KLEENOIL Engine Applications

HDU9778KU50

Step 3: Connect Inlet (Pressure Side) Locate a low-pressure feed port from the main oil circuit. 1. For engines: use an oil gallery plug or auxiliary port.

2. For hydraulic systems: use a low-pressure test port or return line. Fit the inlet hose to the HDU9778KU50 "IN" port using the correct fittings. Step 4: Connect Outlet (Return Side) Return oil back into the sump, reservoir, or filler neck. 1. For engines: easiest return via dipstick tube adapter or drain plug adapter. 2. For hydraulics: return to tank above fluid level if possible. Fit the outlet hose to the HDU9778KU50 "OUT" port. Step 5: Prime and Test Start the engine briefly and inspect all fittings for leaks. Run the system for 10–15 minutes to ensure proper oil flow. Verify stable pressure and clean return through the outlet line. Service & Maintenance Tips Replace the cartridge every 500 hours or 3 months , whichever comes first. Mark installation date on housing or in service log. Use HDFC1878KF50 Heavy Duty Filter Cartridge as the replacement cartridge. Inspect for signs of saturation: darker color, restricted flow, or high backpressure. Dispose of used filters responsibly.

Post-Installation Checklist 1. All hoses tight and leak-free 2. Filter upright and secure

3. Return line functioning 4. Unit accessible for servicing

Troubleshooting

Issue

Possible Cause

Solution

Prime manually or bleed hoses

Airlock or blocked return

No oil flow from outlet Excess pressure in system Leaks at connections Filter fills too fast Need Help? Kleenoil Filtration Ltd

Incorrectly connected to high pressure line Loose fittings or poor sealant Excess water or contamination present

Use low-pressure port only Retighten, reseal with new dowty washers Replace cartridge and test oil

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