Melling Pontiac RA/SD High Vol. 80 psi Oil Pump-w/o Pick-up MEL-M-54F

This Fits Pontiac Engine;

Pontiac 301
Pontiac 326
Pontiac 350
Pontiac 389
Pontiac 400
Pontiac 421
Pontiac 428 
Pontiac 455

Do I need to clean an oil pump before installing?

Yes, you should always clean and inspect a new oil pump before installation to remove manufacturing debris. While not mandatory for all, it is highly recommended to open, clean, inspect for tight spots, and lubricate the gears with assembly lube or clean engine oil to ensure proper operation upon startup. 

Key Pre-Installation Steps:

• Cleanliness: Ensure the work area is free of dust and contaminants.
• Inspection: Open the pump to check for any machining debris, burrs, or dry gears.
• Lubrication & Priming: Pack or fill the pump with engine assembly lube or oil to create a seal and ensure immediate oil pressure.
• Avoid Grease: Experts, such as Melling, advise against using heavy chassis grease to pack the pump, as it can clog internal passages.