View Full Version : TKO 600 issue
tbl100
10-06-2020, 05:56 PM
Hi, I have a TKO 600 mated to a Gen 2 Coyote with a Forte's TKO-600 Hydraulic Clutch Kit. Yesterday I took the car out for it's first go-cart and everything was fine. Today I can not shift out of neutral. I don't know much about the transmission so I'm looking for advise on how to proceed with troubleshooting or fixing the issue. I believe the hydraulic clutch is working properly. Thank you for any assistance. -Tim
I have also installed a Forte's TKO Mid-Shifter assembly.
RoadRacer
10-06-2020, 06:05 PM
I guess that's an external slave cylinder - does it move when the clutch is depressed? Even if an internal throwout bearing you should still be able to see inside the bellhousing while someone pushes clutch.
Did you put oil in transmission?
tbl100
10-06-2020, 06:19 PM
I guess that's an external slave cylinder - does it move when the clutch is depressed? Even if an internal throwout bearing you should still be able to see inside the bellhousing while someone pushes clutch.
Did you put oil in transmission?
All clutch parts are moving. When I depress the clutch petal the slave cylinder rod extends and the clutch fork moves forward as designed. I have filled the transmission with the required amount of fluid so I know we are good there. To me, and I'm am probably the least qualified to know, it seem like a shift linkage issue. One thing I forgot to mention is that I have installed a Forte's mid shifter as well. Again it was shifting fine yesterday but today It won't shift out of neutral.
nuhale
10-06-2020, 07:01 PM
You may have to adjust the rod in the slave. I have the same setup and from Mike. Took quite a bit of back and forth to get the rod length correct. I had to make another rod using a bolt to get the right length. Cut off the hex end and cleaned it up. Other than that can you get it in Reverse?
first time builder
10-06-2020, 07:05 PM
Can you shift with engine off ? If not the shifter jumped out of position inside the trans. Call Mike Forte he will tell you the easy fix.
Kenny
RRussellTx
10-06-2020, 07:13 PM
Call Mike Forte he will tell you the easy fix.
Kenny
X2, Call Mike - He'll set you straight.
tbl100
10-06-2020, 07:13 PM
You may have to adjust the rod in the slave. I have the same setup and from Mike. Took quite a bit of back and forth to get the rod length correct. I had to make another rod using a bolt to get the right length. Cut off the hex end and cleaned it up. Other than that can you get it in Reverse?
It seems to get into reverse.
tbl100
10-06-2020, 07:14 PM
Can you shift with engine off ? If not the shifter jumped out of position inside the trans. Call Mike Forte he will tell you the easy fix.
Kenny
No I can't shift with the engine off. Thanks. I'll contact Mike.
I, too, have the mid-shift. There are two bolts in the mid-shifter. One limits the distance you can go forward (1,3,5), while the other on the back, limits how far you can shift into 2, 4, R). I had a situation where the bolt moved on me and I couldn't get into 2, 4 or R. Just a hunch - check your bolts in the mid-shifter and ensure they're in the right place. It's an easy fix if it is the problem.
tbl100
10-06-2020, 09:34 PM
I, too, have the mid-shift. There are two bolts in the mid-shifter. One limits the distance you can go forward (1,3,5), while the other on the back, limits how far you can shift into 2, 4, R). I had a situation where the bolt moved on me and I couldn't get into 2, 4 or R. Just a hunch - check your bolts in the mid-shifter and ensure they're in the right place. It's an easy fix if it is the problem.
Thank you, I just checked the two bolts and I can't even get close to them when trying to shift. I can't get out of the neutral position but can get into reverse.
RBachman
10-07-2020, 06:28 AM
Same thing happened to me. Mine resolved by re-bleeding the fluid at the slave cylinder, and verifying that the slave cylinder rod is properly set.
rich grsc
10-07-2020, 07:33 AM
Everyone needs to read the post. It won't shift out of neutral, all clutch parts are moving, it's not a clutch issue. Sounds like a shifter problem.
I haven't heard of one stuck in neutral but have heard of them getting stuck in a gear as somehow during a shift one of the shift lugs ends up not in the neutral position. This may require you to pull the cover and physically realign the offending lug. Attached is a procedure for aligning the lugs (different cause but same functional failure), start at step #2.
https://americanpowertrain.com/shifter-stuck-in-gear-after-your-new-transmission-shows-up-here-is-the-cure/
Whatever is keeping your trans from shifting out of neutral when the engine is not running has nothing to do with the clutch.
