Enduring popularity Nissan Almera Classic due to its simplicity of design and unpretentiousness, however, with mileage, owners are faced with characteristic problems in steering. Most often there is a knock, play or leakage, which indicates wear on the steering rack components. Ignoring these symptoms not only reduces driving comfort, but can also lead to critical control failure at the most inopportune moment.
Many car owners immediately turn to specialized services, fearing the complexity of independent work. In fact, the design of the steering mechanism on this model is quite accessible for repair in a garage with a basic set of tools and minimal plumbing experience. Steering rack repair Doing it yourself allows you to not only save a significant amount, but also completely restore the tightness and accuracy of the unit.
Diagnosis of faults and preparation for work
Before starting disassembly, you need to make sure of the diagnosis, since extraneous sounds may come from other elements of the suspension or steering. A characteristic knocking sound when driving over bumps is often confused with problems in the silent blocks of the levers or ball joints. To accurately identify the source of the noise, it is recommended to turn off the engine and rock the steering wheel from side to side while an assistant listens to the area under the hood and underneath the car.
If you hear a metallic grinding sound or feel obvious play in the steering shaft, most likely the rack bushing or gear pair is worn out. Seal leakage manifests itself in the form of oil smudges on the inside of the wheels or on the anthers. In this case, operating the car becomes dangerous, since the lack of lubrication will quickly lead to jamming of the mechanism.
Preparation of the workplace and tools plays a key role in the success of the event. You will need a standard set of sockets, wrenches for unscrewing the driveshaft, a circlip remover, and a specialized tool for adjusting the rack. Don't forget to prepare a container to drain the old oil and a rag to clean up the dirt.
- π οΈ Set of sockets from 8 to 19 mm and ratchet
- π§ Keys for unscrewing steering rods (22 or 24 mm)
- π¨ Hammer and pry bar for removing anthers
- π’οΈ Repair kit for oil seals and retaining rings
β οΈ Attention: Before starting work, be sure to disconnect the negative terminal of the battery to avoid a short circuit when working with electrical wiring or accidental deployment of the airbag.
Removing the steering rack from the car
The dismantling process begins with raising the front of the car on a lift or jacks and placing it on reliable stands. Remove the front wheels to gain clear access to the tie rod ends and bottom of the assembly. Unscrew the lug nuts after loosening the tie rod locknuts to maintain the alignment settings, although this is often not necessary when replacing the rack.
Next, you need to dismantle the driveshaft connecting the steering mechanism to the column. Unscrew the mounting bolts in the lower bracket and carefully separate the shaft, being careful not to damage the splines. Inside the cabin, it may be necessary to loosen the clamp securing the shaft to the steering column if it interferes with the removal of the unit.
Unscrew the bolts securing the rack itself to the subframe. There are usually three or four, depending on the year of manufacture. The rack can be heavy, so it's best to work with two people to carefully remove it through the wheel well or underneath the car. Be extremely careful not to damage the brake hoses and other suspension components when removing them.
- π Disconnect the steering links from the suspension arms
- π© Unscrew the bolts securing the cardan to the rack shaft
- π§ Loosen and remove the bolts securing the rack housing to the subframe
- βοΈ Carefully remove the knot, controlling its weight and position
- Every year
- Once every 3 years
- Only in case of breakdown
- Never checked
Disassembling and cleaning the mechanism
After removing the rack on a workbench, you must thoroughly clean it of dirt and road grease. Use solvents and a wire brush to get to all joints and fasteners. This is critical as dirt can get inside the mechanism during disassembly and cause additional wear.
Remove the boots from both ends of the rail, carefully cutting them if they cannot be repaired. Release the tie rods by unscrewing the lock nuts and unscrewing the ends. Use a puller to remove the ball pins from the swing arms if they are stuck.
Next, remove the protective caps from the ends of the housing and remove the retaining rings. Carefully slide the gear shaft out of the housing. Inner sleeve is often in poor condition, and its replacement is one of the main goals of repair. Wash all metal parts in kerosene and wipe dry.
βοΈ Dismantling of units
β οΈ Attention: When disassembling, do not use a hammer to knock out the rack parts, as this may deform the housing or damage the gear. Use only soft mandrels and a press.
