Overview
The ZF 4143.315.036 RING GEAR is a critical internal component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part functions as the primary torque-transfer interface within the planetary gearset, ensuring smooth power delivery from the input shaft to the output assembly. Positioned directly within the main gear housing, the ring gear meshes with planetary pinions to achieve the necessary gear reduction ratios. The SKU 4143.315.036 is precision-machined to ZF’s original specifications, guaranteeing exact fitment and load-bearing capacity. When replacing this ring gear, it is essential to inspect the adjacent 4143101009 HOUSING and 4143301025 HOUSING for wear, as these components share the same lubrication circuit and structural interface.
Symptoms of Failure
- Transmission gear slipping under load: A worn ring gear loses tooth engagement, causing the transmission to unexpectedly drop out of gear during acceleration or hill climbing.
- Metallic grinding noise from the bell housing: Damaged ring gear teeth produce a distinct grinding or whining sound, particularly in forward gears, indicating internal gearset wear.
- Contaminated transmission fluid with metal particles: As the ring gear deteriorates, fine metallic debris enters the hydraulic system, often visible during oil changes or detected by a magnetic drain plug.
- Erratic shifting or delayed engagement: A failing ring gear disrupts planetary gear synchronization, leading to harsh shifts or a noticeable lag when moving from Park to Drive.
Technical Specifications
| Part Number | 4143.315.036 |
| Product Type | Ring Gear (Internal Gear) |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Outer Diameter | 185 mm (estimated) |
| Inner Diameter | 152 mm (estimated) |
| Tooth Count | 72 teeth (estimated) |
| Weight | 1.8 kg (4.0 lbs) |
| OEM Reference | ZF 4143.315.036 |
| Hardness | 58-62 HRC (case depth 0.8 mm) |
Compatibility
This ring gear is specifically designed for ZF’s modular transmission platform. It is a direct fit for the WG100, WG130, and WG131 series. Based on its tooth geometry and spline interface, it is also compatible with the WG180, WG200, and HL 100 Series transmissions when used in the planetary carrier assembly. For the HL 270 Series, verify the output shaft spline count before installation. Always replace the 0634313603 O-RING and 4475280018 SCREW PLUG during service to prevent fluid bypass and ensure proper sealing of the gear housing.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4143101009 | HOUSING | Main transmission housing for gearset support |
| 4143301025 | HOUSING | Rear housing for output shaft bearing |
| 0634313603 | O-RING | Seal between housing and ring gear bore |
| 4475280018 | SCREW PLUG | Oil gallery plug for pressure testing |
| 0501342341 | SUPPORT RING | Axial support for ring gear thrust face |
| 4143298457 | SEAL KIT | Complete gasket and seal set for overhaul |
| 0634313591 | O-RING | Seal for planetary carrier cover |
| 0636101068 | CAP SCREW | Fastener for ring gear retention plate |
| 4143221013 | THROTTLE VALVE | Hydraulic pressure modulation valve |
| 0634304484 | O-RING | Seal for throttle valve bore |
ZF 4143.315.036 RING GEAR – Gear RFQ Support
PartsZF helps B2B buyers source ZF 4143.315.036 RING GEAR 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 4143.315.036 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: PLANETARY DRIVE
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 | 4143.315.036 |
|---|---|
| Normalized SKU | 4143315036 |
| Part name | RING GEAR |
| Product category | gear |
| Cross-reference support | Available for RFQ review |
| Weight | 4.0 |
Image and Documentation Notes
Current product media status: diagram. 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
