Prelub P3K System

A pre-lubrication & evacuation system intended for engines of 10-15 ℓ displacement or with sump capacities of 9-12 gallons. Systems are available for both 12 V and 24 V systems.

Performance (12 V Systems):
21.1 °C 15W40 Oil: 7-8 gpm @ 60-70 A depending on available engine port sizes
0 °C 15W40 Oil: 4-5 gpm @ 80-90 A depending on available engine port sizes
*12 V systems will draw ~90% higher motor current

Components & Features:

• Timer: Standard Prelub “no-delay” relay timer delivers fastest possible start.
• Wiring: Cable size & fuse prevent wire and motor damage due to excessive current.
• Motor Switch: Rated for 100 A carry current and consumes minimal power for activation.
• Inlet Hose: Rated for 148.9 °C oil. Will not collapse under any vacuum level.
• Pressure Hose: Rated for 148.9 °C oil, and nearly 5 times maximum pump output pressure.
• Check Valve: Prevents backflow of oil after engine start with minimal restriction and weight.
• Pump Relief Valve: Standard

System Connections:
Plumbing
Custom fittings are available to connect to the engine. The oil will be drawn through an oil pan port and returned to a port before the existing engine filter.

• Suction fitting in sump should have at least 12.7 ID (22.2 mm ORB, 12.7 mm NPT, M22) if used w/viscous oil (15W40 below 4.4 °C). If the available port is smaller, call for alternatives.
• Oil filter head return port should have at least 7.62 ID (9.5 mm pipe, 14.3 mm ORB, M16).
• Install the pressure switch into the furthest downstream port in the engine’s pressurised oil system. Adapters available for most port types and sizes.

Electrical
Connect the motor to a source of power with the gauge of cables recommended on the next page. Install key switch and pressure switch adapter harnesses. Plug the main wiring harness into the connectors at the key switch harness, magswitch, pressure switch harness and control relay.

Motor-Pump Components and Features:

• Motor: Permanent Magnet DC motor. Insulated ground – More reliable than case-grounded motor. High efficiency reduces current draw at all conditions and allows longer motor run time.
• Pump: Cast-iron housing with steel gears.
• Integral Relief Valve (140 psi) and seal-protection feature prevent motor or pump damage due to excessive pump pressure.

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