Gear change selector question

SDeMocko · #1 08-08-11, 19:09

Hi carrier folks. I think I have run into another unanticipated problem. This is due to not having the original transmission and making use of one that I assume came from some model of truck. I probably should have noticed it a lot earlier but seeing as I was only recently the lucky recipient of most of the gear shift parts, thanks Michael, it didn’t occur to me. You can see in the before pics that a lot of drive line brake stuff was bolted to the right side of the Trans case. I have gone through rebuilt and reassembled the Trans as I received it, but now I notice that the threaded bosses should be on the left side to mount the horse shoe support. I do know that I will have to do something with the gear selector shaft as that is not right either but back to the top hat casting question. Does anyone know if I can reassemble the guts in a mirror image and just rotate the casting around so that threaded bosses are pointing out toward the left? My guess is I’m going to have to source a different style top casting. Thanks for your time in answering my question.

Stephen DeMocko
So Cal, USA
’44 MKII

Marc van Aalderen · #2 08-08-11, 21:26

Hi Stephen,

I do not think this is possible. For one, the holes for the detent balls and springs are on one side only. The chance that you can rotate the shift forks (front to rear) on the rails and the rails in the cover (left to right, to keep the detent slots on the correct cover end) are probably nill. Best thing to do might be to empty the cover and first see if the bolt holes in the case line up. Then try to re-assemble the rest. Best of luck.

Cheers,

Lynn Eades · #3 08-08-11, 21:27

I very much doubt you can reverse it. This top is a later model with the internal reverse spring thing. You shold get the right bit with the correct gear lever etc.

colin jones · #4 09-08-11, 00:07

Morning/evening!! Just a suggestion, if you can't get the correct top, then it would be very easy to simply make a new support for your gear selector. It can always be changed later and it looks all nice and painted and won't be in view after the covers go on.

Colin.

John Mackie · #5 09-08-11, 12:35

Hi all, I have come across several different gearbox tops. Appart from the latch type and the spring loaded one I have seen them with the bosses on the right hand or left hand sides. My Ford Canadia parts book lists BBC 7222 41-45 and C41T 7222 45-47 my Aust carrier parts book lists it as BB 7222 I am shure there must be others. I doubt it will be possible to reverse the housing.
John.

SDeMocko · #6 02-05-12, 00:25

Carrier folks,

I’m not sure anyone had a concern about this other than me but, I did find that a carrier specific gear change hat would bolt up ok to a non carrier trans housing. I know that wasn’t what I had originally been asking about when I started the thread, but it is still good to know info. I know this pic shows a lot of non original stuff going on in my engine bay like the 8BA engine to the wrong color trans and on and on….. Thanks for the loan of the top hat Mike.
I did have one question. Does anyone know what the thread pitch is on the top of the gear select shaft? I have measured it to be 18 tpi but that is a bunch odd so I was looking for conformation. I made up a nice nut ½”BSF but the shaft is not 16pitch. Thanks for the help

PS. I know the nut is listed in the book as 1/2" BSF but the nuts I made using that tap are off.

Stephen DeMocko
’44 MKII
So Cal, USA

Lynn Eades · #7 02-05-12, 09:43

The carriers are built using BSF threads, but the Ford built stuff is still UNF,UNC.
Your gearbox top is post war withe the sprung loaded internal reverse detent.
You can mahe up a plate to bolt on the lid (left side) to support the short end of the gimble. The australian carriers have just that. It bolts on with longer lid bolts, as their gearboxes never had the appropriate cast lugs on the left side.
I can check the gear lever thread, and height from the ball to where the bottom of the gimble sits , if you want.