LockNLube Pistol-Grip Grease Guns – Heavy Duty & Premium Models (LNL153-450 & LNL252-450) - Service Kits
High-quality one-hand operated pistol-grip grease guns designed for reliable, leak-free greasing. The Heavy Duty model (LNL153) features a rugged steel/cast head and outputs up to 5,000 PSI, while the Premium model (LNL252) has a lighter cast aluminum head and can deliver up to 8,000 PSI for the toughest fittings. Both guns include the LockNLube® Grease Coupler, a 20″ high-pressure hose with in-line swivel, an air bleeder valve, and a Loop & Lock™ handle clip for clean storage.
- Grease Coupler Rebuild
- Uses LockNLube Coupler Seal Kit (GC81011)
- Includes new rubber seal and jaws
- Quick rebuild restores like‑new performance
- Hose & Swivel
- Standard 1/8″ NPT fittings
- Hose and swivel can be replaced independently
- Use thread sealant when reinstalling
- Follower & Spring
- Replaceable if rubber plunger cracks or spring weakens
- Model‑specific parts; contact LockNLube support
- Pump Head Components
- Internal failures are rare
- Not sold as a kit; typically handled under warranty or support
- Miscellaneous Parts
- Bleeder valves, fittings, pins, and clips are replaceable
- Loop & Lock clip can be replaced if damaged
- Summary
- Most wear occurs at coupler and hose
- Guns are designed for long life with minimal intervention