| 11. | The design was improved in 1953 with the fitting of shock absorbers between the axle boxes and the bogie frames.
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| 12. | The bogie frame is an H-shaped structure of welded construction, with two TE-005 DC traction motors.
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| 13. | SBS Transit has withdrawn affected trains while waiting for the bogie frames found in the undercarriage to be replaced as a precautionary measure.
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| 14. | The traction motors are flexibly supported by the bogie frame, and are connected to the wheelset mounted reduction gears by a multiple disc coupling.
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| 15. | In March 1993, two further underframes were taken and converted to VZZF, for transfer of bogie frames ( without the transferred between gauges.
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| 16. | However, while the bogie frames were transferred, it is thought that the AE cars may have retained their spoked wheelsets ( ? ).
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| 17. | Once uncoupled, one of the carriage ends is left without a bogie at the split, so a bogie frame is required to support it.
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| 18. | The welded bogie frame was derived from Fox's earlier design for Liverpool-Southport electric trains ( later renumbered British Rail Class 502 ).
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| 19. | The axle box guide, which is welded to the bogie frame has a polymer washer ( homopolymer acetal guide ) bush fixed at the head.
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| 20. | The traction motors and gearboxes ( one per axle ) were mounted to the bogie frame and connected to the wheels by a flexibly coupled quill drive.
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