The steering shaft assem is the core steering linkage component for HOWO 4X2 tractor trucks. This comprehensive steering shaft assem integrates dozens of precision parts, including the Front beam, Thrust tapered roller bearing, Kingpin, Spring washer, Type 2 hexagon nut M14, Adjusting shim, Elastic snap ring for hole, Grease nipple assembly, Kingpin cap, O-ring seal, Spacer ring, Lock nut-equipped steering knuckle assembly (Left), Kingpin cap assembly, Hexagonal flange bolt M8,
One-way sealing ring, Hexagon thin nut, Hexagon head bolt M18*1.5, Steering tie rod arm (Left), Hex head bolt M20*1.5, Lock nut-equipped steering knuckle assembly (Right), Steering tie rod arm (Right), Steering tie rod assembly, Cotter pin, Name board, Nameplate rivet, and Lubricating grease. Every element of this steering shaft assem is engineered to deliver precise steering response and durability under the most demanding road conditions. When you choose authentic howo Parts, you ensure that your vehicle’s steering shaft assem operates with the reliability and safety that professional drivers depend on. The steering shaft assem is designed to meet the rigorous standards of modern heavy-duty transportation.
The Front beam is the main structural member that supports the entire steering shaft assem. It provides a rigid mounting base for the kingpins, tie rod arms, and steering knuckles. Manufactured from high-strength steel, the front beam absorbs torsional loads and maintains precise alignment between the left and right steering components of the steering shaft assem. Its robust design ensures stable steering geometry even under heavy lateral forces during cornering or rough terrain operation.
The Thrust tapered roller bearing handles axial and radial loads within the steering knuckle pivot of the steering shaft assem. Its tapered rollers provide low-friction rotation while supporting the weight of the front axle. This bearing ensures smooth steering motion and reduces wear on the kingpin and knuckle surfaces within the steering shaft assem. Precision-ground races and high-capacity rollers guarantee long service life even in dusty or muddy operating environments.
The Kingpin is the vertical pivot shaft that connects the steering knuckle to the front axle beam within the steering shaft assem. It allows the wheels to turn left and right while maintaining caster and camber angles. Hardened and ground to exact tolerances, the kingpin withstands repeated impact loads and provides consistent steering feel for the steering shaft assem. Its precise fitment ensures minimal play and accurate wheel alignment over thousands of operating hours.
The Spring washer provides preload and locking function for bolted connections in the steering shaft assem. Its split helical design exerts constant tension on the fastener, preventing loosening due to vibration. Made from high-carbon spring steel, this washer maintains its elastic properties over a wide temperature range, ensuring secure fastening of critical steering shaft assem components throughout the vehicle’s service life.
The Type 2 hexagon nut M14 is a standard metric fastener used to secure various steering linkage attachments of the steering shaft assem. Its hexagon shape allows easy tightening with standard tools, while the M14 thread size provides strong clamping force. Manufactured to grade 8 strength, this nut resists stripping and galling, ensuring durable and reliable connections in the steering shaft assem’s high-stress joints.
The Adjusting shim is used to fine-tune the bearing preload and axial clearance in the steering knuckle assembly of the steering shaft assem. Available in various thicknesses, these precision-ground shims allow mechanics to achieve the exact end-play specification required for optimal steering feel and component longevity of the steering shaft assem. Their accurate dimensions ensure consistent adjustment across production runs.
The Elastic snap ring for hole is a retaining ring that fits into a groove inside a bore to secure bearings or other components axially within the steering shaft assem. Its spring-like action allows easy installation and removal using snap ring pliers. Made from high-strength carbon steel, this snap ring withstands thrust loads and prevents unintended disassembly of rotating parts within the steering shaft assem.
The Grease nipple assembly (BM8*1 D71412 ZN) provides a convenient lubrication point for the steering shaft assem’s moving joints. Its BM8*1 thread fits standard grease guns, allowing regular maintenance to reduce friction and wear. The zinc-plated finish resists corrosion, while the ball-check valve prevents dirt ingress, ensuring that clean grease reaches the bearing surfaces of the steering shaft assem.
The Kingpin cap is a protective cover that encloses the upper end of the kingpin and thrust bearing within the steering shaft assem. It seals the internal components against dirt, water, and debris while retaining the lubricant. The cap also provides a preload adjustment surface for the kingpin bearing of the steering shaft assem. Its robust casting ensures dimensional stability and long-term durability in severe service conditions.
The O-ring seal is a circular elastomeric gasket that provides static sealing between mating surfaces in the steering shaft assem. Its compressed cross-section fills the gap, preventing lubricant leakage and blocking external contaminants. Made from oil-resistant nitrile rubber, this O-ring maintains its sealing integrity across a broad temperature range and in the presence of petroleum-based greases, protecting the steering shaft assem.
The Spacer ring is a precision-machined sleeve used to maintain proper axial spacing between components in the steering knuckle assembly of the steering shaft assem. It ensures correct bearing positioning and prevents metal-to-metal contact under load. Manufactured from hardened steel, this ring provides a durable bearing surface and contributes to the overall rigidity of the steering shaft assem.
