Product Videos
Questions & Answers
Sort By:
Questions: I have a 1968 CJ5 with dauntless. Not sure if T86 or T90 for transmission. Reverse, 2nd and 3rd shift perfect. 1st gear even when in complete stop to shift once gas is applied makes terrible noise and pops out of gear. No issue with reverse. I am thinking the gear might be broken/ damages. Do you sell the 1st gear? and it is common between T86 and T90. I know T86 parts are hard to find. If I have a T86 what gears and parts if any can be reused using your T90 rebuild kits
Question By: Shahram on Aug 30 2020 6:09 PM
Most likely a T86 in that set up. It will be stamped on the side of the case. Please email mike@kaiserwillys.com to help out.
Answer By: Willys Jeep Parts Tech on Aug 31 2020 5:46 AM
Questions: Hi there. I have the T-90 in my 1964 Universal. What do you recommend for the proper lube. To follow up, do you sell it. There is so much out there about GL4 vs 5 and I even saw GL1 out there as well.
Question By: Jeff on Jul 29 2020 1:45 AM
Straight GL-4 non synthetic (80/90 weight gear oil) its good for yellow metals.
Answer By: Willys Jeep Parts Tech on Jul 29 2020 5:46 AM
The consensus on the various forums per the Owners Manual appears to be Sta-Lube SAE 85/90 GL-4 as safe for yellow metals, meets requirements of manufacturer for transmission and transfer case
Answer By: Spencer Crawford on Aug 26 2021 7:30 PM
Questions: Does this assembly have both second and third gear synchronizes. The picture is not clear
Question By: Sandy on Mar 8 2018 12:29 AM
There is only one sychronizer in the T90 between 2nd and 3rd.
Answer By: Willys Jeep Parts Tech on Mar 8 2018 6:06 AM
Questions: I have a 56 CJ5 with a T-90 transmission, first gear is not synchronized. Can I make first gear synchronized when I rebuild the transmission?
Question By: PAT kENNEDY on Nov 6 2017 12:19 AM
Sorry, the T90 will not do this. Youll need to come to a complete stop when shifting from 2nd to 1st.
Answer By: Willys Jeep Parts Tech on Nov 6 2017 5:45 AM
Questions: I have a 48 cj2a with a t90 when coasting there is a noise that sounds like a bad bearing. The noise is not present as long there is pressure on the trans such as acceleration of slowing down in gear. Any suggestions
Question By: David Jones on Aug 13 2017 1:29 PM
There are a few directions to go on this. Please give us a call toll free and we can go over what to check. 888.648.4923. Thanks
Answer By: jdgranberg@gmail.com on Aug 14 2017 6:23 AM
Questions: What transmission should be in a 71 jeep cj5 with a225 biuck eng.
Question By: Anonymous on Mar 3 2015 12:00 AM
They typically used the T86AA, T14 or T90 transmissions.
Answer By: Willys Tech on Mar 4 2015 12:00 AM
Questions: I have a71 cj5 with a225 buick en. It keeps tearing out 3rd gear Y thanks
Question By: GORDON on Mar 3 2015 12:00 AM
If you have the T90 transmission in there the synchronizer is a good place to start. I would also check out your poppet balls and springs.
Answer By: Willys Tech on Mar 4 2015 12:00 AM
Questions: I am looking at a 1948 CJ-2A with the T-90 Transmission to buy but it will not shift into third gear. Took the shifter off to inspect the gears and everything looks OK with the gears and synchronizer. Could the synchronizer be bad or is there something else to look at. It shifts fine in the other gears.
Question By: Henry on Sep 16 2014 12:00 AM
I would inspect your sycronizer closer. I would also look at any excessive wear and make sure any needle bearings havent dropped.
Answer By: Willys Tech on Sep 16 2014 12:00 AM
Questions: I have a T-90 transition in my 46 willy There was a clicking noise in the tranny I removed the top and found the shift plates had came out of the synchronizer assembly what causes this.
Question By: steve on Aug 19 2014 12:00 AM
Sounds like your schronizer is very badley worn and your brass blocking ring is done.
Answer By: Willys Tech on Aug 19 2014 12:00 AM
Questions: Mine is now popping out of 3rd gear, same question, will this assembly solve 3rd too?
Question By: Anonymous on Aug 10 2014 12:00 AM
The sycronizer may be the problem but you may need to check your poppet balls and springs.
Answer By: Willys Tech on Aug 11 2014 12:00 AM
Questions: Was driving in 1st low and herd a noise from the transmission like a bearing spinning that was dry. Now I still have first but it won't shift into 3rd. Opened up the top and don't see any visible signs could this be it..
