CAT 095-6429 RETAINER

CAT 095-6429 (0956429) is a track tensioner retainer for Caterpillar 400GT track chassis. It is compatible with heavy-duty models such as the 349/352/374/395 excavators and 982/988 loaders. It works in conjunction with the 095-6009 piston retainer ring, 095-6034 retaining ball, and 095-5581 spring base. Its core function is to axially lock the tensioner cylinder piston assembly, preventing component displacement under high-pressure conditions and ensuring stable pressure and reliable sealing of the track tensioning system. It is a key locking component of the track tensioning mechanism.

Core Parameter Table

Item Details
Part Model CAT 095-6429 (0956429) Retainer

Type: Track tensioning cylinder axial locking retainer, compatible with 400GT track tensioning cylinder, and matches with 095-6009 piston retainer ring and 095-6034 retaining ball.

Material: 42CrMo alloy steel, overall tempering + surface carburizing and quenching (hardness HRC50-55), surface oxidation blackening/galvanizing passivation, high strength, high wear resistance, and resistance to hydraulic oil corrosion and impact fatigue.

Key Dimensions: Outer diameter approx. 125-135mm, inner diameter approx. 105-115mm, thickness approx. 18-22mm, positioning groove width approx. 8-10mm, clearance with 095-6009 retainer ring ≤0.15mm.

Compatible Models: CAT 349, 352, 374, 395 Excavators, 982, 988 loaders, and other 400GT tracked chassis equipment.

Function: Axially locks the piston assembly of the tension cylinder, preventing piston displacement under high pressure. Works with the retaining ring/fixed ball to ensure cylinder sealing and pressure stability, protecting the tension spring and cylinder barrel.

Compatibility and Application:

Compatible Location: Installed between the piston of the track tension cylinder and the 095-6009 piston retaining ring, axially locking the piston assembly. Works with the 095-6034 fixed ball and 095-6009 retaining ring to lock the axial and radial positions of the piston. Combined with cylinder seals (such as 095-1689 O-rings), it prevents hydraulic oil leakage and ensures stable transmission of tension force to the track.

Application Scenarios: Heavy-duty, high-frequency working conditions such as mining and infrastructure construction, subjected to high-pressure hydraulic oil impact and piston reciprocating loads, preventing piston assembly displacement that could lead to tension failure, excessively loose/tight tracks, and track deviation.

Core Functions: Axially locks the piston assembly, locks the position of the retaining ring and fixed ball, buffers impact loads, protects the cylinder barrel and seals, and extends the life of the tensioning system.

Installation and Maintenance Points

Installation: Clean the surfaces of the retainer and piston assembly, apply hydraulic oil, and install, ensuring a tight fit with the 095-6009 retaining ring and 095-6034 fixed ball without gaps; after installation, check the coaxiality, with an error ≤0.2mm, to avoid uneven wear on the seals.

Maintenance Cycle: Check the retainer for wear, deformation, and cracks every 500 hours. For harsh working conditions such as mining, this period can be shortened to 200 hours.

Replacement Standard: The retainer must be replaced when it is deformed, cracked, the positioning groove is worn, or the clearance with the retaining ring/fixed ball is >0.2mm. Original parts are preferred to avoid positioning failure and cylinder leakage due to dimensional/material deviations.