# 20460511 Woodruff Key | Genuine Volvo Penta Part

## 🔧 Product Description

Woodruff key locating the pump drive gear on the shaft and transmitting drive torque without rotational slip.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D5A-B TA
-   Volvo Penta D5A-T
-   Volvo Penta D5A-TA
-   Volvo Penta TD420VE
-   Volvo Penta D7A-T
-   Volvo Penta TAD620VE
-   Volvo Penta TAD650VE
-   Volvo Penta TAD660VE
-   Volvo Penta TAD720VE
-   Volvo Penta TAD721VE
-   Volvo Penta TAD722VE
-   Volvo Penta TAD750VE
-   Volvo Penta TAD420VE
-   Volvo Penta TAD520VE
-   Volvo Penta TAD760VE
-   Volvo Penta MD2010
-   Volvo Penta MD2010B

-   **Engine Family:** D, TD, TAD, MD
-   **HP Range:** Approximately 130-160 HP
-   **Year Range:** Approximately 1998 - 2006

## ⚙️ Key Features

-   Genuine Volvo Penta hydraulic-pump woodruff key
-   Designed for the engine-driven servo-oil / hydraulic pump
-   Direct service replacement for Volvo Penta part number 20460511
-   Woodruff key locating the pump drive gear on the shaft and transmitting drive torque without rotational slip
-   Engine type: 4.0-litre four-cylinder turbocharged industrial diesel

## 🔌 Function

Locks the pump drive gear to its shaft, seating in the shaft's crescent slot and the gear keyway so the drive torque is transmitted positively rather than by friction alone.

## ⚠️ Common Signs of Failure

-   Steering or hydraulic assistance lost suddenly while the engine keeps running
-   Sharp knocking from the pump drive as the gear slips and catches
-   Key found sheared, rolled over or partly extruded from the slot
-   Keyway in the gear or shaft hammered oversize and bell-mouthed
-   Bright metal debris in the pump drive area or in the oil

## 🛠️ Service Notes

-   Confirm thread, length, grade and any single-use restriction against the exact application
-   Clean the threads and use the specified torque, angle and locking method

## 🔄 Supersession & Cross Reference

### OEM / Related Numbers

-   20460510 - servo-oil pump
-   20460512 - Woodruff key, nut retainer and washer
-   20460513 - Woodruff key, nut retainer and washer
-   20460515 - pump camshaft seal
-   20460516 - mounting gasket
-   20460514 - related gasket / service kit
-   20512174 - application drive-gear references
-   20555182 - application drive-gear references
-   20940389 - application drive-gear references
-   20460506 - retaining nut and six-point socket screw
-   20460508 - retaining nut and six-point socket screw

### Other-Brand OEM Numbers

-   VOE20460511 - Volvo Construction Equipment prefixed number format

## 📦 Condition

-   Genuine Volvo Penta part
-   Brand new
-   Supplied in original or equivalent packaging

## Details

- **Price:** 0.99 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 0.99 AUD | In stock |

## Images

- 20460511 Woodruff Key | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20460511-woodruff-key-genuine-volvo-penta)
> Updated: 2026-09-06