The Lock nut-equipped steering knuckle assembly (Left) is a complete left-side steering joint that connects the wheel hub to the front axle as part of the steering shaft assem. It incorporates a tapered roller bearing, kingpin, and a lock nut that secures the bearing preload. This pre-assembled unit simplifies installation and ensures correct adjustment out of the box, reducing setup time for maintaining the steering shaft assem.
The Kingpin cap assembly combines the kingpin cap with an integrated seal and retaining hardware for the steering shaft assem. This modular unit provides a complete closure for the kingpin bore, ensuring consistent sealing and lubrication retention. The assembly is factory-tested for leak-tightness and comes ready for bolting onto the steering knuckle, reducing assembly complexity of the steering shaft assem.
The Hexagonal flange bolt M8 with pre-coated locking layer features an integral washer flange and a nylon patch that provides self-locking action within the steering shaft assem. This bolt is used in high-vibration areas of the steering system, where standard fasteners might loosen. The pre-applied locking layer ensures consistent clamping force without the need for liquid threadlockers, simplifying assembly processes of the steering shaft assem.
The One-way sealing ring is a directional seal that allows lubricant to flow in one direction while blocking reverse flow and contamination within the steering shaft assem. Installed in the steering knuckle cavity, it maintains positive pressure and prevents grease from leaking past the bearing. Its unique lip design ensures effective sealing even under dynamic motion and pressure fluctuations, preserving The part.
The Hexagon thin nut is a low-profile fastener used in confined spaces within The part. Its reduced height allows it to fit where a standard nut would interfere with adjacent components. Despite its thin profile, this nut provides adequate thread engagement and clamping force for light to medium loads, often used as a jam nut for locking purposes in The part.
The Hexagon head bolt M18*1.5 is a heavy-duty fastener used to secure major steering components like the tie rod arms and steering knuckle brackets of The part. Its coarse metric thread provides strong grip, and the hex head allows high-torque tightening. Made from high-tensile steel, this bolt withstands shear and tensile loads encountered during aggressive steering maneuvers, ensuring the integrity of The part.
The Steering tie rod arm (Left) is the left-side lever that connects the tie rod to the steering knuckle within The part. It transmits lateral forces from the tie rod to the knuckle, enabling wheel turning. Forged from high-strength steel, this arm is designed to withstand bending and twisting loads while maintaining precise angular geometry for accurate steering response of The part.
The Hex head bolt M20*1.5 is another large-diameter fastener used for critical mounting points such as the steering gear bracket or front axle attachments of The part. Its robust shank and fully threaded design provide high clamping force, while the fine pitch allows precise torque control. This bolt is essential for maintaining the structural integrity of The part under heavy dynamic loads.
The Lock nut-equipped steering knuckle assembly (Right) mirrors the left-side unit but is designed for the right wheel of The part. It includes the same tapered bearing, kingpin, and lock nut arrangement, ensuring symmetrical steering geometry. This pre-adjusted assembly simplifies replacement and guarantees correct bearing preload, reducing the risk of premature wear on the right side of The part.
The Steering tie rod arm (Right) is the right-side lever that transfers steering input from the tie rod to the right knuckle within The part. Together with the left arm, it ensures coordinated wheel movement. Manufactured to the same high standards, this arm provides balanced steering feel and equal turning angles for both wheels, contributing to stable vehicle handling of The part.
The Steering tie rod assembly (diameter 501651, maintenance free) is a sealed, pre-lubricated unit that connects the left and right steering arms of The part. Its maintenance-free design eliminates the need for regular greasing, reducing service intervals. The assembly features durable ball joints and a robust tube, providing precise and responsive steering with minimal play over its long service life, enhancing The part.
The Cotter pin is a small but vital locking device that secures castellated nuts in the steering linkage of The part. Its split ends are bent after insertion to prevent the nut from backing off under vibration. Made from mild steel, the cotter pin provides a simple yet reliable mechanical lock for critical fasteners, enhancing the safety and reliability of The part.
The Name board is a metal identification plate attached to The part. It displays critical information such as part numbers, production batch, and manufacturer details. This board aids in traceability and ensures that the correct replacement parts are sourced during maintenance of The part. Its permanent marking withstands corrosion and abrasion.
The Nameplate rivet GB/T 12618.1 2.4 x 6 is a small blind rivet used to attach the name board to The part. Its compact 2.4mm diameter and 6mm length provide secure fastening without damaging the surrounding material. Made from aluminum or steel, these rivets offer reliable permanent attachment that resists vibration and weathering, securing the name board to The part.
The Lubricating grease is a high-performance lithium-based grease specially formulated for automotive steering applications, including The part. It provides excellent anti-wear and extreme-pressure properties, reducing friction and preventing galling in the kingpin and bearing interfaces. The grease maintains its consistency across a wide temperature range and resists water washout, ensuring long-lasting protection of all moving parts within The part.
