Titan part 779-046 is a radius block designed for the guidance or steering system on compatible Titan PowrLiner 8900, 8900 XLT, 8900 XLT SP, 6950, 6900 XLT, 6900 XLT SP, 4950, 4900, and 4900 XLT stripers. This block provides a smooth bearing surface for curved or pivoting components, ensuring accurate tracking and consistent line striping. Replacing a worn, cracked, or missing radius block restores proper steering alignment, reduces play, and improves overall machine maneuverability.
| Part Number | 779-046 |
|---|---|
| Part Description | Block, Radius |
| Brand | Titan |
| Fits | PowrLiner 8900, 8900 XLT, 8900 XLT SP, 6950, 6900 XLT, 6900 XLT SP, 4950, 4900, 4900 XLT |
| Condition | New |
The Titan 779-046 Radius Block is a precision guide component used in the steering linkage or radius rod assembly on large PowrLiner stripers. It provides a durable, low‑friction contact surface that allows the machine to pivot smoothly during turns while maintaining consistent tracking for straight‑line striping.
Over time, radius blocks can wear flat, crack, or become loose from vibration. A worn block introduces play in the steering, causing the striper to wander or requiring constant correction. Replacing with genuine Titan 779-046 restores original steering precision, reduces operator fatigue, and ensures that painted lines remain straight and uniform.
| Steering guidance | Provides pivot point for steering linkage |
|---|---|
| Tracking stability | Maintains straight line movement |
| Wear surface | Protects more expensive steering components |
| Visible wear or flat spots | Block no longer has original radius |
|---|---|
| Cracking | Stress cracks in the block material |
| Excessive play | Steering feels loose or wanders |
| Missing block | Block lost during service or operation |
Titan part 779-046 is compatible with the following striper models. Always confirm fitment using the correct parts diagram for your exact machine and serial number.
| Model | Component |
|---|---|
| PowrLiner 8900, 8900 XLT, 8900 XLT SP | Radius Block |
| PowrLiner 6950, 6900 XLT, 6900 XLT SP | Radius Block |
| PowrLiner 4950, 4900, 4900 XLT | Radius Block |
When replacing the radius block, consider inspecting or replacing these related steering components.
Check for worn ball joints or bent rods; replace if play is present.
Inspect the mounting pin for wear or bending; replace if the block fits loosely.
Check toe and camber adjustments if steering wander persists after block replacement.
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