4203877 Original Excavator Rubber Pad for Hitachi EX200

Part number 4203877 is an original rubber pad specially designed by Hitachi for the EX200 series hydraulic excavators (such as EX200-2, EX200-3, etc.). The function is to buffer, seal or cushion, mainly used in parts of the model that require shock absorption, anti loosening or filling gaps, such as engine mounts, frame connections, under cover plates or between various installation brackets. As an original precision rubber component, its inner diameter, outer diameter, thickness, and hardness are fully matched with the operating requirements of the installation position (such as load-bearing capacity and displacement)

This product is a black cylindrical flat pad rubber pad, which is a standard flat cylinder with a precise circular through-hole machined in the center for passing through bolts, pins, or conduits. The material is synthetic rubber that is resistant to oil, aging, and has certain elasticity and compression deformation resistance. The surface in the picture is smooth, the edges are neat, and the hole in the center is precisely processed to ensure alignment during installation. Its core function is to use the elasticity of rubber to absorb vibrations, compensate for tolerances, prevent direct metal contact from producing noise, and have a certain sealing effect when compressed between two metal components. Its operating temperature range is usually suitable for the engine compartment and chassis environment.

Installation specifications: 1 Cleaning: Before installation, the rubber pad (4203877) itself and its upper and lower metal contact surfaces must be thoroughly cleaned with cleaning agent and lint free cloth to ensure that there is no oil stains, rust, or residual old pads. 2. Alignment installation: Place the rubber pad flat in the installation position, ensuring that the center hole is completely aligned with the bolt hole or shaft hole. 3. Uniform compression: Install the metal parts above, then use a torque wrench to tighten the connecting bolts in the specified order and torque value (refer to the maintenance manual for details, usually this type of gasket can be compressed tightly to avoid permanent deformation caused by excessive compression), so that the rubber gasket is uniformly compressed to the appropriate thickness and plays its buffering and sealing role.