Replacing oil seals and bushings
The main task of repair is to replace worn seals and restore gaps. The seals on the input shaft and at the ends of the gear shaft must be replaced. To do this, use special mandrels or pipes of suitable diameter to carefully press new oil seals into place of the old ones.
Replacing the bushing is the most critical step. An old bushing, usually made of PCB or plastic, wears out over time, leading to backlash. A new bushing often requires bedding in or light grinding to ensure a tight but movable connection to the gear shaft.
Before installing new parts, lubricate them with a quality automotive lubricant, such as Shaeffler or specialized lubricant for steering racks. Apply lubricant to the rack teeth, bushing and seal cavities. This will ensure smooth operation of the mechanism immediately after assembly.
- π’οΈ Install new oil seals using a mandrel
- π§ Replace the worn bushing with a new or reconditioned one
- π§Ό Lubricate all rubbing surfaces generously with specialized lubricant
- π© Check the condition of the retaining rings and replace them if necessary
Lubrication features
The use of unsuitable lubricant can lead to rapid destruction of oil seals and rubber seals. It is recommended to use only lubricants recommended by the manufacturer or specialized steering compounds that are resistant to high loads and temperature changes.
Assembly and adjustment of gaps
Assembly is carried out in reverse order. Make sure that all parts are installed correctly and that the retaining rings are securely seated in their grooves. The tie rods should screw in effortlessly, but with a clear thread feel. Install the anthers so that they do not twist and fit tightly to the body.
A critical step is adjusting the gaps in the gear pair. The rack body usually has an adjusting bolt with a lock nut. By pressing the rack, it is necessary to achieve such a position that the steering shaft moves easily, without jamming, but at the same time there is no play. Correct adjustment is the key to the absence of knocking and long service life of the mechanism..
After adjusting the clearances, tighten the locknut and check the rotation of the shaft in the extreme positions. Make sure the steering wheel does not jam when turned all the way. If the adjustment is made correctly, the mechanism should operate quietly and smoothly.
System installation and testing
Install the repaired rack on the car, observing the reverse removal sequence. Tighten the bolts securing the subframe to the required tightening torque specified in the technical documentation. Connect the driveshaft to the steering column and secure it with bolts.
Reinstall the tie rod ends and tighten the nuts. Connect the battery and check the steering in place. Turn the steering wheel from side to side, making sure there are no extraneous sounds or play. Check the tightness of the connections, especially where new seals are installed.
After installation, it is necessary to perform a wheel alignment, since the position of the steering rods may have changed. Test drive on rough roads to make sure there is no knocking noise. If the knocking noise has disappeared and the steering wheel begins to work clearly, the repair can be considered complete.
| element | Condition | Recommendation |
|---|---|---|
| Oil seals | Wear, cracks | Replacement is required |
| Bushing | Heavy wear | Replacement with a new one |
| Gear shaft | Scratches, wear | Sanding or replacement |
| Anthers | Breaks | Replacing the kit |
| Steering rods | Ball play | Replacing tips |
Adjusting the rack gaps is a balance between the absence of play and ease of rotation; overtightening the bolt is unacceptable and will lead to rapid failure of the mechanism.
Frequently asked questions about repairs
Is it possible to do without replacing the bushing?
Replacing the bushing is highly desirable, since it is the one that holds the gear shaft in the correct position. Without a new bushing, even new seals will not provide a tight seal, and the play will quickly return.
What is the best lubricant for the rack?
It is recommended to use specialized lubricants for steering racks (for example, lithium-based or synthetic), which are not washed out by water and retain their properties at low temperatures. Regular motor oil is not suitable.
Is it necessary to do an alignment after repair?
Yes, after removing and installing the steering rack, as well as when unscrewing the steering rods, the wheel alignment angles are violated. Carrying out a wheel alignment is mandatory to ensure normal handling and no tire wear.
How often should the rack boots be checked?
It is recommended to check the integrity of the anthers at every maintenance or every 10-15 thousand kilometers. A rupture of the boot leads to the entry of dirt and moisture, which kills the mechanism several hundred kilometers away.
Is it difficult to unscrew stuck fastening bolts?
Often the rack mounting bolts become very stuck due to dirt and corrosion. Use penetrating lubricant (WD-40 or similar) in advance, as well as heat the bolts before unscrewing. Use a socket with a short collar for better leverage, but be careful not to strip the threads.