Symptoms of a bad rear wheel bearing Nissan Terrano become obvious already in the early stages, when a characteristic hum appears, intensifying with increasing speed. This sound is often confused with tire noise or a malfunction of the transfer case, but when you press the brake pedal, the tone of the hum usually does not change, which is a sure sign of a problem with the suspension.
Ignoring this failure can lead to critical consequences, including wheel jamming in motion or destruction of the hub, which will entail costly repairs to the differential and axle. Crossover owners Nissan Terrano It is necessary to regularly carry out diagnostics of the chassis, especially after off-road operation, where the shock loads on the suspension elements are maximum.
Diagnosis of faults and selection of necessary spare parts
Before you start disassembling the unit, you need to make sure that the problem lies precisely in the bearing, and not in the driveshaft crosspiece or brake pads. To do this, raise the car on a lift or use reliable stands, then spin the rear wheel by hand. If you hear a metallic hum or feel play when the wheel is rocked by the upper and lower edges, the diagnosis is confirmed.
When choosing a new part, it is important to understand the design features of the rear hub Nissan Terrano. Unlike many front-wheel drive cars, it uses a non-separable bearing assembly, which is pressed into the hub or axle. Saving on the quality of spare parts is unacceptable in this case, since cheap analogues often cannot withstand the real loads of off-road use.
- 🔧 Original bearing: the part number usually contains a prefix
40202, provides maximum resource, but is more expensive. - 🔧 High-quality analogues: brands SKF, Koyo, Timken or GMB show excellent results in practice.
- 🔧 Hub kit: sometimes it is more profitable to buy the entire assembly if the old hub has strong signs of corrosion or damage.
Necessary tools and workplace preparation
The replacement process requires a serious approach and the availability of specialized tools. Without a puller to press out bearings, work may take several hours or result in damage to parts. You will also need a reliable jack and safety stands, as safety is paramount when working with the suspension.
Be sure to prepare a penetrating lubricant (such as WD-40 or Loctite 7867) for machining the caliper and hub mounting bolts. The wheel bearing nut is often tightened with enormous force and has a specific lock nut that must be properly cut or unscrewed.
⚠️ Attention: Never try to knock out an old bearing with a hammer directly on its inner race or rollers - this is guaranteed to destroy the internal structure, even if it appears intact on the outside.
Gather all the necessary tools in advance so as not to be distracted while working. You will need sockets of different sizes, a torque wrench, a pry bar, and a brass tipped hammer to safely knock out the pieces.
- 🛠️ Set of heads: from
10to36mm, including socket for hub nut (usually30or32mm). - 🛠️ Puller: hydraulic or screw wheel bearing puller.
- 🛠️ Spanners: for dismantling the caliper and brake disc.
- Complete set of pullers
- Hammer and pry bar only
- I'm planning to rent
- I use the service
Removing the wheel assembly and brake system
Start by loosening the wheel nut before the vehicle is in the air. Use a long wrench to create the necessary leverage to break the nut out of place. After this, lift the rear of the car and place it on secure stands, removing the wheel.
Next you need to remove the brake caliper. Unscrew the two guide bolts holding the caliper and carefully hang it on a wire to the suspension spring so as not to damage the brake hose. Remove the brake disc, first making sure that it is not secured with a screw (on some versions). If the disc gets stuck, use special drifts or gently tap the inside of the disc with a hammer.
⚠️ Caution: Do not press the brake pedal after removing the caliper, as the pistons may extend completely, causing loss of brake fluid and difficulty in reassembling.
Now you need to disconnect the ABS sensor from the hub if it is not integrated into the bearing. Carefully unclip the latch and move the wire to the side. Pay attention to the condition of the wire - when dismantling the hub, it may be damaged if not protected.
- 🔩 Unscrew the bolts securing the caliper bracket if it interferes with removing the hub.
- 🔩 Remove the protective cap from the hub nut, if there is one.
- 🔩 Unscrew the bolts securing the steering knuckle to the shock absorber.
Pressing out the old bearing and preparing the seat
The most difficult step is removing the old bearing. If you are replacing the assembly, you will have to press the hub out of the old bearing, and then the bearing itself out of the steering knuckle. Use the puller applying pressure evenly on both sides. If there is no puller, you can carefully knock out the hub through the spacer, but the risk of damaging the threads or seat is very high.
After removing the bearing, carefully inspect the seat in the steering knuckle. There should be no scoring, corrosion or signs of turning the outer race. If the surface is damaged, it must be cleaned with fine sandpaper or a file, but do not overdo it so as not to disturb the geometry.
☑️ Preparation for pressing
If you are using a press, place your fist on the struts and press the bearing out while applying force to the inner race. If you use a hammer, place spacers only under the outer race to avoid damaging the internal cages.