Steering shaft assem – Complete Steering System Kit for HOWO 4X2
| Material Encoding | Name |
|---|---|
| AZ400741710021 | Front beam |
| AZ400741710005 | Thrust tapered roller bearing |
| WG4071415005 | Kingpin |
| Q40314 | Spring washer |
| ZQ360B141T13F2 | Type 2 hexagon nut M14 |
| WG4005415521 | Adjusting shim |
| Q43058 | Elastic snap ring for hole |
| AZ9003963031 | Grease nipple assembly (BM8*1 D71412 ZN) |
| WG4005415316 | Kingpin cap |
| AZ9003070034 | O-ring seal |
| AZ4071410052 | Spacer ring |
| AZ4071415015 | Lock nut-equipped steering knuckle assembly (Left) |
| AZ4071415024 | Kingpin cap assembly |
| ZQ1840816S | Hexagonal flange bolt M8- pre coated locking layer |
| WG4005416508 | One-way sealing ring |
| Q351B141T15 | Hexagon thin nut |
| ZQ151B1855TF2 | Hexagon head bolt M18*1.5 |
| AZ4071415051 | Steering tie rod arm (Left) |
| ZQ151B2080TF6 | Hex head bolt M20*1.5 |
| AZ4071415016 | Lock nut-equipped steering knuckle assembly (Right) |
| AZ4071415052 | Steering tie rod arm (Right) |
| AZ400743710002 | Steering tie rod assembly (diameter 501651, maintenance free) |
| Q5006370 | Cotter pin |
| AZ400741001001 | Name board |
| AZ9003900067 | Nameplate rivet GB/T 12618.1 2.4 x 6 |
| 190007380213 | Lubricating grease |
The part is engineered for precise control and immediate feedback. Every component, from the kingpin to the tie rod assembly, works in harmony to eliminate play and deliver linear steering feel. This precision translates to safer highway driving and more manageable low-speed maneuvers with The part.
All parts of this steering shaft assem are manufactured from high-grade materials with protective coatings to resist corrosion and wear. The inclusion of pre-lubricated bearings and maintenance-free tie rod reduces routine service needs, while the comprehensive kit ensures you have every required component for a complete overhaul of the steering shaft assem.
With pre-assembled steering knuckle units, color-coded shims, and all necessary fasteners included, this steering shaft assem reduces installation time significantly. The clear documentation and standard hardware ensure that even less experienced technicians can perform a reliable replacement of the steering shaft assem.
This steering shaft assem is compatible with all HOWO 4X2 models sold worldwide. Replacement parts for the steering shaft assem are readily available through our global distribution network, and our technical team provides prompt assistance for any installation or service queries.
The steering shaft assem has been developed through extensive finite element analysis and real-world testing on HOWO 4X2 trucks operating in diverse conditions – from highway long-haul to off-road construction sites. The robust front beam and hardened kingpins withstand the high lateral forces generated during heavy cornering, while the thrust bearings manage both vertical and horizontal loads with minimal friction, ensuring the steering shaft assem delivers consistent performance.
Sealing is a key strength of this steering shaft assem. The O-ring seals, one-way sealing ring, and grease nipples work together to keep lubricant in and contaminants out, significantly extending component life. The use of pre-coated locking bolts and spring washers further ensures that all fasteners remain tight even under severe vibration, reducing the risk of unexpected loosening in the steering shaft assem.
Each steering shaft assem kit is subjected to rigorous quality checks at every production stage. Bearing preload is verified using precision gauges, thread tolerances are inspected, and every seal is leak-tested before packing. We also perform random destructive tests on sample units to confirm material strength and fatigue life, ensuring that every steering shaft assem meets our strict durability targets.
With over a decade of experience in supplying steering components for HOWO vehicles, we have refined the design to minimize common failure points such as bearing seizure, pin wear, and seal leakage. The result is a steering shaft assem that not only meets but exceeds OEM performance specifications, giving fleet operators peace of mind.
By choosing this complete steering shaft assem, fleet operators can reduce procurement complexity and inventory costs. Instead of sourcing dozens of individual parts separately, this all-in-one kit provides everything needed for a full steering system rebuild. The extended service intervals and reduced downtime directly contribute to lower operating expenses and higher vehicle utilization with the steering shaft assem.
Moreover, the maintenance-free tie rod assembly eliminates the need for periodic greasing, saving on labor and lubricant costs over the vehicle’s lifespan. The included lubricating grease is already applied to critical interfaces, so your workshop does not need to purchase additional specialty grease for the steering shaft assem.
The steering shaft assem is the ultimate solution for maintaining or restoring the steering performance of your HOWO 4X2 tractor. With its comprehensive parts list, precision engineering, and durable construction, this kit ensures that your vehicle handles safely and predictably in all conditions. Invest in the steering shaft assem today and experience the difference that genuine HOWO quality brings to your operations.
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