Start with the simplest checks: relieve pressure, then clean the tip or nozzle and air holes, check filters and suction tube, and confirm pressure and air settings. If those are fine, wear parts are next: seals, valve balls and seats, or packings on pump models. The tables below list each symptom with the part it points to and the diagram page.
- Check these four things on any fine finish sprayer
- MultiFinish 440: compressor, air and atomization
- MultiFinish 440 pump wear: leaks, lost pressure and pulsing
- FlexSpray Handheld: little or no flow
- ProFinish: turbine, cup and AS1130 pump
- Helix: what we can and cannot tell you
- When to call instead of guessing
Fine finish equipment fails in a few predictable ways, and the part behind each symptom is usually small. This guide ties each symptom to the Titan manual cause where one exists, and to the diagram page where the part lives.
Check these four things on any fine finish sprayer
Most fine finish complaints are decided by a handful of cheap things. Work through them in this order before you order a part.
- Tip or nozzle. A worn tip has a wider orifice, so pressure falls and the pattern gets coarse or streaky. A partly blocked one does the same. Clean it, then judge the pattern again.
- Filters and strainers. Airless systems typically filter at the pump inlet, at the pump or manifold and at the gun. A partly blocked filter causes pressure loss, pulsing and spitting.
- Coating. Strain it. Material that is too thick for the machine will not atomize, and thinning must follow the coating maker's limits.
- Settings. Use the lowest pressure that atomizes well, and on air-assisted machines check the air regulator before assuming a fault.
MultiFinish 440: compressor, air and atomization
The MultiFinish 440 has two systems to separate: the air compressor and the fluid pump. The manual's troubleshooting page covers three symptoms, and each maps to parts on the diagrams.
MultiFinish 440 symptoms from the Titan manual
| Symptom | Causes the manual lists | Part or page to check |
|---|---|---|
| Compressor does not start | ON/OFF switch off, faulty switch or compressor, tripped breaker, or a blocked or faulty pressure relief solenoid valve | 9850936 Power Switch, 0524568 Circuit Breaker, 0524544 Solenoid 120V, 0524543A Compressor |
| Compressor runs but not enough air | Air regulator set too low | Turn the regulator up first; then check the 0524570 Gauge and relief valves on the compressor page |
| Poor atomization | Tip worn or too large, air pressure too low, insufficient fluid delivery, material too viscous | Tip (695-415 Reversible Tip on the GM 3600 gun), fluid section valves and the 730-067 60 Mesh Manifold Filter |
Causes are from the Titan MultiFinish manual's troubleshooting page. Part suggestions are matched to the site's diagrams.
Rule out the free fixes first on the first two rows: the switch position, the breaker, and the regulator setting. Parts only come into it when those are fine. The compressor parts live on the compressor assembly page, and the pump parts on the fluid section assembly page.
MultiFinish 440 pump wear: leaks, lost pressure and pulsing
These are general piston-pump signs, not items from the MultiFinish manual, so confirm the procedure in your manual. A worn packing shows as leakage at the wet cup, paint in the wet cup, or pressure that will not hold. A scored piston rod destroys new packings, so inspect 704-551A Piston Rod when you repack. Worn inlet or outlet valve seats and balls cause pulsing, loss of pressure or failure to prime.
Pump symptoms and the fluid section parts behind them
| Symptom | Part to check | Part number |
|---|---|---|
| Paint leaking at the wet cup, pressure will not hold | Upper packing kit, lower packing, repacking kit | 704-564, 0532915, 704-586B |
| Pulsing, will not prime | Inlet valve ball and seat, outlet valve ball and seat | 762-145, 762-137, 50164, 704-558 |
| Weak delivery, spitting | Manifold filter | 730-067 |
FlexSpray Handheld: little or no flow
For the corded FlexSpray Handheld the manual names four causes of little or no flow: a clogged nozzle, a clogged or loose suction tube, the flow setting too low, and insufficient pressure build-up in the container. Three of them cost nothing to check.
FlexSpray Handheld flow problems
| Cause | What to do | Part if it is worn or lost |
|---|---|---|
| Clogged nozzle | Clean with warm soapy water for latex or mineral spirits for oil-based. Never use sharp metal objects on the nozzle or air holes. | 0529411 Cleaning Brush, 0529910 Fluid Nozzle |
| Clogged or loose suction tube | Reseat the tube, clear the filter. | 2319222A Feed Tube, 0529915 Coarse Suction Tube Filter |
| Flow setting too low | Increase the setting. | None |
| Not enough pressure building in the container | Check the lid and container seals for leaks. | 0529923 Container Seal, 0529927 Lid Seal |
Causes from the Titan FlexSpray Handheld manual. Parts are on the FlexSpray HandHeld Parts List diagram.
See the FlexSpray HandHeld Parts List for callouts. These parts are for the corded model; the cordless Pro 18V is not on the site's diagrams.
ProFinish: turbine, cup and AS1130 pump
ProFinish covers different machines, so identify yours first. The TS40 and TS50 are HVLP turbine systems. The AS1130 is an airless fine finish pump with a diaphragm pump, hopper and LX-80 gun. The research on file has no Titan troubleshooting page for either, so the pointers below come from general sprayer practice.
- HVLP needle and nozzle. The needle and nozzle set must suit the material's viscosity, and the gun should be cleaned straight after use. On the C-100 gun the set is 773-153.
- Turbine air. The TS turbine diagram carries the 773-655 Filter 2 Pack and the 770-447 Flex Air Hose.
- AS1130 pump. If it loses pressure or will not prime, the valves on the paint pump page are where fluid is controlled: 0270526 Suction Valve Assembly, 0093635 Outlet Ball, 0270291 Outlet Valve Seat, and the 0288771 Diaphragm Assembly.
- LX-80 gun. The 580-034A Gun Repair Kit and 641-003 Tip Seal are the parts on the gun diagram.
The AS1130 pump page is ProFinish AS1130 Paint Pump Assembly Parts, and the TS40 and TS50 turbine is on its own page.
Helix: what we can and cannot tell you
The Helix VR, FR and LP are plural-component proportioners, not fine finish sprayers in the usual sense, and we do not have a readable troubleshooting page for them. Heater, temperature, ratio and flush problems on a Helix should be handled from its manual. The site has no Helix diagram pages, but it sells Helix parts as individual products such as the 558981 Repacking Kit and 0558564A Piston Rod. Fitment depends on the product's listed models, so call (713) 931-0006 with your serial number before ordering.
When to call instead of guessing
If a symptom is not in the tables, if the machine is a Helix, or if you are not sure which diagram your model uses, call (713) 931-0006 with the model and serial number. Anything rated for the machine must be rated for its pressure: on the MultiFinish 440 the manual requires every replacement part to be rated at least 3300 psi.
Common first replacements across these machines. Live prices show in the grid.
Switch, breaker, solenoid, compressor and relief valves.
Packings, valve balls and seats, filter.
Nozzle, seals, container and filters.
Bottom line
Relieve pressure, clean the tip or nozzle, check filters and settings, then order the part the symptom points to. Cheap checks come first. For Helix questions or an unknown model, call (713) 931-0006.
Not Sure Which Part You Need?
Send us your model and serial number and we will confirm the exact part before you order. Or find it yourself in the parts diagrams.
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