BGB Quandry

[Horvik 20]

Hello;

In the past I have rebuilt the BGB's on my 3416 H tractors, all with good luck with them.

The problem I have here is I have maybe ten hours on this rebuild job, and it starting to make noises already. All new parts , seals, bearing, gears were used and assembled with care same as the other ones. It kind of resonates with some old time mechanics i knew where sometimes you would just get a case that was bad, and couldn't make the darn thing work. 

Also most manufactures list end play specifications and so on, but never could find this tech data for instance with end play.

 

 

Any help is certainly appreciated.

 

[Bill725 863]

The BGB is designed with "no end play." The gear lash is determined by the machining of the BGB housing and the dimension and tolerance stack up of the internal parts.

Make sure: the driver ball bearing clamp plate is against the ball bearing, 2) the clamp plate screw is tight, 3) the driven gear is against the ball bearing, 2) the ball bearing is against the bore in the housing, 3) the RH seal is against the ball bearing, 4) RH seal shims - install enough thin shims so 1/2 the thickness of the thick shim is sticking out past the side plate machined surface. Bolt on side plate and 5) torque clutch pulley nut to 45-55 Ft-Lbs.

 

[Chris727 1,683]

Did you replace any shafts? There have been a few possible cases lately of shafts possibly not being hardened properly. 

[Horvik 20]

Chris;

No , i didn't replace the driven(cross) shaft but did replace the drive (input) shaft.

[Horvik 20]

Do you happen to know the part number for the ball bearings that are made in the US ?

[PhanDad 3,185]

On 6/19/2022 at 11:11 PM, Horvik said:

Do you happen to know the part number for the ball bearings that are made in the US ?

See this post for info:

https://simpletractors.com/forums/topic/65734-looking-for-crossover-numbers-for-bevel-gear-box-ball-bearings/