AUTOOL AST612 · 12V Two-Wheel Pulsating Brake Fluid Bleeder
Bleed Two Wheel Positions on Vehicle Power
AUTOOL AST612 services two wheel positions together with one operator and no mains outlet. AST612 runs from the vehicle’s 12 V battery, delivers fresh brake fluid with pulsating pressure, and collects used fluid in two recovery bottles. Nine adapter types broaden reservoir fit, while automatic pressure release closes the replacement sequence.
- Two-Wheel Simultaneous Service
- 12 V Battery Power
- Two 1.5 L Recovery Bottles
- Nine Reservoir Adapters
- Automatic Pressure Release
Key Features
Pulsating Delivery Without Mains Power
Pulsating Fluid Exchange
Use pulsating pressure to deliver fresh brake fluid to the reservoir at the specified pressure, then drain used fluid from each selected caliper in the prescribed sequence until new fluid flows out. The process can reduce the risk of bubbles compared with basic pressurized filling.
Single-Person Operation
One operator can complete brake-fluid replacement without another person repeatedly pressing the brake pedal.
Direct 12V Battery Power
Connect AST612 directly to the vehicle’s 12V battery; external mains power is not required.
Two-Wheel Service + Two 1.5 L Bottles
Two 1.5L used-fluid bottles allow AST612 to service two wheel positions at the same time when the connections are correct.
Nine Reservoir Adapters
Nine adapter types support many European, American, and Asian vehicle reservoir openings when fitment and the reservoir seal are correct.
Automatic Pressure Release
After replacement is complete, the machine automatically releases pressure to reduce brake-fluid splash risk.
Compact Organized Body
The 268 × 210 × 295mm body weighs about 4.2kg and includes a top carry handle, side filling-hose hook, and rear bottle base to keep the setup organized between work areas.
Visible Pressure + Status
The front panel groups the pressure gauge, indicator lights, and operating buttons for service monitoring and control.
Pressure Monitoring Protection
If pressure cannot be generated or the pump draws in air, the built-in pressure monitor shuts down to help prevent air from entering the brake-fluid reservoir.
3 Years Warranty Support
Main unit: 3-year warranty. Standard accessories: 1-year warranty. Warranty Policy.
Safe Use
Protect 12V Supply, Seal and Fluid Level
Confirm Fitment
Match the exact vehicle, machine interface and supplied configuration before use.
Prime the Fluid Line
Fill the delivery line with the specified brake fluid and remove air before connecting it to the vehicle.
Seal the Reservoir
Choose the matching reservoir adapter and check the cap and hose connections for leaks before building pressure.
Adjust Pressure for the Procedure
Exhausting or changing fluid can also be performed at a lower working pressure by adjusting the pressure and flow-size control.
Protect Painted Surfaces
Brake fluid may damage painted surfaces; clean spills immediately.
Specifications
AST612 Specifications
| Service Method & Capacity | |
|---|---|
| Working Principle | Fully Automatic One-Click Pulsating Oil Change |
| Oil Bottles | 1.5L · 2 Old Oil Bottle1L · 1 New Oil Bottle |
| Number of Brake Calipers | 2pcs |
| Shutdown Pressure Relief Function | 30 Seconds Pressure Relief Time |
| Number of Brake Caliper Changed Simultaneously | Simultaneous Oil Change for Two Wheels |
| Maximum Output Flow Rate | 2.6 L/min |
| Working Pressure Adjustment | Yes |
| Power, Pressure & Connections | |
| Input Voltage | DC12V |
| Working Pressure | 1.5bar-3.0bar |
| Compatible Connectors | 9 Types |
| Pressure Gauge | Yes |
| Mobility & Physical Setup | |
| Product Weight | 8kg |
Manual & Support
Find the Manual and Bleeding Guidance
AUTOOL AST612 User Manual
Open the PDF manual for AUTOOL AST612 12V two-wheel brake-fluid service, adapter selection, pulsating delivery, wheel sequence, pressure release, electrical safety and troubleshooting support.
Package Contents
See What Comes in the Box
- Main UnitAUTOOL AST612 Brake Fluid Bleeder
- Used Brake Fluid Bottles2 × 1.5L recovery bottles
- New Brake Fluid Bottle1L storage bottle
- Power Cable12V battery clamp cable
- Filling Hose3.5m filling hose and related hoses
- Adapters9 types of adapters
- DocumentationUser manual
- PackageCarton box shown in packing image
Buyer Questions
Bleeder Setup, Adapter and Fluid Questions
Does AST612 Need An External Power Source?
No external mains power source is required. AST612 is powered by a DC 12V vehicle battery, so you only need to connect the battery clamp cable to the car battery before operation.
Can AST612 Change Brake Fluid In Four Wheels At The Same Time?
No. AST612 supports simultaneous two-wheel oil exchange. If you need four-wheel simultaneous brake fluid replacement, choose AST618.
Do I Need To Start The Vehicle During Operation?
No. The vehicle does not need to be started during AST612 brake fluid exchange operation.
What Working Pressure Should I Use?
The factory pressure regulator is set to 1–1.5bar to help protect the liquid storage chamber and secondary sealing ring. AST612 working pressure can be referenced around 1.5–3.0bar / 1.5–3kg/cm². Avoid excessive pressure adjustment because it may damage the brake master cylinder.
What Should I Check Before Starting The Oil Change?
Check all connections for leakage, inspect the connecting hose for damage, keep the new oil filler port clean, and confirm that the correct adapter is connected to the brake fluid reservoir. During first use, fill the equipment tubing with brake fluid and bleed air from the tubing; air left in the equipment line can interrupt the exchange.
How Many Adapters Does AST612 Include?
AST612 includes 9 types of adapters to support many European, American, and Asian vehicle models. If you need broader adapter coverage, AST618 includes 17 adapters, and the 17-piece adapter kit is also available separately.
What Does The Pressure Release Function Do?
After replacement, AST612 automatically releases pressure to reduce splashing. Pressure release takes approximately 30 seconds.
Should I Choose AST612 Or AST618?
Choose AST612 if you want a portable 12V two-wheel brake fluid exchanger with 9 adapters. Choose AST618 if you need four-wheel simultaneous brake fluid replacement, 17 adapters, pulse mode and working time settings, 360° wheels, and higher workshop efficiency.
