Product Introduction

• Structure: Integrated assembly of high-strength 40Cr alloy steel shaft, precision-forged dual shift forks (for 3/4 gear and reverse gear), and detent positioning mechanism. Shaft is induction-hardened and ground for wear resistance; fork surfaces are precision-machined for precise synchronizer sleeve engagement.

• Performance: Hardened shaft withstands frequent shifting impacts and torsion; dual-fork design ensures accurate actuation of both 3/4 gear and reverse synchronizers; detent mechanism provides stable gear positioning, eliminating gear clash.

Core Function

1. Dual Gear Actuation: Transfers selector force to slide both 3/4 gear and reverse gear synchronizer sleeves, enabling engagement of 3rd, 4th, or reverse gear.

2. Precise Position Locking: Detent mechanism locks shaft in selected gear position, preventing accidental disengagement during heavy load or vibration.

3. Smooth Engagement: Ensures accurate alignment between forks and synchronizer sleeves, eliminating gear clash and reducing component wear.

C-R Gear Shift Fork Shaft Assy AZ2203220101 – SINOTRUK HW Series Gearbox

When your SINOTRUK HW series gearbox demands a reliable high-low range shift, the C-R Gear Shift Fork Shaft Assy AZ2203220101 is the component that keeps everything moving smoothly. Engineered to meet OEM specifications, this fork shaft assembly ensures precise gear engagement, reduced wear, and long-lasting performance under heavy-duty conditions. Whether you are maintaining a fleet or stocking your warehouse, Mettlead delivers this essential gearbox component at factory-direct prices with fast, dependable shipping worldwide.

Key Features and Benefits of C-R Gear Shift Fork Shaft Assy AZ2203220101

Choosing the right gear shift fork shaft assembly directly impacts transmission longevity and driver comfort. Here is what makes the AZ2203220101 stand out:

• OEM-Grade Precision: Manufactured to match original SINOTRUK HW gearbox tolerances, so you get seamless fitment without modifications.
• High-Strength Material: Crafted from hardened alloy steel that resists bending, surface wear, and fatigue cracking—even under extreme torque loads.
• Smooth Shifting Performance: The precisely machined fork and shaft geometry delivers clean, positive engagement across all range positions, reducing driver effort and protecting synchro components.
• Extended Service Life: Surface-hardened contact areas and optimized lubrication channels minimize friction, keeping the assembly operational well beyond standard replacement intervals.
• Drop-In Replacement: Directly replaces part number AZ2203220101 with no special tools or adapters needed, cutting your workshop downtime significantly.
• Strict Quality Control: Every unit undergoes dimensional inspection, hardness testing, and surface finish verification before leaving Mettlead’s facility.

In other words, this fork shaft assembly helps you avoid costly gearbox failures while maintaining the shifting quality your drivers and customers expect.

Application Scenario – Compatible Vehicles and Gearbox Models

The C-R Gear Shift Fork Shaft Assy AZ2203220101 is specifically designed for the SINOTRUK HW series manual transmission. It serves as the high-low range fork shaft assembly, controlling the range shift mechanism within the gearbox. Consequently, it is commonly found in the following applications:

• Gearbox Series: SINOTRUK HW series gearbox (HW15710, HW19710, HW19712, and related models)
• Compatible Truck Models: SINOTRUK HOWO A7, HOWO T7H, SITRAK C7H, and other heavy-duty trucks equipped with HW series transmissions
• Function: High-low range shift fork shaft assembly – engages and disengages the range gear synchronizer sleeve

If your truck runs an HW series gearbox and you are experiencing difficulty shifting between high and low range, a worn or damaged fork shaft assembly is often the root cause. Replacing it with a quality unit like this one restores full shifting precision. For more SINOTRUK HOWO gearbox parts, explore our dedicated catalog.

Technical Specifications

Need to cross-reference this part with your gearbox assembly diagram? Feel free to contact us with your VIN or gearbox nameplate information, and our team will confirm compatibility.

OEM/ODM Capability and Custom Packaging

Mettlead understands that different markets have different requirements. That is why we offer flexible branding and packaging solutions for the C-R Gear Shift Fork Shaft Assy AZ2203220101:

• White-Label Packaging: Receive the product in neutral boxes—ideal for distributors who sell under their own brand identity.
• Custom Packaging: Add your company logo, part number labels, and brand colors to the box and documentation. Minimum order quantities apply.
• Bulk Supply: Ordering large volumes for fleet maintenance or wholesale distribution? We provide tiered factory-direct pricing that keeps your margins healthy.
• Quality Assurance Documentation: Each batch can include inspection certificates, dimensional reports, and material traceability records upon request.

