CAT 095-4213 SEAT SPRING

CAT 095-4213 (0954213) is the track recoil spring base for the Caterpillar 400GT tracked chassis. It is compatible with heavy-duty equipment such as 349/352/374 excavators and 982/988 loaders. Installed at the junction of the track tension cylinder and the spring assembly, it supports the track tension spring, positions the spring compression stroke, and transmits tension force, ensuring stable tension and cushioning of the track travel system. It is a core load-bearing component of the tracked chassis tensioning mechanism.

Core Parameter Table

Item Details
Part Model CAT 095-4213 (0954213) Track Recoil Spring Base

Type: Track tensioning mechanism core base with positioning boss and mounting flange, compatible with 400GT track tension spring assembly, used with 095-3812 track link and 095-4149/095-4155 retainer

Material: 42CrMo alloy steel, integral forging + tempering heat treatment (hardness HRC34-38), surface Caterpillar yellow primer + wear-resistant coating, resistant to heavy-duty impact, fatigue resistance, and corrosion resistance

Dimensions and Weight: Compatible with 400GT track tension spring, outer diameter approx. 180-200mm, height approx. 80-100mm, mounting flange diameter approx. 220-240mm, unit weight approx. 12-15kg, with a positioning boss precisely matching the spring’s inner diameter.
Compatible with CAT 349, 352, 374 excavators, 982, 988 loaders, etc., compatible with 400GT tracked chassis, and compatible with chassis components such as 095-3609 oil seal retainer and 095-4149 upper fixing device.
Functional positioning: Supports the track tension spring, positions the spring’s compression stroke, and transmits tension force; buffers track impact loads, protects track links, track rollers, and other components, and extends the service life of the track system.
Compatibility and application:
Applicable location: The connection between the front end of the track tension cylinder and the spring assembly. It is fixed to the track frame with bolts, supports the spring assembly, positions its compression stroke, transmits tension force to the track links, and maintains proper track tension.

Application Scenarios: Suitable for heavy-duty working conditions such as mining and infrastructure construction, it withstands the impact and vibration of tracked movement, buffers loads, prevents abnormal wear caused by excessively loose or tight tracks, and ensures stable operation of the tracked walking system.

Core Functions: Supports the tension spring and positions the compression stroke; transmits tension force to maintain stable track tension; buffers impacts, protects chassis components, and extends the service life of the tracked system.

Installation and Maintenance Points:

Installation: Clean the connection surfaces between the base and the track frame/cylinder, ensuring they are free of oil and impurities; tighten the mounting bolts to the original torque (350-400 N·m, refer to the model manual); after installation, check the spring positioning and stroke to ensure the track tension meets requirements.

Maintenance Cycle: Check for base deformation, cracks, and bolt torque every 500 hours; shorten to 200 hours for harsh working conditions such as mining.

Replacement criteria: The base must be replaced if it has cracks, deformation, wear/deformation of the positioning boss, or if it cannot effectively support the spring or transmit tension. Original parts should be given priority to avoid track tension failure, abnormal wear, and other malfunctions caused by dimensional deviations or insufficient material strength.