August 10 update - Need help with Williams truck gear

Don:

These gears are relatively easy to replace. Unfortunately, Bachmann no longer has them available.

Several months ago, I discovered Northwest Short Line has comparable gears in stock. I’ve pasted in a link to their website below. You will need to remove the locking collar that retains the shaft the gear is mounted on. This can be accomplished by removing the truck, placing it sideways on two small wood blocks and using a small flathead screwdriver and hammer to tap the shaft through.

Once you have the gear removed, measure both exterior and interior diameters then search on NWSL’s website for the correct size.

I had posted about this several months ago and, if I can find that thread, I’ll post a link here.

Curt

https://nwsl.com/

Found it!

https://ogrforum.com/topic/cra...wbb-worm-gear-update

I do believe that Loctite can effectively re-mount the gear on the shaft. Of course, surfaces have to be clean and all that. Follow the instructions. There are at least 2 "strengths" of Loctite.

@DGJONES posted:

I am helping a friend try to get his early Williams NW2 going after about 20 years as a shelf queen.  It is a dual motored unit (US Army).  Upon disassembly, I discovered the center gear (the one the motor worm turns) in the truck spins on its shaft.  Is this something that can be repaired or are replacement trucks available?

If you look at the worm gear (the one that the worm engages), it's almost certain that it's split.  It's usually not as simple as "gluing" it, it has to be replaced.

The problem part is the small gear inside the truck that is spinning freely on the shaft that turns the gears on the outside of the frame.   The worm gear on the motor is fine.  I thought about the Loctite idea but cannot see how the truck can be disabled to remove the shaft and clean the grease well enough to even try.  I cannot see it well enough to se if it is split or not.

Thanks,

Don

@juniata guy posted:

Don:

These gears are relatively easy to replace. Unfortunately, Bachmann no longer has them available.

Several months ago, I discovered Northwest Short Line has comparable gears in stock. I’ve pasted in a link to their website below. You will need to remove the locking collar that retains the shaft the gear is mounted on. This can be accomplished by removing the truck, placing it sideways on two small wood blocks and using a small flathead screwdriver and hammer to tap the shaft through.

Once you have the gear removed, measure both exterior and interior diameters then search on NWSL’s website for the correct size.

I had posted about this several months ago and, if I can find that thread, I’ll post a link here.

Curt

https://nwsl.com/

Found it!

https://ogrforum.com/topic/cra...wbb-worm-gear-update

Based on Curt’s previous experience, I used the same NWSL gear to repair a Williams Genesis. Not sure but I think most all the Diesels use the same gear. Gear is cheap and shipping is very reasonable. Just search NWSL for Williams.  

https://nwsl.com/search?q=Williams

Pete

@DGJONES, I had the same problem two summers ago and documented the repair in this thread:
https://ogrforum.com/topic/wil...k-worm-gear-question

Note that Frank Timko has since died, and is no longer doing repairs, selling parts, or maintaining his website.

@DGJONES posted:

The problem part is the small gear inside the truck that is spinning freely on the shaft that turns the gears on the outside of the frame.   The worm gear on the motor is fine.  I thought about the Loctite idea but cannot see how the truck can be disabled to remove the shaft and clean the grease well enough to even try.  I cannot see it well enough to se if it is split or not.

Trust me, 95% sure you'll find it's split.

You’re too generous Gunrunner! I’d probably bump that likelihood up to 99.9%…

Curt

Thank you to those who responded.  I checked the gear under a magnifier and you are correct, the gear is indeed cracked.

I have elected to take the easy way out and remove the motor for this truck and make the unit a single motored switcher.  With the single motor, it pulls 7 modern cars without any effort which should be fine for a switcher.

Thank you again for the inputs, I learned a lot from them.

Happy Rsilroading,

Don

Another "home run" for gunrunnerjohn!!!

Peter....Buco Australia.

@DGJONES posted:

Thank you to those who responded.  I checked the gear under a magnifier and you are correct, the gear is indeed cracked.

I have elected to take the easy way out and remove the motor for this truck and make the unit a single motored switcher.  With the single motor, it pulls 7 modern cars without any effort which should be fine for a switcher.

Thank you again for the inputs, I learned a lot from them.

Happy Rsilroading,

Don

Don, by removing the motor you are halfway there to replacing the gear. Remove the sideframes and drive the axle with the gear on it through the frame with a pin punch. Install the new gear and use a C clamp to push the axle back through the frame and loose wheel. No special tools needed.

Pete