The rack-and-pinion steering of the TD and TF was carried over from the MG Y-type saloon and offered a precision of steering response significantly superior to the Bishop cam system used on the earlier TC. This same fundamental layout, adopted again on the MGA in 1955, defined the steering character of MG sports cars right through to the end of MGB production. The Steering section covers the three main areas: the steering column and rack assembly, the original-equipment steering wheels, and the aftermarket steering wheels and boss kits available for those wishing to fit a different style.
Steering Column and Rack
The Steering Column and Rack sub-section covers the steering rack assembly itself (available new and on a customer's own unit reconditioned basis, specific to left-hand and right-hand drive), rack overhaul components including pinion bearings, thrust washers, damper components, and ball housings, along with rack gaiter kits, tie rods, track rod end assemblies, and the steering column with its inner and outer tubes, felt bushes, adjustment shaft, and clamping hardware.
OE Steering Wheels
The OE Steering Wheels sub-section covers the original-equipment 17-inch wheel and its restoration components, the original-style centrepiece assembly, retaining nut, key, and screws, for owners restoring a wheel to factory specification.
Aftermarket Steering Wheels and Bosses
The Aftermarket Steering Wheels and Bosses sub-section covers Moto-Lita wood- and leather-rim wheels in 13-, 14-, and 15-inch diameters, walnut-rim alternatives, the boss kits required to fit them to the TD or TF column, and a range of wheel centres including plain aluminium and classic MG-style options.
Steering Production Changes
Three documented production changes affect the TD and TF steering. At chassis TD/11111 (October 1951), the inner tie rod ball housing on the steering rack was redesigned. At chassis TD/25973 (March 1953), a new type of tie rod outer end with improved seals was introduced. At chassis TF/4760 (April 1954), the threads on the tie rod, ball studs, and tie rod greasers changed from BSF to Unified, confirming that early TFs (to chassis 4759) require BSF-thread tie rod and ball stud components, while later TFs (from 4760) require Unified-thread parts.
These chassis-number-dependent items are detailed in the Steering Column and Rack sub-section.
Ordering Considerations
The steering rack and tie rod components require chassis-number identification for the BSF/Unified thread split on the TF. The drive side (LHD or RHD) determines the steering rack specification. Steering wheel selection depends on whether an original-style restoration or an aftermarket alternative is required, with aftermarket wheels needing a brand-specific boss kit to mount to the TD/TF column.