Information - Stub axle wheel suspension

To understand how the steering knuckle operates in the complex mechanism, it is necessary to understand the following. The car front wheels, which are fixed to the front suspension are needed in order to transfer the engine torque, direct vehicle management, and braking. For the first function - torque transfer - the wheels are connected with the transmission by drive shaft. Concerning the steering knuckle, the wheel hub is fixed on it, and it is also a suspension and steering element. As part of the suspension, it is connected to the Macpherson strut and to the lower arm of the front suspension. Apart from that, the braking system components, such as calipers, are fixed on the knuckle.

Concerning its detailed construction, you should know that the front wheel hub is fixed on the knuckle with two tapered roller bearings. Generally, this part has a quite complicated configuration and is made in most cases of aluminum. This part is manufactured of very durable alloys because of the high load, to which it is submitted. If this item is out of order, the best decision is to go to a car repair center and replace it. If you have had experience in replacing of any parts, you can follow these recommendations.

To replace this part you need to remove the wheel hub together with wheel bearing and mud-reflective shield. After that, you need to pull the pin from the outer tie rod end, and loosen the nut. Using the ball joint puller, remove from the steering knuckle the tie rod end, but very gently, without damaging the ball joint boot. The final step before removing the steering knuckle is the removal from it of the wishbone. You can install the steering knuckle following the instructions in reverse order.

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What you need to know about steering knuckle replacement: lifetime limits, common defects and their signs, tips and recommendations

Service life of the front steering knuckle or the rear stub axle isn’t limited by certain terms. The components are to be replaced in case of stripped thread, wear-out of the hub bearing seat, arm mounting holes, and in case of cracking. The main defect signs of the steering knuckle are wheels free play, car steerability worsening, and increased tyres wear-out.

Necessity to replace the component can be determined only at a service station. For this specialists need to set the car onto a lifting platform, demount a wheel unit, then remove and inspect rear or front steering knuckle.

The left and right steering knuckles of both axles are replaced only at a service station because non-qualified installation of the spare parts enhances risk of emergency situations during driving. The car is set onto the lifting platform and the appropriate wheel is demounted (for example, the right front wheel if the right steering knuckle on the front axle is to be replaced). Then elements of the brake system are disconnected. The nut fastening the drive shaft to the wheel hub is unscrewed, the hub and the protective cover are removed. Then the steering knuckle is disconnected from the lower arm and the tie rod end, the ABS sensor is demounted. After this the defective steering knuckle is removed and a new component is installed.

Steering knuckle at low cost: Top Spares

Stub Axle, wheel suspension Front Axle Left (RIDEX, 1159S0007) -21%
Stub Axle, wheel suspension | RIDEX 1159S0007 Article №: 1159S0007
RIDEX Stub Axle, wheel suspension 1159S0007
£ 92,49
£ 73,07
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Over 100 items in stock
  • Fitting Position Front Axle Left
  • Condition  New
Details
Stub Axle, wheel suspension Front, Right (STARK, SKSAW-2370034) -21%
Stub Axle, wheel suspension | STARK SKSAW-2370034 Article №: SKSAW-2370034
STARK Stub Axle, wheel suspension SKSAW-2370034
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Stub Axle, wheel suspension Rear Axle (GSP, 9499004) -21%
Stub Axle, wheel suspension | GSP 9499004 Article №: 9499004
GSP Stub Axle, wheel suspension 9499004
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  • Mounting bores distance [mm] 66
  • Diameter [mm] 82
  • Thread Size M10x1.25
  • Fitting Position Rear Axle
  • Rim Hole Number 4
  • Condition  New
Details
Stub Axle, wheel suspension Front Axle Left (BUGIAD, BSP20675) -21%
Stub Axle, wheel suspension | BUGIAD BSP20675 Article №: BSP20675
BUGIAD Stub Axle, wheel suspension BSP20675
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  • Paired article numbers BSP20676
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Details
Stub Axle, wheel suspension Front Axle Right (VAICO, V10-3513) -21%
Stub Axle, wheel suspension | VAICO V10-3513 Article №: V10-3513
VAICO Stub Axle, wheel suspension V10-3513
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  • Equipment Variant COBAPRESS
  • Weight [kg] 4,709
  • Product line Original VAICO Quality
  • Packaging width [cm] 25
  • Packaging height [cm] 14
  • Packaging Depth [cm] 60
  • Condition  New
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Stub Axle, wheel suspension Right (FAST, FT13520) -21%
Stub Axle, wheel suspension | FAST FT13520 Article №: FT13520
FAST Stub Axle, wheel suspension FT13520
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Stub Axle, wheel suspension Front, Left (STARK, SKSAW-2370035) -21%
Stub Axle, wheel suspension | STARK SKSAW-2370035 Article №: SKSAW-2370035
STARK Stub Axle, wheel suspension SKSAW-2370035
£ 85,99
£ 67,93
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Stub Axle, wheel suspension Left Front (BUGIAD, BSP20308) -21%
Stub Axle, wheel suspension | BUGIAD BSP20308 Article №: BSP20308
BUGIAD Stub Axle, wheel suspension BSP20308
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  • Fitting Position Left Front
  • Paired article numbers BSP20022
  • Condition  New
Details
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