597-8049: Retainer As

Cat 597-8049 is a dedicated retainer for the Caterpillar DRS 230 series, adapted for the DRS 230 dual-disc torque converter lock-up clutch in heavy-duty powershift transmissions. Its core function is to precisely position and secure the lock-up clutch assembly, ensuring stable torque converter lock-up/unlock operations. Suitable for heavy-duty conditions, key information is as follows:

Core Parameters
Item Details
Type: DRS 230 torque converter lock-up clutch retainer, used for transmission torque converter lock-up mechanisms, providing axial positioning and circumferential fixation of the lock-up assembly, suitable for the power transmission needs of heavy-duty torque converters.

Compatible Models: Cat 980K/L/M loaders, D9T/R bulldozers, 777E/F mining trucks, etc., compatible with DRS 230 torque converter assemblies for Cat C15 and C18 engines, used for torque converter overhauls and lock-up mechanism fault repairs.

Material and Process: Base material: 4140 Alloy structural steel, overall quenching and tempering treatment HRC32-36; Surface: black oxide treatment to enhance rust resistance; Positioning surfaces: precision ground, flatness ≤0.01mm, roughness Ra≤0.8μm, suitable for high-precision assembly requirements.

Key Dimensions: Outer diameter 230mm (9.055 inches), inner diameter 180mm (7.087 inches), thickness 16mm (0.630 inches), bolt hole diameter 12mm (6 evenly distributed), weight approx. 2.2kg (4.85 lbs)

Installation Tolerances: Axial positioning tolerance ±0.02mm, radial runout ≤0.03mm, bolt preload torque 85-95 Nm. N·m, for precise assembly of torque converter housing and lock-up clutch

Functions and Application Scenarios

Core Function: Installed between the torque converter lock-up clutch and housing, it provides a positioning reference and circumferential fixation for the lock-up assembly, ensuring slip-free power transmission when the lock-up clutch engages and smooth disengagement when unlocked. Suitable for heavy equipment with frequent start-stop cycles and sudden load changes, ensuring torque converter transmission efficiency and reliability.

Application Scenarios: Used to replace worn, deformed, or stripped bolt holes of the retainer when torque converter lock-up slips, power transmission efficiency decreases, oil temperature rises abnormally, or shift shocks occur, restoring normal lock-up clutch function. Suitable for replacing internal torque converter components during equipment overhauls/main repairs.

Performance Characteristics: Alloy structural steel base material with heat treatment, combining high strength and toughness, can withstand the impact load during torque converter lock-up, suitable for stable operation under heavy load conditions.

Precision grinding of positioning surfaces and blackened oxide surface treatment reduce assembly clearance and friction loss, improve rust resistance, and extend the service life of the retainer.

Precise dimensional and tolerance control ensures compatibility with lock-up clutches and torque converter housings, reduces vibration and noise, and improves torque converter power transmission accuracy.