Wabco 4640078140 Leveling Valve

Description

The Wabco 4640078140 Leveling Valve is a critical component used in cabin tilt systems for heavy vehicles. It maintains cabin stability and prevents unwanted movement during operation and transportation. This device ensures a comfortable and safe working environment for the vehicle operator. This leveling valve features an actuating range of -19° to +19° and is designed to OE specification. Its dimensions are 38 x 66 x 207 mm, and it includes mounting provisions for 2 x Ø 8.5 mm bolts. It is fitted with a one-way valve, and a hole lever of Ø 6.5 mm.

Key Features & Benefits

This little guy basically controls the air pressure in your cabin tilt system. It takes the air from your compressor and distributes it evenly to both sides of the cab lifting mechanism. It's got internal chambers and valves that move to keep everything balanced as the cab goes up or down, and it maintains that height once you've lifted it. It also releases air when you lower the cab. Think of it as a crucial part of the whole cab tilting process. It’s how you safely lift and lower the cab for engine work or other repairs under the hood. Without it working right, you’ll have an uneven lift, or it might not lift at all. It works with the compressor and the lifting rams to make the whole system function.

Symptoms, Risks & Replacements

It’s important because uneven lifting can really damage the cab mounts, the chassis, and even the cab itself. You don't want to be stressing parts that aren’t meant to handle that kind of force. A faulty valve acts like a weak link, and it’ll affect how smoothly and safely you can tilt the cab. You’ll notice if it’s failing because the cab lift will be jerky, slow, or one side will be noticeably higher or lower than the other. We actually stock these at Fixparts Online, and a lot of guys find they’re pretty straightforward to replace once they get access to the area. It's a relatively small part, but it does a big job.

Warranty Information

Wabco Leveling Valve (MPN 4640078140) comes with a 1-year warranty.