SPEEDLINER PRO™ Spray Gun Cleaning & Maintenance Guide

Safe cleaning, protection of gun components, and best practices for long-term spray equipment performance.

Pre-Flush Before Dismantling

  • Pour solvent thinners into a spare 1-litre tin and spray through the gun before disassembly
  • This clears the internal pickup tube and nozzle chambers ahead of dismantling
  • Reduce air pressure to 35 – 40 PSI (2.4 – 2.7 bar) for pre-flush spraying
  • Spray into a waste barrel or coating waste container

Critical Component Protection

  • Remove the brass trigger pin and O-rings before cleaning the gun body
  • Do NOT allow trigger O-rings or brass pin to contact solvents – this will damage seals and require replacement
  • Spare O-ring kits are available in the Speedliner Pro™ Deluxe Spray Gun Kit

Step-by-Step Disassembly for Cleaning

  1. Un-screw the spray nozzle
  2. Un-screw the pickup tube
  3. Use the Air Jet Removal Key to remove the air jet
  4. Remove the end screw
  5. Remove the trigger pin and spring
  6. Clean the gun body, nozzle, chambers and pickup tube from both ends using Slimline bottle brush + solvent thinners
  7. Remove the T-shape key from the kit and take out the air jet for cleaning
  8. Clean the air jet and gun body thoroughly

Cleaning & Lubrication

  • Thoroughly flush the materials tin and internal feed system using solvent thinners
  • Clean the gun head and nozzle chambers meticulously
  • Lubricate the plunger O-rings with petroleum jelly / Vaseline (keeps seals conditioned)
  • Lubricate the trigger pin lightly before refitting

Re-Assembly & Final Clean

  • Re-fit the trigger pin & spring
  • Re-fit the end screw
  • Re-assemble the gun in the same order it was dismantled
  • Reconnect to air line and blow through the gun to remove residual cleaning solution
  • Gun is not moisture-sensitive and will not freeze in shipping once cleaned
  • Use a regulated working air pressure of 35 – 40 PSI during cleaning, and low/no pressure hopper guns for batch mix coatings

Important Material Guidance

  • Prepare and mix SPEEDLINER PRO™ separately as per official mixing instructions
  • Solvent batch-mix systems may contain VOCs – ensure you check solids content for value and durability
  • When reviewing liner strength, rely on sprayed sample test data not cast/poured samples

Safety Notice

WARNING: Some DIY coatings marketed as spray liners may not match the durability, adhesion, or safety standards of true professional polymer coatings such as SPEEDLINER PRO™ systems.

Coatings should only be applied by trained users in suitable facilities, with appropriate respiratory protection and spray equipment.

Proper spray gun cleaning and lubrication protects equipment performance, coating finish quality, and long-term colour and adhesion results.