Wabco 9700520020 Clutch Servo

Description

The Clutch Servo from Wabco is a hydraulic device used in heavy-duty vehicles to assist the driver in operating the clutch. It is commonly found in trucks, buses, and other commercial vehicles with manual transmissions. This servo utilizes hydraulic pressure to reduce the effort required to disengage the clutch, improving driver comfort and reducing fatigue. It features a bayonet electrical connection adhering to DIN 72585 - A1, and operates within a temperature range of -40°C to +130°C at 12V. With dimensions of 170 x 170 x 317 mm and a stroke of 85.0 mm, it’s designed for reliable, OE-specification performance. It has port threads of M 16 x 1.5, M8 x 1, and a flap exhaust, alongside a push-rod thread of Hole Ø 12.0 mm.

Key Features & Benefits

Basically, this little guy takes the fluid pressure from your hydraulic system and uses it to help push the clutch fork. It doesn’t do the whole job, it just assists. It multiplies the force you give it with the clutch pedal. It operates the clutch release bearing, engaging and disengaging the engine from the transmission. Some systems use it to fully automate the clutch, meaning no clutch pedal at all, but even then, it's still doing that assisting work. Think of it like power steering, but for your clutch. It takes some of the effort out of pushing the clutch, making it smoother and easier, especially in heavy traffic or with a performance clutch. It's part of the overall hydraulic clutch system, working alongside the master and slave cylinders. It really makes a difference in driver comfort and reduces fatigue.

Symptoms, Risks & Replacements

If this thing fails, you’ll notice it pretty quickly. You’ll likely have a really hard time getting the car into gear, or it might not go into gear at all. It can feel like the clutch pedal is incredibly stiff or unresponsive. Sometimes it’ll cause intermittent issues – it might work fine for a while, then suddenly become difficult. It’s a key part of making your car drive smoothly and reliably. You can find them pretty easily these days; I've seen a good selection over at Fixparts Online if you're looking for one. Ignoring a failing clutch servo can put extra strain on other parts of the drivetrain, so it's best to address it when you notice a problem.

Warranty Information

Wabco Clutch Servo (MPN 9700520020) comes with a 1-year warranty.