Overview
The ZF 5838.300.620 PINION SHAFT is a critical torque-transfer component engineered for the WG100, WG130, and WG131 transmission series. As the primary input element that meshes with the ring gear, this OEM genuine part converts rotational force from the driveline into differential motion. The SKU 5838.300.620 sits directly within the gearset housing, where it interfaces with the 5838109010: DIFFERENTIAL assembly to ensure smooth power delivery under heavy loads. Precision-ground teeth and case-hardened construction make this pinion shaft a wear-resistant foundation for long-haul industrial applications.
Symptoms of Failure
- Whining or howling noise during acceleration: Worn pinion shaft bearings or damaged gear teeth produce a distinct high-pitched sound, often mistaken for tire noise. This is a classic “bad pinion shaft symptoms” search query.
- Vibration through the chassis at highway speeds: Excessive play in the pinion shaft causes driveline shudder, especially when coasting or decelerating. This “driveshaft vibration ZF transmission” issue worsens over time.
- Oil leaks near the pinion flange: A failing pinion shaft seal or worn bearing surface allows transmission fluid to escape, leading to low lubricant levels and potential gear damage. This “ZF transmission oil leak pinion” condition demands immediate inspection.
- Intermittent gear slipping or clunking: Backlash between the pinion shaft and differential gears creates a delayed engagement or metallic clunk when shifting between forward and reverse. This “ZF WG100 gear slipping” symptom indicates imminent failure.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 5838.300.620 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Weight | 4.2 kg (9.3 lbs) |
| Overall Length | 285 mm |
| Spline Diameter | 38 mm |
| Gear Teeth Count | 14 (spiral bevel) |
| Hardness | 58-62 HRC (case depth 1.2 mm) |
| OEM Reference | ZF 5838.300.620 |
Compatibility
This pinion shaft is specifically designed for ZF WG100, WG130, and WG131 transmissions. It also fits select variants of the WG180 and WG200 series when used with the corresponding 2093209023: DIFFERENTIAL assembly. Always verify your transmission model number before ordering. The shaft works in conjunction with the 0750117075: TAPER ROLLER BEARING for proper preload and alignment. For complete rebuilds, pair this part with the 5838300626: DIFFERENTIAL HOUSING to ensure correct gear mesh and bearing support.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109010 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports pinion shaft radial/axial loads |
| 2093209023 | DIFFERENTIAL | Alternative differential assembly for WG180 |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential and pinion gearset |
| 0631329088 | SPRING PIN | Secures pinion shaft retaining nut |
| 5838300811 | THRUST WASHER | Controls axial clearance in differential |
| 5838300721 | AXLE BEVEL GEAR | Meshes with pinion shaft for final drive |
| 5838300633 | AXLE | Transfers power to wheel hubs |
| 5838300753 | THRUST WASHER | Differential side gear thrust surface |
| 5838300818 | THRUST WASHER | Pinion shaft pilot bearing support |
Frequently Asked Questions
Q: Can I install the 5838.300.620 pinion shaft without replacing the taper roller bearing?
A: It is strongly recommended to always replace the 0750117075: TAPER ROLLER BEARING simultaneously. Worn bearings cause misalignment and rapid pinion gear failure.
Q: How do I identify if my WG100 transmission needs this specific pinion shaft?
A: Check the transmission serial number plate. The 5838.300.620 is used in WG100 units with a 14-tooth spiral bevel pinion. If your unit has a different tooth count, consult the 5838300626: DIFFERENTIAL HOUSING markings for confirmation.
Q: What is the torque specification for the pinion shaft nut?
A: The pinion shaft retaining nut should be torqued to 450-500 Nm (332-369 ft-lbs) after preloading the bearing with a new 0631329088: SPRING PIN installed.
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Phone: +86 158 2286 3467 |
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ZF 5838.300.620 PINION SHAFT – Shaft RFQ Support
For ZF 5838.300.620 PINION SHAFT, send the part number, removed-part photos, and application context so PartsZF can prepare a focused sourcing response.
Part-Number Summary
Use ZF number 5838.300.620 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: DIFFERENTIAL
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 | 5838.300.620 |
|---|---|
| Normalized SKU | 5838300620 |
| Part name | PINION SHAFT |
| Product category | shaft |
| RFQ support | Part-number lookup and documentation review |
| Media support | Product photo or diagram review when available |
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 2094.110.011 P.T.O. SHAFT
- ZF 2094.110.014 P.T.O. SHAFT
- ZF 4642.303.002 OUTPUT SHAFT
- ZF 2093.110.011 P.T.O. SHAFT
- ZF 5838.300.106 INPUT SHAFT
