Part number 977-228 is a replacement pulley designed to transmit rotational motion via belt in the drive system of compatible PowrLiner, PowrTwin, and PowrTex equipment. This precision‑machined component ensures proper belt alignment and tension, enabling efficient power transfer from the motor to the pump or other driven components. Replacing a worn, cracked, or damaged pulley restores smooth operation, prevents belt slippage, and ensures reliable performance.
| Part Number | 977-228 |
|---|---|
| Part Description | Pulley |
| Brand | PowrLiner / PowrTwin / PowrTex |
| Fits | PowrLiner: 6900 XLT SP, 6900 XLT, 8900 XLT SP, 8900 XLT, 8900; PowrTwin: 12000 GHD, 12000 XLT DI, 12000 GH, 12000 XLT, 6900 XLT DI, 6900 XLT, 6900 GH, TM 8900 XLT, 8900 GH; PowrTex: 6900SF, 12000SV |
| Condition | New |
The 977-228 Pulley is a critical drive component used in the belt‑drive systems of compatible PowrLiner, PowrTwin, and PowrTex line stripers and sprayers. It mounts on the motor or driven shaft and engages with a belt to transmit rotational power, enabling the pump or other mechanisms to operate efficiently. The pulley is precision‑machined to maintain proper belt alignment and tension, reducing wear on both the belt and bearings.
Over time, pulleys can become worn, cracked, or damaged due to belt tension, vibration, or corrosion. A worn pulley may cause belt slippage, misalignment, noise, and reduced power transmission, leading to poor performance or system failure. Replacing the pulley restores proper belt tracking and tension, ensures smooth and efficient power transfer, and extends the life of the belt and associated components.
| Power transmission | Transfers rotational motion from motor to driven components via belt |
|---|---|
| Speed / torque control | Pulley diameter determines speed ratio in belt drives |
| Belt guidance | Grooves keep belt aligned and prevent slipping |
| Groove wear | Worn or glazed grooves causing belt slippage |
|---|---|
| Cracks / breakage | Visible cracks or missing sections |
| Misalignment | Pulley wobbles or is no longer true |
| Excessive noise | Squealing or chirping from belt/pulley interface |
Part number 977-228 is compatible with the following equipment models. Always confirm fitment using the correct parts diagram for your exact model and serial number.
| Brand / Series | Model | Component |
|---|---|---|
| PowrLiner | 6900 XLT SP | Pulley |
| 6900 XLT | Pulley | |
| 8900 XLT SP | Pulley | |
| 8900 XLT | Pulley | |
| 8900 | Pulley | |
| PowrTwin | 12000 GHD | Pulley |
| 12000 XLT DI | Pulley | |
| 12000 GH | Pulley | |
| 12000 XLT | Pulley | |
| 6900 XLT DI | Pulley | |
| 6900 XLT | Pulley | |
| 6900 GH | Pulley | |
| TM 8900 XLT | Pulley | |
| 8900 GH | Pulley | |
| PowrTex | 6900SF | Pulley |
| 12000SV | Pulley |
Pulley issues often involve associated components. When servicing the pulley, these parts are commonly inspected or replaced at the same time.
Inspect belt for wear, cracking, or glazing; replace if necessary.
Check the pulley hub for wear and the keyway for damage.
Ensure shafts and bearings are in good condition to prevent future pulley wear.
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