⚠️ Attention: When pressing the hub out of the bearing, make sure that the force is applied strictly in the center, otherwise the hub may tilt and jam in the tool.
Clean the seat from old grease and rust. Apply a thin layer of copper grease to the outer race of the new bearing to prevent future corrosion. This will also make installation easier the next time you need to change the unit.
Features of the ABS sensor on Terrano
On a Nissan Terrano, the ABS sensor is often a separate element that is inserted into the hub or knuckle. When replacing a bearing, make sure you do not damage the bearing sensing element. Sometimes the sensor comes complete with a new bearing, and sometimes it needs to be replaced from the old unit. Check the integrity of the magnet on the sensor before installation.
Installing a new bearing and assembling the unit
Installation of a new bearing must be done using a mandrel or puller, applying force strictly to the outer race. If you put pressure on the inner race, you can damage the separator and the seal, which will lead to rapid failure of the unit. Make sure the bearing is seated all the way and is level.
After installing the bearing into the fist, it is necessary to press the hub inside the new bearing. To do this, use a mandrel resting on the inner race of the bearing. The blows must be even to avoid damaging the rollers. Pressing requires considerable effort, so be patient.
Before final assembly, apply fresh grease to the inside of the bearing if it is not already filled at the factory. Install a new oil seal, if the design requires one, and make sure it fits tightly.
- 🛠️ Use a torque wrench to tighten the hub nut.
- 🛠️ Check the rotation of the hub - it should be smooth, without jamming.
- 🛠️ Install a new locking pin or lock the nut.
Before final tightening of the wheel nut, check that the ABS sensor is in place and that its wire has not been overtightened when the wheel is moving.
Torque table and technical parameters
Proper tightening torques are critical to the safety and longevity of the assembly. Too little tightening will lead to play and rapid wear, and excessive tightening will lead to bearing deformation and destruction. Always use a torque wrench during assembly.
Below is a table with recommended torque values for the main rear hub fasteners Nissan Terrano. This data is relevant for most modifications with diesel and gasoline engines.
| Fastening element | Tightening torque (Nm) | Tolerance |
|---|---|---|
| Hub nut (M22x1.5) | 157 - 196 | ±10 Nm |
| Caliper mounting bolts | 35 - 45 | ±5 Nm |
| Disc mounting bolts | 8 - 12 | ±2 Nm |
| Wheel nuts | 80 - 100 | ±10 Nm |
| Steering knuckle bolts | 90 - 110 | ±10 Nm |
After tightening all the elements, check the condition of all connections again. Make sure that the ABS sensor is connected and its wire is securely fastened in the brackets to eliminate the risk of breakage when driving over uneven surfaces.
Final inspection and test drive
After assembling the wheel and lowering the car to the ground, it is necessary to perform a control inspection. Check for brake fluid leaks and make sure all bolts and nuts are tight. Start the engine and let the car idle to check for abnormal noise.
The first kilometers of the trip should be spent calmly. Avoid sudden acceleration, emergency braking and driving through deep holes. Listen to sounds coming from the rear axle. If the hum returns or play appears, stop immediately and recheck the tightness of the hub nut.
Correct tightening of the hub nut is the key to long service life of the bearing; if the nut is overtightened, the bearing will overheat and fail after a few hundred kilometers.
If after replacement you hear a creaking or knocking noise, you may have forgotten to lubricate the caliper guides or did not fully install the boot. Carefully examine the assembly points again. Regularly checking the condition of the suspension will help avoid repeated visits to the service center.
Remember that replacing the rear wheel bearing is not only about restoring silence in the cabin, but also guaranteeing your safety on the road. High-quality spare parts and careful work will pay off with long-term and trouble-free operation of your Nissan Terrano.
How do you know when a bearing needs to be replaced?
The main symptom is a hum or howl, which intensifies as speed increases. Wheel play may also appear when you shake your hands. If the noise changes when you turn the steering wheel, the problem may be in the front bearings, but on the rear axle the sound is usually constant.
Is it possible to change a bearing without a puller?
Theoretically it is possible using a hammer and mandrels, but this is extremely risky. There is a high probability of damaging the seat in the fist or breaking the bearing itself during installation. The use of a specialized puller guarantees the quality of work.
Do I need to replace both bearings at once?
If the car has a lot of mileage and one bearing has failed, the second one is most likely in critical condition. Replacing both at the same time will save you time and money in the future, since the job of disassembling the axle is the same for both wheels.
How long does it take to replace one bearing?
For an experienced craftsman with a good tool, replacing one unit takes about 1.5–2 hours. A beginner without experience may need 3-4 hours, especially at the stage of pressing out the old bearing and installing a new one.