Malabar PF56103-10PWS (250) 2 Gallon PAO Fluid Dispenser

Malabar PF56103-10PWS (250) – 2 Gallon (7.6 L) PAO Fluid Dispenser

The Malabar Model PF56103-10PWS (250) is a 2-gallon (7.6-liter) hand pump fluid dispenser specifically designed for servicing F-16 aircraft using PAO (polyalphaolefin) cooling and hydraulic fluid. Manufactured by Malabar International, a Tronair company, this unit ensures precise, clean, and reliable fluid delivery during aircraft maintenance operations.

The dispenser includes a compact reservoir, pump assembly, water stop filter, relief valve, pressure gauge, and flexible hose with quick-connect coupling. Its precision-engineered design provides durability and consistent performance in demanding flight line and hangar environments.

Key Specifications

• Fluid Type: PAO (Polyalphaolefin)

• Reservoir Capacity: 2 gallons (7.6 liters)

• Pump Type: Manual hand pump

• Pump Outlet Pressure: 100 psig (689 kPa)

• Relief Valve Setting: 125 ± 10 psig (862 ± 69 kPa)

• Volume per Stroke: 2.5 cubic inches (41 cc)

• Hose Length: 84 inches (2134 mm)

• Filter Rating: 1 micron nominal

• Net Weight (Empty): 18 lbs (8.2 kg)

• Tank Color: Blue (indicating PAO use)

• Construction: Heavy-duty steel with ergonomic handle and integrated gauge

• Pressure Gauge Range: 0–200 PSIG

Design & Components

• Reservoir Assembly: Rugged 2-gallon blue tank with nameplate and placard for PAO identification.

• Pump Assembly (P/N PF55845-3): High-performance hand pump with integrated relief valve, piston rod, seals, and handle assembly.

• Filter Assembly (P/N PF55873): 1-micron water stop filter to ensure contamination-free PAO delivery.

• Pressure Gauge (P/N 482-050): Displays system pressure up to 200 psig for precise control.

• Fillport Assembly (P/N PF55447): Sealed fillport for quick, spill-free filling.

• Hose Assembly (P/N TF-1039-38-84.0): 84-inch flexible delivery hose with adapter, coupling, and dust cap for clean connection.

• Relief Valve: Automatically returns fluid to reservoir at 125 ± 10 psig to prevent overpressure.

• Mounting & Hardware: Includes yoke clamp, fasteners, and fittings for secure assembly and serviceability.

Performance & Operation

1. Preparation: Fill reservoir through the fillport using approved PAO fluid.

2. Priming: Operate the hand pump a few strokes to eliminate trapped air.

3. Connection: Attach the delivery hose coupling to the aircraft service port.

4. Dispensing: Use steady hand pump strokes to deliver fluid at a controlled rate.

5. Completion: Disconnect the hose, cap all fittings, and store in a clean, dry area.

The pressure gauge provides real-time feedback, while the water stop filter prevents contamination, ensuring only clean PAO fluid enters the aircraft system.

Maintenance

• Filter Service Interval: Every 3–4 months under normal conditions, or sooner if increased resistance occurs during pumping.

• Seal & Gasket Replacement: Replace piston, rod seals, and gaskets immediately if any fluid leakage is detected.

• Repair Parts Kit: P/N PF2-104PK includes O-rings, springs, seals, gaskets, and filter element for field maintenance.

• Relief Valve: Factory-set—do not remove or adjust.

Applications

• Ideal for F-16 and other military aircraft requiring PAO fluid servicing.

• Suitable for cooling and lubrication systems using polyalphaolefin-based fluids.

• Commonly used in maintenance hangars, flight line support, and MRO environments for hydraulic and cooling fluid replenishment.