# 3798715 Hydraulic Motor | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta hydraulic motor from the Cooling System group, weighing 11.035 kg and listed for 7 applications across the THD and DH ranges. In a cooling installation this is the motor that drives the fan hydraulically rather than by belt.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta THD102KB
-   Volvo Penta THD102KD
-   Volvo Penta THD102K-KB
-   Volvo Penta DH10A
-   Volvo Penta DH10A 285
-   Volvo Penta DH10A 360
-   Volvo Penta DH10A Rail

-   **Engine Family:** THD, DH

## ⚙️ Key Features

-   11.035 kg
-   Cooling System group
-   7 applications across the THD and DH ranges

## 🔌 Function

Turns hydraulic flow and pressure into rotation to drive the cooling fan at the speed the system calls for.

## ⚠️ Common Signs of Failure

-   Coolant temperature climbing while the fan turns slowly or not at all
-   Whine, growl or knock from the motor under load
-   Hydraulic oil weeping from the shaft seal or casing joints
-   Fan speed not following engine load
-   Hydraulic oil overheating or discoloured

## 🛠️ Service Notes

-   Check the hydraulic oil level, condition and the supply pressure before condemning the motor - low flow gives exactly these symptoms
-   Flush the circuit if the old motor has broken up internally, or the debris will destroy the new one
-   Nut 366934 is listed for the same THD and DH applications and is one of the small fasteners in this area

## 📦 Condition

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

## Details

- **Price:** 4081.88 AUD
- **Vendor:** Volvo Penta
- **Type:** Cooling System
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 4081.88 AUD | In stock |

## Images

- 3798715 Hydraulic Motor | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3798715-hydraulic-motor-genuine-volvo-penta)
> Updated: 2026-10-11