
-
So a quick question. Doing parts inspection and making a shopping list. The reverse idler gear that the supplier list says 15 tooth count. The one in my transmission is a 16 tooth count. Would this make a difference?
My reverse gear is a 29 tooth count, which is what they list in catalog for replacement.
-
Up until the mid to late 60's T90's had 16 teeth. For some reason the tooth count was phased in to 15 in the late 60's. You will find both 16 and 15 in T90's from the mid 60's and later. The gears are interchangeable.
-
Ok. So your saying I should be good with a 15 tooth gear.
Thanks for that info.
-
The Problem Discovered
I just had the pleasure of meeting Scott in person! We had the opportunity to discuss this issue. In the end when Scott tore the trans down, he discovered the issue. Considerable wear was allowing the brass synchronizer rings to cock on the main shaft. This was causing the bizarre "lock up" symptoms.
Scott's family is busy protecting our country right now, so I figured I would let anyone following the dilemma know what the final outcome was. Sometimes the symptoms are very difficult to diagnose. When in doubt... rip it out!
-
3 Attachment(s)
Yes it was a pleasure meeting you Bob! Enjoyed the conversation. Yeah sorry I did not get back with a follow up, sometimes life gets busy. But yes I did not find the problem until I tore it apart. And then the issue was clear. Will include some pics of my discovery. Also any thing in question was replaced. When in doubt throw it out, I was told. All back together and shifts gears very nice.
-
Nice pictures of the Trans Scott. Like I said about your axle work, I wouldn't hesitate to use it in peeJ (mine).
https://willysjeepforum.kaiserwillys...chmentid=10955
-
Wow! Gave me goosebumps there. Thank you for the compliment.