Board index Flathead Power-Technical Questions, Answers, and Suggestions 45 Flatties trans rebuild on 45

trans rebuild on 45

Post Mon Nov 02, 2009 7:30 pm

Posts: 13
What holds the shifter fork shaft in place on the 45 three bolt transmission?
fogfrank1957@hotmail.com

Post Mon Nov 02, 2009 8:10 pm

Posts: 250
Location: Orlando
A short pin in the sprocket cover presses against the shaft when the SPROCKET cover is installed. Sometimes the pin is missing from the sprocket cover. I Don't know how the things come out because its a tight fit. All hell will break loose if the shaft shakes out.


Brendan

Post Tue Nov 03, 2009 4:21 pm

Posts: 13
Thanks for your reply. I thought so but, my pin location does not line up with the shaft.
fogfrank

Post Tue Nov 03, 2009 4:23 pm
Pa Site Admin

Posts: 6036
Location: Ohio USA

The pin is not directly inline with the shaft. Pa

Post Wed Nov 04, 2009 10:26 am

Posts: 119
Location: England
Thats right - the protruding part of the pin is much bigger in diameter than the end which fits in the hole. Pin just catches part of the shaft to hold it in place.

Post Wed Nov 04, 2009 8:13 pm

Posts: 250
Location: Orlando
I don't know where you are in your rebuild progress but if you search for pa's post
"WLA Trans In Progress"
on this forum you will get every answer you need.
Check it out even if you finished the rebuild.

Post Thu Nov 05, 2009 7:22 pm

Posts: 13
Thanks to everyone that replied to my question. You ALL were a big help.

Post Fri Nov 13, 2009 6:34 pm

Posts: 202
Location: Middle England UK
Brendan wrote:
I don't know where you are in your rebuild progress but if you search for pa's post
"WLA Trans In Progress"
on this forum you will get every answer you need.
Check it out even if you finished the rebuild.




viewtopic.php?f=6&t=10548&st=0&sk=t&sd=a&hilit=TRANS

Post Sat Feb 25, 2017 4:12 pm

Posts: 31
I have a repro sprocket cover with a 3.5mm hole opposite the shifter fork shaft, so I guess that i need to cut a pin (I was thinking a drill bit shank ) to push into the cover and protrude enough to hold the shaft in place, ?

Post Sat Feb 25, 2017 8:38 pm
Pa Site Admin

Posts: 6036
Location: Ohio USA

v8ivor wrote:
I have a repro sprocket cover with a 3.5mm hole opposite the shifter fork shaft, so I guess that i need to cut a pin (I was thinking a drill bit shank ) to push into the cover and protrude enough to hold the shaft in place, ?


That will work but do not cut it to short or to long.

Post Sun Feb 26, 2017 11:28 am

Posts: 18
Hi Frank.

As mentioned, that pin is often missing.
Best solution; bore and tap a small hole in the cover and screw a screw in so the fork-axle won't come loose.
If you want me to, I can take pics of what I mean.
You can see the bolt in my rebuild- thread;

http://s1159.photobucket.com/user/Liber ... z.jpg.html
....Pascal

Post Tue Mar 21, 2017 1:50 am

Posts: 11
Hi folk,

I just received NOS countershaft gear, sadly left bearing diameter is too small for standard
bearing rollers. How can I save this gear?

Jackie

Post Tue Mar 21, 2017 7:03 am

Posts: 648
Location: Wisconsin, USA
Had a similar problem with the last WL trabs I did. It was a replacement gear from Flatland. The customer found a machine shop with a jig grinder had it correctly sized. Cost was around 80 clams.

Post Tue Mar 21, 2017 12:02 pm

Posts: 1189
Location: Ojo Caliente,NM,USA
Last countershaft gear that wasn't sized the same on both ends. I chucked in a four jaw and centered it carefully then reached in with a toolpost grinder and made it the size I wanted. Gears are hardened deep enough for a little grinding.
Dusty

Post Tue Mar 21, 2017 12:37 pm
Pa Site Admin

Posts: 6036
Location: Ohio USA

I agree with the grinding to correct size advices. That cluster gear is hardened clear through.

Post Wed Mar 22, 2017 3:48 am

Posts: 11
And what about lapping?

Post Wed Mar 22, 2017 8:10 am

Posts: 1189
Location: Ojo Caliente,NM,USA
forty_five wrote:
And what about lapping?

If you need more than a few tenths it sure seems like a lot of work. If you have access to a Sunnen not quite so bad!
Dusty

Post Wed Mar 22, 2017 11:29 am

Posts: 18
Lib45 wrote:
Hi Frank.

As mentioned, that pin is often missing.
Best solution; bore and tap a small hole in the cover and screw a screw in so the fork-axle won't come loose.
If you want me to, I can take pics of what I mean.
You can see the bolt in my rebuild- thread;

http://s1159.photobucket.com/user/Liber ... z.jpg.html


As mentioned earlier: the pin that holds the shaft is often missing, causing mayhem when it shifts out...
My solution: bore and thread the cover and insert a small bolt..
This will act as a holder-pin.
You do not have the required permissions to view the files attached to this post.
....Pascal

Post Wed Mar 22, 2017 12:46 pm
Pa Site Admin

Posts: 6036
Location: Ohio USA

What keeps the screw from coming loose ?

Post Thu Mar 23, 2017 12:41 am

Posts: 11
Thanks for your suggestions guys!
First I have to measure bearing diameter.....

Jackie

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