Steering, Suspension, and Wheel-End Components
This domain covers the parts that keep the truck pointed straight and the wheels attached. Candidates must understand steering gear types, linkage, suspension families, and wheel-end hardware.
Steering
- Steering gears: integral (e.g., worm-and-roller) and linkage-type; match by model and ratio.
- Linkage: tie rod ends, drag links, and pitman arms; thread direction and taper matter.
- Power steering: pump, reservoir, and hoses; fluid specification matters.
Suspension
- Leaf spring and air suspension are the dominant medium-heavy types. Know spring rate, capacity, and mounting (eye-to-eye, slipper).
- Shock absorbers and air springs are matched by capacity and ride height.
- Kits and bushings are wear items; torque-to-yield hardware may be single-use.
Wheel-end
- Hubs, bearings, seals, studs, and lug nuts. Know oil-bath vs. grease-packed hubs and that bearing sets are matched (cup and cone).
- Wheel seals must match hub and spindle dimensions.
Traps in questions
- Mixing left/right threaded tie rod ends.
- Assuming a spring from a similar truck fits - capacity and rate differ.
- Reusing torque-to-yield fasteners.
- Confusing bearing cup and cone part numbers.
Rule of thumb
Match wheel-end parts by spindle and hub dimensions, and suspension by capacity and ride height. Always confirm side (left/right) and thread direction on steering linkage.