|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
12-21-2019, 04:29 PM | #1 |
Senior Member
Join Date: Dec 2010
Location: San Jose, CA
Posts: 202
|
Transmission is locked up
Somehow my 1935 transmission is locked up. I may have tried to install the wrong top assembly. I have both a 1936 and a 1934 top assembly along with two different shift levers for them. At this point the transmission will not turn at all. For example it kills the engine if I let out the clutch. The reverse slider moves freely and the gear just behind the shift collar moves a little but the main drive gear and the cluster gear are frozen solid. I would appreciate any suggestions as to how to fix it. Is this a common problem?
|
12-21-2019, 05:08 PM | #2 |
Senior Member
Join Date: Jan 2011
Location: sw minnesota
Posts: 4,543
|
Re: Transmission is locked up
if the input shaft and cluster wont turn, its in high (3rd) gear. you dont say if its in the car or not, if it is something has to allow rotation like either jack up the rear end, or push in the clutch. with the cover off, you should see that the syncro is pushed forward locking the main shaft and input shaft together, the high gear position. slide the syncro back to where its centered between the drive teeth of the two shafts. a slant tower, 34, and a straight tower 36 will not interchange.
|
Sponsored Links (Register now to hide all advertisements) |
|
12-21-2019, 05:53 PM | #3 |
Senior Member
Join Date: May 2010
Location: Solihull, England.
Posts: 8,732
|
Re: Transmission is locked up
Take the top off and have a look inside. If it's killing the motor it would tell you it is in two gears at once.
You will have to investigate. You will need the correct top to match the gears. You may have fitted the correct top but not engaged the forks in the gears correctly. take the top off and manually move the gears to the neutral position. See if that frees up the motor (watch for splashing oil). Mart. |
12-22-2019, 12:39 PM | #4 |
Senior Member
Join Date: Dec 2010
Location: San Jose, CA
Posts: 202
|
Re: Transmission is locked up
It is in the car, the top is off and it is definitely in two gears at once. It is locked up tight. My real problem is how do I free it? Can I cannot get the cluster gear or the main drive gear to move even a little bit. God forbid, do I have to take the transmission out of the car to free it up? I was thinking maybe I can pry the cluster gear back a little to release it. I would really appreciate any suggestions.
|
12-22-2019, 01:12 PM | #5 | |
Senior Member
Join Date: Sep 2011
Location: Christchurch New Zealand
Posts: 1,603
|
Re: Transmission is locked up
Quote:
Phil NZ |
|
12-22-2019, 01:21 PM | #6 |
Senior Member
Join Date: May 2010
Location: Solihull, England.
Posts: 8,732
|
Re: Transmission is locked up
Sponsored Links (Register now to hide all advertisements)
And as above make sure the clutch is fully released. (Pedal down). Mart. |
12-23-2019, 07:44 AM | #7 |
Senior Member
Join Date: May 2010
Posts: 4,725
|
Re: Transmission is locked up
What year are the gears, since much later gears can be put into early cases? How about a photo since you have the top of the transmission off. Look for one or more of the syncro balls in the way locking the syncro hub in position. Use a inspection mirror. Sounds like your locked in 2nd and 3rd since the 1st-R gear moves. You can not move the cluster! Drain the oil to see if there are additional syncro balls in the oil at the bottom of the transmission.
|
12-23-2019, 10:28 AM | #8 |
Senior Member
Join Date: May 2010
Posts: 499
|
Re: Transmission is locked up
You should not be able to lock the trans if the 1st/reverse slider is in Neutral. Take a pry bar and move it to be between the reverse idler gear and the 1st gear (2nd from back) on the cluster
|
12-23-2019, 02:34 PM | #9 |
Senior Member
Join Date: Jun 2010
Location: San Antonio, Texas
Posts: 16,371
|
Re: Transmission is locked up
If the shift tower is off the case, you should be able to move the synchro and get 2nd & high back into neutral. If it's locked in 1:1 drive (high gear) then it locks the input gear to the main shaft which will try to turn the driveshaft. It will also lock the cluster since it's mated at the input drive gear at all times. In low and second gear the cluster is mated either with 2nd or the low/reverse gear and they should be able to slide unless there is a load from the drive shaft as was mentioned earlier. If you get the synchro and low/reverse gear in neutral, it should turn unless the clutch is engaged. If it's all in neutral and it still won't turn, there is a problem in the bearings or fit somewhere.
