AUTOOL AST603 · Pulsating Brake Fluid Bleeder
Run One-Person Pulsating Brake Fluid Service
AUTOOL AST603 is a pulsating brake fluid bleeder for one-person service while used fluid drains at the selected caliper. AST603 connects through a sealed reservoir adapter and protects the service by stopping when fresh fluid runs out or pressure cannot build. The recovery path keeps removed fluid contained during the prescribed wheel sequence.
- One-Person Pulsating Exchange
- 0.5–2.5 bar Working Range
- 1.6 L/min Listed Flow
- Low-Fluid Stop Protection
- Reservoir-Specific Adapter Fit
Key Features
Pulsating Brake Fluid Exchanger with Low-Fluid Protection
One-Button Pulsating Exchange
After preparing the bottle, hoses, reservoir connection, and operating conditions, one person can use the one-button start for the automatic pulsating exchange. The machine’s two sub-pumps work at the same time as it delivers fresh fluid to the reservoir at the specified pressure and releases used fluid at each selected caliper in the prescribed sequence until new fluid flows out.
Intelligent Liquid-Level Monitoring
If the new-fluid container runs out during filling, the built-in monitor stops the machine to help prevent air from entering the brake pipelines.
Corrosion-Resistant Hoses
Flexible oil hoses use corrosion-resistant materials for durable contact with brake fluid and other service chemicals.
Detailed Control Design
A pressure gauge, metal hose fittings, pressure adjustment knob, indicator light, aviation power plug, safety device, and screw-column quick connector support service control and setup.
Reservoir Adapter Fitment
Match the reservoir adapter to the compatible vehicle opening and confirm its seal before service.
Pressure Protection
The pressure monitor detects pressure status and stops the machine if pressure cannot be generated or the pump draws in air, helping prevent air from entering the vehicle brake-fluid reservoir.
3 Years Warranty Support
Main unit: 3-year warranty. Standard accessories: 1-year warranty. Warranty Policy.
Safe Use
Control Reservoir Seal, Pressure and Fluid Level
Default Vehicle Coverage
The AST603 compatibility image lists Benz, BMW, Audi, Skoda, Fiat, Lexus, Land Rover, Jaguar, Porsche, Buick, Ford, Chevrolet, Volvo, Citroen, Volkswagen, Peugeot, Renault, and more.
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.
Brake Fluid Protection
Brake fluid is toxic. Avoid skin and eye contact; wear safety goggles and protective gloves. If fluid contacts skin, wash immediately with water, remove contaminated clothing, and do not carry fluid-soaked cloths in clothing.
Unplug Before Service
Disconnect the power plug before working on the bleeder.
Do Not Open Machine
Do not modify or open the machine.
Inspect Before Every Use
Inspect it before each use, stop if an abnormality is found, and have repairs handled professionally.
Keep Bleeder Dry
Keep the bleeder dry and do not operate it in a damp environment.
Specifications
AST603 Specifications
| Service Method & Capacity | |
|---|---|
| Working Principle | Fully Automatic One-Click Pulsating Oil Change |
| Oil Bottles | 1L · 1 Used Oil Bottle |
| Number of Brake Calipers | 1pc |
| Number of Brake Caliper Changed Simultaneously | Single-Wheel Oil Change |
| Maximum Output Flow Rate | 1.6L/min |
| Working Pressure Adjustment | Yes |
| Power, Pressure & Connections | |
| Input Voltage | AC 110/220 V or DC 12 V — match the selected power configuration |
| Working Pressure | 0.5-2.5bar |
| Compatible Connectors | 1 Type |
| Pressure Gauge | Yes |
| Power Aviation Plug | Yes |
| Mobility & Physical Setup | |
| Product Weight | 5.2kg |
Manual & Support
Find the Manual and Bleeding Guidance
AUTOOL AST603 User Manual
Open the PDF manual for AUTOOL AST603 pulsating brake-fluid exchange, reservoir adapter setup, pressure monitoring, wheel sequence, fresh-fluid protection, used-fluid recovery and troubleshooting support.
Package Contents
See What Comes in the Box
- Main UnitAUTOOL AST603 Brake Fluid Bleeder
- Power CableAviation power plug cable
- Fluid LineFilling hose / fluid line
- BottleUsed brake fluid bottle
- AdapterDefault compatible adapter
- ManualUser manual included
Buyer Questions
Bleeder Setup, Adapter and Fluid Questions
Does AST603 Need Manual Brake Pedal Pressing?
No. AST603 supports one-person operation and does not require repeated manual brake pedal pressing during normal brake fluid replacement.
What Pressure Should I Use?
The operation guide recommends building pressure above 0.6 bar first, then usually adjusting the working pressure to about 2 bar. The AST603 working pressure range is 0.5-2.5 bar.
Why Must The Device Be Bled Before First Use?
The device must be bled before first use so the internal machine tubing is filled with brake fluid. This helps prevent air from entering the braking system during fluid replacement.
How Do I Know The Old Brake Fluid Has Been Drained?
Check the layering and color of the fluid in the waste oil bottle. The darker layer is usually the old brake fluid.
What Is The Correct Shutdown Sequence?
After completing the brake fluid replacement, tighten the wheel cylinder / brake caliper screw first, then turn off the machine. This sequence is important because turning off the machine first may allow air to enter the system.
What If The New Oil Bottle Runs Out During Operation?
The low-fluid monitor stops the machine when the new-fluid bottle runs out, helping prevent air entry. Continue monitoring the bottle during operation: if it empties and the machine keeps running, air may enter the system.
Can AST603 Work With Electronic Power Brake Pumps?
When working with an electronic power brake pump, it is recommended to use the AST603 together with a diagnostic computer.
What Is The Difference Between AST603 And AST605?
AST605 includes two more compatible connectors than AST603, while the other core parameters remain similar.
When Should I Buy The 17-Piece Adapter Set?
Buy the 17-piece brake fluid changer adapter set if the default AST603 adapter does not fit your target vehicle, or if your workshop needs broader compatibility for more vehicle brands.