Question By: Anonymous on Mar 23 2014 12:00 AM
Sounds like its your syncronizer if it wont shift. I would take it apart and check for damage.
Answer By: Willys Tech on Mar 24 2014 12:00 AM
Questions: Hi there. I couldn't get my t-90 to shift into second gear, opened the top, and discovered the second gear brass gear is broke in two pieces. Since I will have to tear down the tranny to fix the problem, what parts would you recommend replacing? Thanks!
Question By: chris on Mar 17 2014 12:00 AM
We have a T90BSG kit as well as they syncronizer assembly or just the brass rings if you need them. Call us toll free. We are more than happy to help out.
Answer By: Willys Tech on Mar 17 2014 12:00 AM
Questions: never changed third gear syncrolize before is it farely easy?
Question By: rodney on Mar 16 2014 12:00 AM
We do sell mechanics manual that will walk you thru the process.
Answer By: Willys Tech on Mar 17 2014 12:00 AM
Questions: I have a 1971 cj5 with a t90 3 speed. The problem is is that everytime I shift I have to let the motor idle down b4 I can shift. The other problem is is that i can't shift from 2nd gear to 1st with out being almost stopped. Do I needa redo my tranny?
Question By: Luke on Sep 28 2013 12:00 AM
Your 1st and 2nd speed gear are not syncronized. You have to come to a complete stop when shifting from 2nd to 1st or you will grind gears.
Answer By: Willys Tech on Sep 30 2013 12:00 AM
Questions: I have a 1956 CJ5 with a 225 odd fire Daunless. I'm pretty sure the transmission is a T-90 (3 speed). My question is... I have a syncronizer assy. (new complete) from a 1966 M-274 military Mule (3 speed) transmission. It looks exactly the same as the one you guys have for sale. Same number of slots (6) for the shaft and everything. will it fit my T-90 3 speed ?
Question By: Dave Wilson on Jul 29 2013 12:00 AM
Somebody put an unoriginal engine in there so you may want to check the transmission as well. It will be stamped on the drivers side case. As long as you have a T-90 they should be the same for either.
Answer By: Willys Tech on Jul 30 2013 12:00 AM
Questions: I have a 1966 CJ5 How do I tell which transmission is in it? Model # 8305A Serial #200778.. I thought it was a T90 But some others say no way?
Question By: Joe on Feb 27 2013 12:00 AM
In 1966 it was optional to have a T90 or T86AA. It will be stamped right on the side of the transmission in the housing.
Answer By: Willys Tech on Feb 27 2013 12:00 AM
Questions: I assume this requires the motor to be pulled? Thanks, Bill
Question By: Anonymous on Jan 12 2013 12:00 AM
Not the motor no. You can just drop the transmission down to get to it.
Answer By: Willys Tech on Jan 14 2013 12:00 AM
Questions: My transmission unless i hold the shifter wants to pop back a bit out of 2nd then it makes this terrable grinding noise and i cant get it to want to shift down from 3rd to 2nd unless im going really slow i understand its a syncro issue but is this the only part i need to make things better?
Question By: Csmeron on Sep 29 2012 12:00 AM
This should probably do the trick. I would check for any excessive wear on the gears themselves too.
Answer By: Willys Tech on Oct 1 2012 12:00 AM
Questions: What causes these to go bad, and make it jump out of second gear? Hard shifting or just wear out over time? Thanks, Harry
Question By: Harry on Jun 13 2012 12:00 AM
The brass wears over time. Really any transmisison that is that old will have alot of wear. Also the springs, shift plates ect take wear.
Answer By: Willys Tech on Jun 14 2012 12:00 AM
Questions: jumps out high gear whats up
Question By: jeep freak on Feb 21 2012 12:00 AM
Its your syncronizer. This should take care of it for you.
Answer By: Willys Tech on Feb 21 2012 12:00 AM
Questions: I have to completely stop to downshift from second gear to first, is this what I need? Thank you.
Question By: Marty on Jul 2 2011 12:00 AM
The T90 is not sync'd between 2nd to 1st. You always have to come to a complete stop. This is the syncronizer between 2nd and 3rd.
Answer By: Willys Tech on Jul 5 2011 12:00 AM
Questions: I am having trouble with the transmission popping out of second gear. Will this fix it or should I look at the forks and poppet springs?
Question By: Brad on Jun 23 2011 12:00 AM
This should solve your problem.
Answer By: Willys Tech on Jun 23 2011 12:00 AM
You Might Also Be Interested In
Weekly Willys highlights and discounts sent to your inbox
