Renault Truck Cab Shock Absorber 7421170696 Front Left Suspension Air Spring

Position: Front Left

Renault 7421170696

Volvo 214330900

7421170696 214330900 CB0210

• Abnormal jolt: The cab becomes very stiff, with a strong impact when going over speed bumps or bumpy roads, and a loss of "floating" feel.
• Cabin tilt: When the vehicle is stationary, the cab tilts to one side and cannot remain level.
• Abnormal noise: When jolting or turning, a sound of air leakage (a hissing sound) or metallic friction or clashing can be heard from the rear of the cab.
• Inability to raise or lower: When the cab lift switch is used, the cab will not rise or rises slowly.
• Continuously running the air compressor: The vehicle's air compressor frequently starts to maintain system pressure, indicating a leak.

• Aging and damage to the airbag itself: This is the most common cause. Over time, rubber airbags degrade and crack, eventually leading to leakage or rupture. Inspect the airbag surface for cracks, cuts, wear, or bulges.
• Height control valve malfunction: This valve senses cab height and controls air intake and exhaust. If it is stuck or damaged, the cab may not stay level or experience persistent air leakage.
• Leaking pipes or connectors: The air lines and connectors connecting the air compressor, air reservoir, height valve, and airbag may be loose, aged, or cracked, resulting in system pressure loss.
• Failure of the compressor or dryer: Failure of the compressor and desiccant that supply air to the entire system can lead to insufficient system pressure.
• Mechanical component damage: Damage to the air spring bracket, shock absorber, or stopper can also affect overall performance and potentially cause abnormal wear of the airbag.