Overview
The ZF 5840.303.150 GEAR SHIFT FORK is a precision-machined actuation component designed to engage and disengage specific gear ratios within the WG100, WG130, and WG131 heavy-duty transmission series. This OEM genuine part, identified by SKU 5840.303.150, slides along the shift rail to move the synchronizer sleeve or clutch hub, directly controlling power flow through the gear train. Located in the upper case section of the transmission, this fork interfaces with the shift mechanism to ensure crisp, reliable gear selection under high-torque conditions. When paired with a properly maintained DIFFERENTIAL assembly, the shift fork contributes to smooth power distribution across the driveline.
Symptoms of Failure
- Hard shifting or gear clash: Worn fork pads or bent fork tines prevent full engagement, causing grinding noises when selecting gears.
- Transmission jumping out of gear: A fatigued shift fork no longer holds the synchronizer in position, leading to unexpected disengagement under load.
- Excessive play in shift lever: Internal wear at the fork pivot point translates into sloppy, imprecise shifter feel inside the cab.
- Metal debris in transmission fluid: Abrasion of the fork against the shift rail or synchronizer hub generates fine metallic particles, contaminating the oil and accelerating wear on the TAPER ROLLER BEARING assemblies.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 5840.303.150 |
| Material | Forged alloy steel, induction-hardened |
| Overall Length | 185 mm (approx.) |
| Fork Pad Width | 12 mm |
| Weight | 0.85 kg |
| OEM Reference | ZF 5840.303.150 |
| Surface Treatment | Phosphate coating for corrosion resistance |
Compatibility
This genuine ZF shift fork is engineered for the WG100, WG130, and WG131 transmission models. It is also compatible with select variants of the WG180 and WG200 series that share the same shift rail spacing and fork geometry. Always verify the fork thickness and pivot pin diameter against your existing unit. For complete driveline restoration, consider inspecting the DIFFERENTIAL and DIFF.HOUSING for wear during the same service interval.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109002 | DIFFERENTIAL | Distributes torque between axles |
| 0750117075 | TAPER ROLLER BEARING | Supports rotating shafts under axial/radial loads |
| 2093209095 | DIFFERENTIAL | Secondary differential for multi-axle configurations |
| 2093309071 | DIFF.HOUSING | Encloses differential gears and bearings |
| 0631100223 | SPRING PIN | Secures shift fork to shift rail |
| 0730300820 | THRUST WASHER | Controls axial clearance in gear stacks |
| 4482360002 | AXLE BEVEL GEAR | Transfers power at 90-degree angle in differential |
| 2097309085 | DIFFERENTIAL AXLE | Carries differential side gears |
| 5838300811 | THRUST WASHER | Reduces friction in planetary gear sets |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Mesh with axle bevel gears for speed differentiation |
Frequently Asked Questions
Q: How do I know if my ZF 5840.303.150 shift fork is worn beyond reuse?
A: Measure the fork pad thickness with a caliper. If it measures less than 10.5 mm (original 12 mm), or if the fork tines show visible bending or cracking, replacement is required. Also inspect the shift rail groove for galling.
Q: Can I replace just the shift fork without removing the transmission?
A: In most WG-series applications, the shift fork is accessible after removing the transmission top cover or side plate. However, full transmission removal is recommended to inspect the synchronizer assemblies and DIFFERENTIAL components for collateral damage.
Q: What torque should be applied to the shift fork retaining bolt?
A: Use 25 N·m for the M8 retaining bolt. Always apply thread-locking compound (Loctite 243) and replace the SPRING PIN with a new unit during reassembly.
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ZF 5840.303.150 GEAR SHIFT FORK – Gear RFQ Support
PartsZF helps B2B buyers source ZF 5840.303.150 GEAR SHIFT FORK with fast RFQ support, expert part-number lookup, documentation review, and export coordination. This gear page is built from confirmed catalog, media, and reference data to reduce sourcing uncertainty for construction machinery transmission parts.
Part-Number Summary
Use ZF number 5840.303.150 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: P.T.O. SHAFT
- Illustration section: KIT P.T.O. SHAFT
Cross Reference Support
If you have an OEM number, old supplier number, or visible marking, include it with your RFQ so PartsZF can compare it with the available records.
Specification Snapshot
| ZF part number | 5840.303.150 |
|---|---|
| Normalized SKU | 5840303150 |
| Part name | GEAR SHIFT FORK |
| Product category | gear |
| Cross-reference support | Available for RFQ review |
| Weight | 0.55 |
Image and Documentation Notes
Current product media status: fallback. Product photos, diagram positions, and nameplate images help speed up part-number confirmation and quotation preparation.
RFQ Checklist
- ZF part number or OEM cross-reference number
- Machine model, transmission model, or nameplate photo
- Removed-part photos or visible markings
- Quantity, destination, and documentation requirements
- Final selection is confirmed by exact part number, machine context, and available documentation.
Related Parts
- ZF 4646.302.128 HELICAL GEAR
- ZF 4143.316.088 PINION
- ZF 4657.302.007 INPUT GEAR
- ZF 4657.354.044 OUTPUT GEAR
- ZF 4644.306.326 GEAR SHIFT HOUSING
