CAT 259-4399 is a steel-plastic composite display screen mounting base (including angle adjustment bracket) specifically designed for Caterpillar construction machinery cabs. It’s used to secure multi-functional displays (such as Cat 250 series monitoring screens) in the cab, suitable for medium vibration conditions. Key information is as follows:

Key Parameters
Item Details
Basic Attributes
Model 259-4399, Steel-plastic Composite Display Screen Mounting Base (Integrated Fixture + Angle Adjustment Bracket), Functions: Positioning Installation + Angle Adjustment (Pitch ±15°, Horizontal ±20°), Suitable for Cab Center Console, Withstands Static Load + Medium Vibration, Suitable for Linear Velocity ≤0.05m/s Static Conditions

Suitable Models: Cat 259D3, 279D3, 289D3 and other compact tracked loaders, Suitable for Cat 250 series monitoring displays (such as the 584-5631 display assembly), 1 base per machine, installed on the right side of the cab center console.

Material and Manufacturing Process: The main body of the base is made of Q235 stainless steel. Carbon steel (powder-coated surface, corrosion resistance ≥48 hours salt spray test), adjustment bracket is PA66 nylon + 30% glass fiber, connecting shaft is 45# steel, operating temperature -40℃ to +80℃, no additional lubrication required.

Key Dimensions: Base mounting surface size 120mm×80mm, display mounting hole spacing 75mm×75mm (VESA standard compatible), total height 50mm, adjustment bracket rotation radius 30mm, weight approximately 0.8kg, installation gap 0.05-0.10mm.

Functional Parameters: Rated load capacity ≤5kg, adjustment angle pitch ±15°, left and right ±20°, installation method is bolt fastening (compatible with M6×1.0 bolts), compatible surface roughness Ra≤3.2μm.

Matching Components: Compatible bolts M6×16 (4 pieces), flat washers 6mm (4 pieces), spring washers 6mm (4 pieces), installation requires a Phillips screwdriver, recommended bolt tightening torque. 8-10 N·m Installation and Maintenance Points
**Preparation Before Installation:** Clean the base mounting surface and center console mounting position, removing burrs, oil, and rust; check that the base adjustment bracket is undamaged and the connecting shaft rotates freely; confirm that the display screen mounting hole spacing is compatible with the base.

Installation Steps: Secure the base to the center console mounting position using M6×16 bolts, flat washers, and spring washers to a torque of 8-10 N·m; install the display screen onto the base adjustment bracket and secure it with the matching bolts; adjust the display screen angle to the appropriate position, ensuring it is secure.

Maintenance and Replacement: Every 200 hours, check for loose base fixing bolts and wear on the adjustment bracket; replace the adjustment bracket immediately if cracks appear or the connecting shaft becomes loose; when replacing, it is recommended to replace the bolts, flat washers, and spring washers simultaneously.