Maybe a dumb question, but what fluid are you using?
tbl100
10-07-2020, 01:42 PM
I haven't heard of one stuck in neutral but have heard of them getting stuck in a gear as somehow during a shift one of the shift lugs ends up not in the neutral position. This may require you to pull the cover and physically realign the offending lug. Attached is a procedure for aligning the lugs (different cause but same functional failure), start at step #2.
https://americanpowertrain.com/shifter-stuck-in-gear-after-your-new-transmission-shows-up-here-is-the-cure/
Whatever is keeping your trans from shifting out of neutral when the engine is not running has nothing to do with the clutch.
Thank you. I was thinking I need to perform this and I'll give it a try.
tbl100
10-07-2020, 01:42 PM
Maybe a dumb question, but what fluid are you using?
Mobil 1 Synthetic ATF
Mobil 1 Synthetic ATF
TREMEC recommends GM Syncromesh MTF (12345349 or 88900333). Not sure how ATF works in this transmission or if it's acceptable.
JohnK
10-07-2020, 02:42 PM
https://www.tremec.com/faqs.php
Q: What type of fluid does TREMEC recommended? (https://www.tremec.com/faqs.php#collapse-1)
A: For all TKO 5-speed models, TREMEC recommends TREMEC HP-MTF, GM Synchromesh™ or Mobil 1 Synthetic ATF. For all other aftermarket models we recommend Dexron III ATF
This is what I've seen:
The use of Dexron-III or Mobil 1 ATF in T-5 and Magnum-series transmission, and “GM” Syncromesh in TKO transmission will remain acceptable practice until otherwise specified.
https://www.tremec.com/not_am_detalle/mp-mtf-transmission-fluid/
Seems to be a little conflicting information between the sources.
tbl100
10-07-2020, 05:03 PM
https://www.tremec.com/faqs.php
Q: What type of fluid does TREMEC recommended? (https://www.tremec.com/faqs.php#collapse-1)
A: For all TKO 5-speed models, TREMEC recommends TREMEC HP-MTF, GM Synchromesh™ or Mobil 1 Synthetic ATF. For all other aftermarket models we recommend Dexron III ATF
I believe this is what I went by when purchasing fluid.
Sknh603
10-07-2020, 05:04 PM
I have similar just my issue is that its difficult to get into 1st and sometimes 5th and reverse whike engine on. Engine off shifts into all gears easily. Takes quite the effort to shift into gears whike running. Is that normal for a tko600 to break in or shoukd be smooth right from brand new? Ive bled the system and adjust throwout bearing as well.
Steve
Mine (TKO600) has been smooth from day one. Well, maybe day three. I originally had a hard time getting into reverse, but I think that was just me getting used to it.
Cutter 54
10-16-2020, 05:45 PM
Hey Tim. Give us follow up on the shifter issue. Maybe your problem and solution are something unusual or unique and others can benefit. Good luck.
tbl100
10-17-2020, 01:43 AM
Hey Tim. Give us follow up on the shifter issue. Maybe your problem and solution are something unusual or unique and others can benefit. Good luck.
I don't think there was anything unusual. Just my inexperience showing. Here is how it went:
Every thing seems to be working now. I did a few things. I first opened up the mid shift area and made sure everything was aligned properly. Everything looked good. I then checked the travel of the slave cylinder rod and I was getting 3/4" travel. With the clutch petal fully depressed I was able to get into 1st gear with the engine running and it seemed like the transmission was fully disengaged but trying to get into reverse there was slight grinding but it did go into reverse. This made me think that the clutch wasn't getting fully disengaged. I increase the throw of the clutch petal by adjusting lengthening the master cylinder rod by about 3/16". By doing this it gave me 1.25" of travel in the slave cylinder rod. I can shift thru all gears and reverse now and shifting gears a lot more smooth and consistent. So bottom line is that the clutch wasn't fully disengaging like I had originally thought. I guess my inexperience is showing but I learned a lot. The replies to my post helped me think about different things. One more thing is that there is no play in the clutch and I think there is constant slight pressure on the throw out bearing which means it's spinning all the time. I can give more play by shortening the slave cylinder rod but this may adversely effect the clutch disengagement again. I guess its a balancing act. I'll continue to tweak it but at least for now its shifting fine. I hope this all makes sense.
Thank you to all, Tim
Vspeeds
10-17-2020, 12:48 PM
I’m glad you were able to figure it out and it was a relatively easy fix.