As a result, whether you are a small workshop ordering a single replacement unit or a regional distributor building private-label inventory, Mettlead adapts to your business model. Browse our full range of SINOTRUK HOWO truck parts for more options.

Customer Case Study – C-R Gear Shift Fork Shaft Assy AZ2203220101

A fleet maintenance company in East Africa was experiencing recurring range shift failures across their fleet of 40+ SINOTRUK HOWO A7 trucks. After inspecting the gearboxes, their technicians identified worn C-R gear shift fork shaft assemblies as the primary failure point. Previously, they sourced replacements through a multi-tier supply chain, which resulted in inconsistent quality and long lead times of up to 8 weeks.

After discovering Mettlead, they ordered a trial batch of 10 units of the C-R Gear Shift Fork Shaft Assy AZ2203220101 for their SINOTRUK HW series gearboxes. The parts arrived within 12 days, passed their incoming quality inspection without a single rejection, and performed flawlessly after installation. Within six months, they had placed three repeat orders totaling 85 pieces, reduced their per-unit cost by 22%, and cut average gearbox repair downtime from 4 days to under 2 days.

This is exactly the kind of reliable, cost-effective partnership that Mettlead builds with procurement teams around the world. Explore our full gearbox parts catalog to find every component you need in one place.

Frequently Asked Questions – C-R Gear Shift Fork Shaft Assy AZ2203220101

What does the C-R Gear Shift Fork Shaft Assy AZ2203220101 actually do inside the gearbox?

This assembly controls the high-to-low range shifting mechanism within the SINOTRUK HW series gearbox. When the driver selects a range change, the fork shaft moves the synchronizer sleeve into position, engaging or disengaging the range gear set. If this component is worn or bent, you will notice difficult range shifting, grinding noises, or the range failing to engage entirely.

How do I know if my C-R gear shift fork shaft assembly needs replacing?

Common symptoms include hard or incomplete range shifts, unusual metallic grinding when changing between high and low range, and the gear lever feeling loose or imprecise in the range position. During inspection, look for visible wear grooves on the fork pads, shaft scoring, or any bending of the shaft body. If the fork pad thickness has worn below the manufacturer’s specified minimum, replacement is necessary.

Is this AZ2203220101 fork shaft assembly an exact fit for my SINOTRUK HW gearbox?

Yes. The AZ2203220101 is manufactured to match the original equipment dimensions, material specifications, and tolerances used in SINOTRUK HW series transmissions. It installs directly without any modification. However, if you are unsure about your specific gearbox variant, send us your gearbox nameplate number or VIN and we will confirm compatibility before you order.

What material is this fork shaft assembly made from, and how durable is it?

The assembly is manufactured from alloy steel, with critical contact surfaces undergoing quenching and tempering to achieve HRC 58–62 hardness. This provides excellent resistance to surface wear, bending stress, and fatigue cracking. Under normal operating conditions with proper lubrication, the part meets or exceeds OEM service life expectations.

Can I install this fork shaft assembly myself, or do I need specialist equipment?

If you have experience with gearbox overhaul procedures, this is a straightforward drop-in replacement. You will need to split the gearbox case to access the range shift mechanism, remove the old fork shaft assembly, and install the new AZ2203220101 unit. No special press tools or adapters are required. That said, if your workshop has not performed HW series gearbox work before, we recommend referencing the SINOTRUK service manual for correct torque values and assembly sequence.

What is the minimum order quantity and lead time?

Our MOQ is just 1 piece, which makes it easy to order single replacements or trial units. For standard stock items, lead time is typically 3–7 business days before shipping. Larger batch orders may require 10–15 days for production and quality inspection. We always confirm the exact timeline at the point of quotation.

Get Your C-R Gear Shift Fork Shaft Assy AZ2203220101 – Request a Quote Today

Downtime costs money. Every day your truck sits waiting for a gearbox part is a day of lost revenue. Mettlead keeps the C-R Gear Shift Fork Shaft Assy AZ2203220101 for SINOTRUK HW series gearboxes ready to ship at factory-direct prices—so you can get your fleet back on the road faster.

Here is what happens when you reach out:

1. Send Your Inquiry: Tell us the part number (AZ2203220101), your required quantity, and destination country.
2. Receive a Quotation: Our team responds within 24 hours with pricing, lead time, and shipping options.
3. Confirm and Ship: Once payment is confirmed, we inspect, pack, and dispatch your order promptly.

Ready to secure your supply? Contact us now to get your personalized quote for the C-R Gear Shift Fork Shaft Assy AZ2203220101 and any other SINOTRUK HW gearbox parts you need. We are here to keep your trucks moving.