It's not as easy to work the transmission without the shifter top when the trans is in the car but it should be movable if loads from clutch and rear axle are removed. It always takes a bit of motion to get the stuff to slide more easily. Either shift tower should work as long as it has the early type synchro. If it has the late type synchro, only the vertical towers will work with the 91A type 2nd/High fork installed. The forks can be modified but it takes cutting and welding to get one that will work on the old style angled tower. |
12-23-2019, 05:13 PM | #10 |
Senior Member
Join Date: Dec 2010
Location: San Jose, CA
Posts: 202
|
Re: Transmission is locked up
Thanks everybody for your suggestions. I now remember that the shift tower that was on the transmission originally had been welded at the front internal fork and it is not the one I am trying to use now. Maybe that is the problem. Maybe the internals in the transmission are not 1935 although the main shaft has straight splines. Could the synchronizer collar be a later design??
|
12-23-2019, 05:25 PM | #11 |
Senior Member
Join Date: May 2010
Location: Cincinnati, OH
Posts: 1,356
|
Re: Transmission is locked up
Mosey on over to our website and check out the Transmission Identification link. Lots of pictures and details to help you ID what you have. You could very easily have a mix-match of parts, and they may not be correct for the application.
http://www.vanpeltsales.com/FH_web/f...sID_3speed.htm
__________________
VANPELT SALES LLC Cincinnati, Ohio Office: 513-724-9486 www.vanpeltsales.com www.classictransmission.com |
12-24-2019, 10:17 AM | #12 |
Senior Member
Join Date: Jun 2010
Location: San Antonio, Texas
Posts: 16,371
|
Re: Transmission is locked up
Mac is straight up and being modest as usual. He produced a transmission book that the OP should try to get a copy of. It is a big help with finding out what fits together and what doesn't in all of the early V8 cog boxes.
|
12-24-2019, 06:24 PM | #13 |
Senior Member
Join Date: Dec 2010
Location: San Jose, CA
Posts: 202
|
Re: Transmission is locked up
Thanks to Mac VP and others who have posted on this thread. I just found a big hunk of a broken tooth so I will pull the transmission this weekend and post the pics of what I find when I take it apart.
|
12-24-2019, 07:55 PM | #14 |
Senior Member
Join Date: May 2010
Location: (Not far enough...) Outside of DC
Posts: 3,386
|
Re: Transmission is locked up
I'm so sorry to read that. It's certainly a reason for why your gears were unhappy about turning!
__________________
-Jeff H Have you thought about supporting the Early Ford V-8 Foundation Museum? |
12-25-2019, 04:39 AM | #15 |
Senior Member
Join Date: May 2010
Location: Solihull, England.
Posts: 8,732
|
Re: Transmission is locked up
Did you find an actual broken piece? Or an area on the shaft where the spline looks damaged? Some shafts have an area like that that can fool people into thinking something has chipped out.
Hope you are able to get the problem sorted. Mart. |
12-25-2019, 11:32 AM | #16 |
Senior Member
Join Date: Dec 2010
Location: San Jose, CA
Posts: 202
|
Re: Transmission is locked up
I did find the broken piece. I will post a picture of all of it when I get it apart.
|
12-25-2019, 06:48 PM | #17 |
Senior Member
Join Date: Jun 2010
Location: San Antonio, Texas
Posts: 16,371
|
Re: Transmission is locked up
Broken parts can lock them up for sure.
|
01-01-2020, 09:09 PM | #18 |
Senior Member
Join Date: Dec 2010
Location: San Jose, CA
Posts: 202
|
Re: Transmission is locked up
Here is the bad news. This picture is of the cluster gear. I'm still not exactly sure how this happened but I think I tried to install the wrong top assembly and I got the tranny in two gears at once. BIG PROBLEM! Well, I have a new cluster gear on order and I think I have the correct top assembly now. We'll see.
Jim in San Jose |
01-01-2020, 09:29 PM | #19 | |
Senior Member
Join Date: May 2010
Location: (Not far enough...) Outside of DC
Posts: 3,386
|
Re: Transmission is locked up
Quote:
__________________
-Jeff H Have you thought about supporting the Early Ford V-8 Foundation Museum? |
|
05-05-2020, 12:43 AM | #20 |
Junior Member
Join Date: Jun 2013
Location: Northern CA USA
Posts: 25
|
Re: Transmission is locked up
Hello Mac VP, just reading this article and thread, had a similar issue with my transmission over the weekend in about nine months ago pulling the cover sliding the gears back into place everything seem to function fine. Not sure what’s causing it to get locked up. I see in the pictures/article there’s a detent spring does that put a load on the shift forks? Trying to prevent this from happening again, not fun pulling the transmission case apart on the side of the road
|
Thread Tools | |
Display Modes | |
|
|
Sponsored Links (Register now to hide all advertisements) |
|