One-Person Pulsating Brake Fluid Exchange with Gauge-Controlled Pressure
The AUTOOL AST605 pushes fresh DOT3, DOT4 or DOT5.1 fluid into the reservoir in pulses while used fluid drains at one caliper at a time into its recovery bottle, so one technician can do the job without pumping the pedal. Three reservoir adapters are supplied; special reservoir designs need checking before ordering.
- One-Person Operation
- One Caliper at a Time
- DOT3 / DOT4 / DOT5.1
- 3 Reservoir Adapters
- Auto Stop Protection
Key Features
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Pulsating Exchange
Compared with conventional pressure bleeding, pulsed filling helps reduce bubble formation and the need for repeated manual venting.
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Knob and Gauge Pressure Control
A front pressure-adjust knob and gauge let you set and watch working pressure throughout the exchange.
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Automatic Shutdown
The machine stops if pressure cannot be built or the pump draws in air.
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Moisture Filter at the Air Inlet
A water separation filter helps keep moisture in the air from mixing with the brake fluid.
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Stowable Recovery Bottle
The corrosion-resistant used-fluid bottle fits inside the machine body for carrying and storage.
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Reachable Connections
Quick connectors, a hose hook, the gauge and the knob are all on the front of the unit.
Model Comparison
| AST603 | AST605 | AST609 | |
|---|---|---|---|
| Calipers serviced at once | 1 | 1 | 2 |
| Reservoir adapter types | 1 | 3 | 7 |
| Fluid bottles | 1 L used-fluid bottle | 1 L used-fluid bottle | 1.5 L used-fluid + 1 L fresh-fluid bottle |
| Peso | 5.2 kg | 5.3 kg | 7.4 kg |
What’s in the Box
- AST605 brake fluid exchanger
- Power cable
- Filling hose, suction hose and connection hoses
- Used brake fluid bottle
- Reservoir adapters (3 types)
- User manual
How to Use
- Prime before first useFill and bleed the machine’s fluid line with brake fluid so no air reaches the vehicle.
- Raise the vehicleLift it safely so the caliper area is accessible; the engine does not need to run.
- Set up the fresh-fluid sidePlace the suction and pressure-balancing hoses in the new brake fluid bottle.
- Connect the reservoirFit the matching adapter and filling hose to the reservoir and check every connection for leaks.
- Connect the recovery bottleAttach the used-fluid bottle to the bleed screw and loosen the screw.
- Start and monitorSwitch on, long-press START, set pressure on the gauge and watch the fluid levels.
- Empty after serviceDrain all used fluid from the machine; leaving it in can damage the pump.
Pressure adjustment, adapters and troubleshooting: AST605 user manual (PDF).
Good to Know
Caution
- The factory reference working pressure is about 1-1.5 bar. Excessive pressure may damage the master cylinder or other brake parts; raise pressure gradually.
- Use only the brake fluid type specified by the vehicle manufacturer.
- Order the voltage version that matches your workshop supply and check the unit label before connecting.
Care
- Inspect hoses for damage and keep the fresh-fluid filler port clean.
FAQ
Which adapters are included?
Three types, for example #1 for many European, American and Asian brands, #6 for Toyota and #16 for Tesla.
Can it service four wheels at the same time?
No. The AST605 works on one caliper at a time; the AST609 and AST612 handle two, and the AST618 four.
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