rookie35

I bought a 1990 f150 302 5 speed project truck and the speedo never worked. The cable was tucked in the frame and I thought perfect, it was just unhooked. Well after cleaning it up and putting a drill on it to test it, I put it back on the BW1345 transfer case. It still don't work. I was thinking maybe the driven gear was wrong kind (yellow). But after feeling the drive gear inside the transfer case it turns freely. I am thinking this should not turn freely, what do you think, Is this an easy fix or do I have to tear the whole transfer case apart just to clip this gear?

5Rangers

You don't have to take apart the case halves, remove the driveshaft and then pull the output shaft housing attached to the back of the transfer case, (5 or 6 bolts # 50 torx I think) a little bit of fluid will come out, but not alot. Inside you'll find the drive gear on the shaft, it's a funky set up but works. The drive gear itself is slotted for a ball bearing that holds it in place so it will be locked and turn with the shaft, you'll find a dimple on the shaft where the ball bearing lives. You might find the ball bearing laying in the housing since your gear isn't held in place. It's all held in place by a clip at the front, which in your case, may not be there. If the teeth on the gear show any wear, replace it, replace the driven gear too, which is the one on the end of the cable.

Might as well replace the seal at the end of the output shaft housing as long as your there. All in all, the whole thing is an easy fix. I did mine in a hour or so.

Just call me Sean

iTrader: (1)

My drive gear was split, which is why the ball bearing wouldn't hold it still.

rookie35

Thanks for the info 5Rangers. And I will check for cracks Sean, so I don't have to do it twice.

rookie35

oo

rookie35

OK, well it's different than I expected. The yoke had to come off and then the drive gear came out with this sleeve. There is no ball bearing spot or any clip spot and the shaft where it rides is smooth. The teeth are for the yoke. The drive gears are wore down in the middle. How can this spin at the same rpm's as the shaft?

rookie35

Another thing is I found the part # and diagram at motivegear.com and it states that it is supposed to be yellow and the one I pulled is green, You suppose some put the wrong one in and that is why it is messed up?

Just call me Sean

iTrader: (1)

Mine's not 4wd, but I thought the transfer case had the same speedo stuff. Your pictures aren't that great.

5Rangers

Looks like the 1345 is definately different from the 1356. The gear is definately worn. I would call Motive and see if they can explain what holds the drive gear in place. I have a factory manual for a 1990, I'll take a look and see what it says.

I know on my past 77 cj5 with a dana 20 had to glue the speedo gear to the shaft with a high quality 2 part epoxy and it was good as long as I owned the jeep.

I believe the color of the gear indicates the number of teeth, this is to correct the speedo for different tire size/gear ratio combinations.

5Rangers

OK, my manual says very little, so no help there. It seems the new gear you get is pressed onto the metal sleeve. I searched around the internet and found this on another site, there's alot of discussion about it when I googled "BW 1345 transfer case speedometer drive gear"

"There is NO ball holding the speedo gear in place like the later model BW 1356, the 1345 uses a steel sleeve that has the speedo gear pressed onto it. What holds the sleeve/speedo gear in place on the output shaft is the pressure of the rear output yoke of the transfer case once torqued to specification."