SprayTech part 978-050 is a motor brush repair kit used to restore electrical contact and performance in the sprayer's motor on compatible units. This kit contains the carbon brushes and related components needed to maintain proper motor operation and electrical conductivity.
| Part Number | 978-050 |
|---|---|
| Part Description | Motor Brush repair kit |
| Brand | SprayTech |
| Fits | Powerliner 4955, 6955, 8955; PowrLiner 4000; PowrLiner 4900 XLT; PowrLiner 4900; PowrLiner 4950; PowrLiner 5000; PowrLiner 6000; PowrLiner 6900 XLT SP |
| Condition | New |
The SprayTech 978-050 Motor Brush Repair Kit contains the carbon brushes and associated components necessary for maintaining electrical contact in the motors of compatible PowrLiner series sprayer models.
Motor brushes are consumable components that gradually wear down through normal operation as they maintain electrical contact with the motor's commutator. Worn brushes can cause poor motor performance, sparking, intermittent operation, or complete motor failure. Regular inspection and replacement of brushes helps ensure reliable motor operation and extends the overall service life of the sprayer.
| Electrical contact | Carbon brushes conduct electricity to the motor commutator |
|---|---|
| Current transfer | Enables power flow from stationary to rotating motor components |
| Wear management | Designed to wear predictably while protecting the commutator |
| Brush length | Brushes worn to near minimum specified length |
|---|---|
| Motor issues | Poor performance, sparking, or intermittent operation |
| Visible wear | Cracking, chipping, or uneven wear patterns |
| Preventive maintenance | Scheduled replacement based on operating hours |
SprayTech part 978-050 is compatible with the following SprayTech sprayer models. Always confirm fitment using the correct parts diagram for your exact model and revision.
| SprayTech Model | Component |
|---|---|
| Powerliner 4955 | Motor brush repair kit |
| Powerliner 6955 | Motor brush repair kit |
| Powerliner 8955 | Motor brush repair kit |
| PowrLiner 4000 | Motor brush repair kit |
| PowrLiner 4900 XLT | Motor brush repair kit |
| PowrLiner 4900 | Motor brush repair kit |
| PowrLiner 4950 | Motor brush repair kit |
| PowrLiner 5000 | Motor brush repair kit |
| PowrLiner 6000 | Motor brush repair kit |
| PowrLiner 6900 XLT SP | Motor brush repair kit |
Motor maintenance often involves multiple components. When replacing brushes, these parts are commonly inspected or serviced simultaneously.
Maintain proper pressure between brushes and commutator.
Inspect for wear, scoring, or damage when replacing brushes.
Check for proper alignment and freedom of movement.
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