Part number 805-287A is a Clevis Assembly that connects the piston rod to the drive mechanism on compatible Impact and Helix series sprayer systems. This precision linkage component converts rotational motion into reciprocating pump action for reliable fluid delivery.
| Part Number | 805-287A |
|---|---|
| Part Description | Clevis Assembly |
| Fits | Impact 1140 service; impact 1140 I and IA; Helix VR; Helix FR |
| Condition | New |
Part number 805-287A is a Clevis Assembly, a precision-engineered mechanical linkage component specifically designed for the Titan Impact 1140 service models, Impact 1140 I and IA, and the Helix VR and Helix FR plural component spray systems. This clevis assembly serves as the critical connection point between the drive mechanism and the piston rod, converting the rotational motion of the motor and gearbox into the reciprocating linear motion required to operate the pump. The Impact 1140 series features a 2.6 HP brushless DC motor delivering 3300 PSI maximum pressure, and this clevis assembly must withstand the continuous high-force cycling required for professional airless spraying.
The clevis assembly consists of a precision-machined yoke, hardened pivot pins, and retaining hardware that together create a durable, low-friction connection. The clevis attaches to the piston rod at one end and to the drive arm or connecting rod at the other, allowing the necessary angular movement while maintaining positive engagement throughout the pump stroke. This design accommodates the slight misalignments that occur during operation while transmitting the full force required to pressurize coating materials up to 3300 PSI. On Helix VR and FR systems, similar clevis assemblies connect the hydraulic drive to the plural component pump pistons, essential for maintaining precise A/B ratio control.
This component is subjected to extreme cyclical loads, continuous vibration, and potential contamination. Failure modes include wear of the pivot pin bores causing excessive play, pin wear or galling, cracking of the clevis arms from metal fatigue, and corrosion from chemical exposure. A worn or damaged clevis assembly causes piston misalignment, increased side loading on packings, erratic pump operation, and accelerated wear of both the pump and drive components. Replacement with genuine 805-287A clevis assembly restores proper mechanical linkage, ensures smooth pump operation, and extends the service life of the entire drive system.
| Piston Connection | Links drive mechanism to pump piston for reciprocating motion |
|---|---|
| Force Transmission | Transmits full drive force to pressurize material up to 3300 PSI |
| Misalignment Accommodation | Allows angular movement while maintaining positive engagement |
| Excessive Play | Worn pivot bores or pins cause sloppy connection |
|---|---|
| Visible Cracking | Cracks in clevis arms indicate metal fatigue |
| Binding | Clevis does not pivot freely, causing erratic pump operation |
| Corrosion | Rust or chemical degradation has compromised structural integrity |
Part number 805-287A is specifically designed for Titan Impact 1140 service models, Impact 1140 I and IA, and Helix VR and Helix FR plural component spray systems. The Impact 1140 series features a 2.6 HP brushless DC motor delivering 3300 PSI maximum pressure with a 0.034 maximum tip size. The Helix VR and FR systems utilize similar drive linkage architecture requiring this specific clevis assembly. This precision component is engineered for the force requirements, dimensional specifications, and mounting configurations of these professional sprayer systems. Always confirm fitment using the correct parts diagram for your exact model and serial number.
| Compatible Models | Component |
|---|---|
| Impact 1140 service | Clevis Assembly |
| impact 1140 I and IA | |
| Helix VR | |
| Helix FR |
The clevis assembly connects the drive mechanism to the piston rod. When servicing this component, these related parts are often inspected or replaced at the same time.
The rod that connects to the clevis. Inspect for wear, scoring, or thread damage.
The component to which the clevis attaches. Check for wear or damage at pivot points.
Pins and retaining rings securing the clevis. Replace if worn or damaged.
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