Wabco 9140300030 Rotary Vacuum Pump 199cc

Description

The Wabco 9140300030 is a 199cc Rotary Vacuum Pump, essential for generating the vacuum needed to power brake boosters in commercial vehicles. This pump is a critical component within the brake control system, ensuring reliable braking performance. Its rotary design provides consistent vacuum generation across a wide operating speed range of 375 to 3000 (1/min) and is built to OE specification. The pump measures 66 x 116 x 163 mm and features a 3x Ø 7.0 mm mounting configuration, with a port thread of M16 x 1.5. This device operates effectively within a temperature range of -40°C to +155°C and provides a calculated volume of 1.248 with a capacity of 3.8 L.

Key Features & Benefits

This pump basically creates suction. It’s a mechanical device driven by the engine, and its job is to pull a vacuum. It doesn’t create nothing, it just removes air from a sealed system. Specifically, it’s creating the vacuum needed for your power brakes and sometimes for other systems like your cruise control, or even things like the heating and cooling blend doors in some vehicles. Think of it as the heart of your power brake assist system. It works with the master cylinder. When you push the brake pedal, it doesn’t just rely on your leg strength. The pump provides that extra ‘oomph’ by using vacuum to help push on the master cylinder, multiplying your force. It's also used in some vehicles to operate things like the HVAC controls, switching between hot and cold, or directing air flow.

Symptoms, Risks & Replacements

Without a good vacuum pump, your brakes are going to feel really hard to press, especially at lower speeds or when you need to stop quickly. It's like trying to stop a car relying only on muscle power – it’s possible, but it takes a lot more effort and reduces your stopping power. You’ll notice if this pump starts to fail because the brake pedal will feel very firm and require significantly more force to operate. A failing pump can also affect other vacuum – operated systems. You can find a replacement pretty easily – a place like Fixparts Online carries these. It’s a relatively common repair and keeps you safe on the road.

Warranty Information

Wabco Rotary Vacuum Pump 199cc (MPN 9140300030) comes with a 1-year warranty.