Description

Monroe shock absorbers for the rear of the Toyota Avalon (part numbers 72309 and 72310) are specifically designed for the replacement market, addressing the wear that naturally occurs in suspension and other components after covering thousands of kilometers.

These shock absorbers function like oil pumps: a piston attached to the end of the piston rod moves within a pressure tube filled with hydraulic fluid. As the suspension moves up and down, the hydraulic fluid is forced through small holes (orifices) inside the piston. These orifices restrict the flow of fluid, slowing down the piston and consequently dampening the movement of the spring and suspension.

The resistance provided by shock absorbers depends on the speed of the suspension movement and the size and number of orifices in the piston. They are velocity-sensitive hydraulic damping devices, meaning they adjust their resistance based on how fast the suspension moves. This adaptive feature allows shock absorbers to respond to varying road conditions, reducing:

– Bounce
– Roll or sway
– Brake dive and acceleration squat

Shock absorbers operate through fluid displacement during both the compression and extension cycles. Typically, they offer more resistance during the extension cycle, which controls the movement of the vehicle’s heavier sprung weight, compared to the compression cycle that manages the lighter unsprung weight. This dual-cycle operation helps in providing stability and comfort across a range of driving conditions.