+ applicable tax
Your Volvo artic is overheating. The temperature gauge is climbing into the red, the overheat warning is alarming, and the operator is shutting down to avoid engine damage. The radiator looks fine. The coolant level is good. The problem is the hydraulic cooling fan motor — it's either not spinning fast enough, leaking hydraulic oil, or has seized completely. Without the fan pulling air through the radiator and charge air cooler, the truck overheats within minutes under load — especially on hot days, steep grades, or when running fully loaded. The Volvo dealer wants $2,200 to $2,800+ for a replacement fan motor.
We sell the direct replacement for $895.00 — saving you over $1,300 vs the dealer. This is a premium aftermarket fixed-displacement axial piston motor built to the same specification as the factory unit. It features the factory-spec recessed plug-in flange (designed to nest into the fan shroud to save space) and — critically — the integrated anti-cavitation valve that protects the hydraulic system from pressure spikes when the engine shuts down and the fan blades keep spinning. Replaces Volvo part number 15070857 (also listed as VOE15070857).
This is the single most important feature to verify on a replacement fan motor. Here's why:
The cooling fan on a Volvo artic is a large, heavy assembly. When the operator shuts down the engine, hydraulic flow to the motor stops — but the fan blades don't. The mass of the fan acts like a flywheel, continuing to spin for several seconds after shutdown. Without a motor-internal anti-cavitation (freewheeling) valve, this spinning fan creates a suction on the low-pressure side of the motor circuit, causing:
A fan motor without the anti-cavitation valve will blow its shaft seal within days or weeks of installation — turning a $900 repair into a $900 repair plus a contaminated fan shroud, lost hydraulic oil, and a second round of downtime. This motor includes the integrated anti-cavitation valve.
Unlike standard hydraulic motors with bolt-on flanges, the Volvo ADT fan motor uses a plug-in (recessed) flange. The motor body is designed to recess directly into the fan shroud housing, which saves space in the already tight engine compartment and puts the fan blades as close to the radiator core as possible for maximum airflow efficiency. This replacement matches the factory plug-in flange profile — it slides into the shroud and bolts in the same way as the original.
Volvo articulated dump trucks operate in some of the most demanding thermal environments in construction: quarries, mines, road building, and large earthmoving operations. The fan motor runs continuously at high RPM whenever the engine is above idle, and the thermal load increases dramatically under heavy haul conditions. Common failure modes include:
An overheating artic is an immediate shutdown. Running an engine above temperature limits causes accelerated wear on pistons, liners, head gasket, and turbocharger. A single episode of severe overheating can result in a $30,000+ engine repair. Replacing the fan motor the moment symptoms appear is cheap insurance.
The 15070857 / VOE15070857 fan motor fits the following Volvo Articulated Dump Truck models:
⚠️ Verify your Volvo part number (15070857 or VOE15070857) in your parts catalog before ordering. Earlier Volvo ADT models (D-Series, E-Series) may use a different fan motor with different mounting and displacement. Contact us with your truck model and serial number if unsure.
What is the difference between 15070857 and VOE15070857?
They are the same part. "VOE" is Volvo's internal prefix for Volvo Original Equipment. Some catalogs list it with the prefix, others without. If your parts catalog shows either number, this is the correct motor.
Why is the dealer price so high ($2,200+)?
The factory motor is a Bosch Rexroth A10FE Series axial piston motor. Rexroth is a top-tier hydraulic component manufacturer and their products carry premium pricing. The aftermarket has produced functionally equivalent motors at a fraction of the cost. The critical specifications — displacement, flange profile, shaft type, and anti-cavitation valve — are identical.
How do I know if my fan motor is failing vs another cooling issue?
If the fan is visibly spinning slower than normal, making noise, or leaking oil, the motor is the issue. If the fan spins normally but the truck still overheats, check the radiator fins for plugging (mud, debris), the thermostat, the coolant level, and the charge air cooler. A quick test: with the engine at operating temperature, carefully observe the fan — it should be spinning aggressively. If it's barely turning or not turning at all, the motor has failed.
Can I use this on a Volvo excavator?
This motor is specifically for Volvo articulated dump trucks (A25F through A60H). Volvo excavators use different fan motors with different displacements and mounting configurations. Contact us with your excavator model and we can source the correct motor for your machine.
What happens if I keep running the truck with a failing fan motor?
The engine will overheat. Running an engine above its designed temperature range causes: accelerated wear on pistons, cylinders, and liners; head gasket failure; turbocharger bearing failure; and potential coolant leaks into the oil system. A single episode of severe overheating can result in a $30,000+ engine rebuild. The fan motor should be replaced immediately when symptoms appear — it is not a "run it until it completely fails" component.
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