Description
CAT 394-0197 TRUNNION-GD
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The CAT 394-0197 YM (Yellowmark) bracket is an aftermarket positioning and mounting bracket from Caterpillar, designed to fit the hydraulic lines, sensors, or small actuators of loaders and excavators. It is used for rigid fixation and positioning under vibration conditions. The following is professional structured information from Cat® Parts.
Core Technical Parameters (Professional Version)
Project Details
Basic Attributes
Model 394-0197 YM, Yellowmark aftermarket part, single weight 0.85 kg, 1–2 pieces per unit, material Q345B low alloy structural steel (yield strength 345 MPa), surface electrophoretic black (salt spray resistance ≥96 h), compatible with M10×1.5 bolts (torque 35–40 N・m)
Key Dimensions
Mounting hole spacing 80 mm × 60 mm (double hole), plate thickness 8.0 mm (tolerance ±0.2 mm), bracket height 55 mm, support arm length 120 mm, positioning groove width 15 mm (compatible with φ14–φ16 mm pipes/wiring harnesses), mounting surface flatness ≤0.15 mm
Material and Process
Main body is Q345B steel plate laser cutting + bending forming, full welding at the weld (weld leg height 5 mm), no porosity / Cracks, surface electrophoretic coating thickness 20–30 μm, mounting hole chamfer C1.5 mm, edge deburring (Ra≤3.2 μm)
Performance Parameters: Rated load: static load 8 kN, dynamic load 3 kN, operating temperature -40℃ to +120℃, vibration tolerance 10–2000 Hz (acceleration ≤5 g), suitable for hydraulic circuit/sensor installation on Cat 320GC/323GC excavators and 950M/966M loaders.
Compatible Models: Excavators 320GC/323GC, loaders 950M/966M, used for main valve return pipe fixing, pressure sensor installation, pilot lead harness bracket, compatible with Cat 4W-7000 gaskets and M10 locknuts.
Installation and Maintenance Points: Clean the mounting surface before installation, check the bracket for deformation/cracks, ensure the mounting hole and bolt clearance is 0.1–0.2 mm, press with a torque wrench. Tighten M10 bolts to 35–40 N·m, adding flat washers and spring washers to prevent loosening.
Positioning Requirements: After the conduit/wiring harness is installed in the positioning slot, secure it with a φ16 mm clamp (torque 8–10 N·m), ensuring no interference. For vibration conditions, add an additional 5 mm thick anti-vibration rubber pad.
Maintenance Requirements: Check bolt torque and coating integrity every 500 hours. If the coating is damaged, apply epoxy primer to prevent corrosion.
Troubleshooting: If loosening/abnormal noise occurs, check for loose bolts or deformed brackets. Replace the bolts and straighten the brackets; replace with new parts if necessary.
