

Part number 742-997 is a Cylinder Head that encloses and seals the cylinder bore on compatible Commander sprayer systems. This precision-machined component ensures proper compression and sealing for reliable air motor or pump operation.
| Part Number | 742-997 |
|---|---|
| Part Description | Head,cylinder |
| Fits | Commander |
| Condition | New |
Part number 742-997 is a Cylinder Head specifically engineered for the Commander series professional spray systems. These industrial-grade units are designed for demanding coating applications requiring reliable, high-pressure fluid delivery for commercial and industrial finishing. This cylinder head is a critical component that encloses and seals the top of the cylinder bore in the air motor or pump assembly. It contains precision-machined surfaces that seal against the cylinder wall and may incorporate ports for air intake, exhaust, or fluid passages.
Manufactured from high-strength materials with precision-machined sealing surfaces, this cylinder head ensures proper compression and sealing of the cylinder. It may include features such as valve seats, mounting points for accessories, and cooling fins depending on the specific application. The head is secured to the cylinder with bolts or studs and sealed with a gasket or O-ring to prevent leakage. Proper cylinder head condition is essential for maintaining compression, preventing fluid bypass, and ensuring efficient operation.
This cylinder head is subjected to high pressures, thermal cycling, vibration, and potential corrosion. Failure modes include cracking, warping, thread damage, and gasket surface degradation. Symptoms of a damaged cylinder head include loss of compression, external leaks, reduced power, and overheating. Replacement with genuine 742-997 cylinder head restores proper sealing and ensures reliable operation of Commander spray systems.
| Cylinder Sealing | Encloses and seals the cylinder bore |
|---|---|
| Compression Maintenance | Maintains proper compression for air motor or pump |
| Porting | May contain air or fluid passages |
| Cracking | Visible cracks in cylinder head |
|---|---|
| Warping | Head is warped, preventing proper sealing |
| Thread Damage | Mounting threads are stripped or damaged |
| Leakage | External leaks at head gasket interface |
Part number 742-997 is specifically designed for the Commander series professional spray systems. These industrial-grade units are engineered for demanding coating applications requiring reliable, high-pressure fluid delivery. This cylinder head is a model-specific component engineered for the cylinder dimensions and sealing requirements of the air motor or pump on these particular sprayer systems. Always confirm fitment using the correct parts diagram for your exact model and serial number.
| Compatible Models | Component |
|---|---|
| Commander | Head,cylinder |
The cylinder head is part of the air motor or pump assembly. When servicing this component, these related parts are often inspected or replaced at the same time.
Seals between head and cylinder. Always replace with new head.
Fasteners securing the head. Replace if stretched or corroded.
Components mounted in head. Inspect for wear.