19-06-2019, 08:40 PM
Hi
Please those with more knowledge correct me but...
I think that the pre 1931 torque tubes retain the pinion shaft by thrust bearings and a thrust adjusting nut that bears against the pinion flange. That means adjusting the mesh is effected by moving the whole tube closer to or further away from the crown wheel thus necessitating a sliding bearing just behind the pinion gear.
Later torque tube pinions have a threaded portion closer to the crown wheel and are retained by a nut two thirds the way along the shaft. So only this portion of the shaft is moved back and forward by adjusting shims. and the pinion bearing is fixed not sliding.
I'm most familiar with the screw in torque tube where the pinion bearing closest to crown wheel is definitely a sliding fit and can be moved in and out by screwing the tube in or out to mesh properly with the crown wheel.
Hope this helps.
Howard
Please those with more knowledge correct me but...
I think that the pre 1931 torque tubes retain the pinion shaft by thrust bearings and a thrust adjusting nut that bears against the pinion flange. That means adjusting the mesh is effected by moving the whole tube closer to or further away from the crown wheel thus necessitating a sliding bearing just behind the pinion gear.
Later torque tube pinions have a threaded portion closer to the crown wheel and are retained by a nut two thirds the way along the shaft. So only this portion of the shaft is moved back and forward by adjusting shims. and the pinion bearing is fixed not sliding.
I'm most familiar with the screw in torque tube where the pinion bearing closest to crown wheel is definitely a sliding fit and can be moved in and out by screwing the tube in or out to mesh properly with the crown wheel.
Hope this helps.
Howard