The ProFinish AS1130 parts are on four diagram pages: Paint Pump Assembly (diaphragm, suction valve, outlet ball and seat), Hopper Assembly (mini hopper and filter screens), Final Assembly (pressure control knob, eccentric sleeve, springs) and LX-80 Spray Gun (repair kit, seals, tip seal, filter). Open the page for the assembly that is worn.
The ProFinish AS1130 is an airless fine finish pump. Its diagrams show a diaphragm paint pump fed from a mini hopper, with an LX-80 gun on the end. Parts and manuals for this older model remain available, and the site breaks it into four pages so you can go straight to the assembly that needs attention.
We do not give pressure, weight or flow figures for the AS1130 here, because the sources we checked disagree. The model's manual has the correct ratings, and you will want it for any procedure on this machine.
Paint pump assembly: where the fluid is handled
The Paint Pump Assembly page is the busiest of the four, with thirteen parts. The callout numbers below are the ones on the diagram, so you can find each part on the picture.
AS1130 paint pump parts worth knowing
| Callout | Part | Number | Role |
|---|---|---|---|
| 7 | Diaphragm Assembly | 0288771 | The diaphragm itself, the part that gives the pump its name |
| 6 | Diaphragm Ring | 0270494 | Ring that goes with the diaphragm |
| 1 | Suction Valve Assembly | 0270526 | The inlet valve, where coating enters the pump |
| 11 | Outlet Ball | 0093635 | Ball that closes the outlet valve |
| 12 | Outlet Valve Seat | 0270291 | Seat the outlet ball closes against |
| 13 | Seal, Outlet Seat | 0089494 | Seal for the outlet seat |
| 5 | Prime/Spray Valve Kit | 0270951 | The prime/spray valve parts |
| 10 | Outlet Spring | 0047485 | Outlet spring, listed on the pump page |
The page also lists a nylon sealing washer (0089482), a seal washer (9970103), an end cap (0089564), the low profile block (0270460) and the outlet fitting (0288379).
The valve parts are the ones to suspect first for the symptoms people actually report. On airless pumps in general, worn inlet or outlet valve parts cause pulsing, a loss of pressure, or failure to prime, because the pump can no longer hold what it has moved. A diaphragm that has failed is a different job and a bigger one, so work through the cheaper valve parts and the gun side first, then check the manual before opening the pump.
Hopper assembly: feeding the pump
The Hopper Assembly page lists six parts: the mini hopper (0090283), the hopper cover (0279591), the return tube (0093865) and return tube assembly (0090560), and two screens. The two screens are a coarse filter screen (0088871) and a filter screen (0089917), both shown at callout 2, so confirm which one your hopper takes before you order.
Screens stop debris reaching the pump, which is why they are the first place to look when flow drops. Clean them after every job and do not let coating dry in them, as with any filter on an airless system.
Final assembly: pressure knob and mechanical parts
The Final Assembly page holds the mechanical side. The parts most people need from it are the pressure control knob (0288775), the eccentric sleeve and bearing assembly (0090031) and the piston spring (0005311). The rest are a shaft key (0089829), retaining ring (0047393), a seal (0089930), piston washer (0270548), retainer (0089456), end cap (700-674) and a screw (700-069).
These are service parts rather than routine consumables. If the pump will not build pressure, rule out the tip, the filters and the valves before you open the final assembly.
LX-80 gun: the small parts that wear
The LX-80 Spray Gun page lists eleven parts. Four matter most.
- 580-034A Gun Repair Kit. We do not list what is inside it here, so confirm the contents with our parts team before you buy.
- 580-510A LX-80 Seal Assembly (callout 4).
- 641-003 Tip Seal (callout 10).
- 500-200-06 Medium Filter (callout 22).
The page also lists swivel repacking (500-053), a handle/swivel kit (580-540), the die cast aluminum housing (580-003), a retractor pin (580-025), a handle seal (560-038), a copper washer (520-020) and a nylon lock nut (226-001). A trigger guard (580-023) is sold for the LX80 but is not shown on the diagram page.
Pressure loss, pulsing or a poor pattern: what to check first
Work from cheap to expensive. A partly blocked filter causes pressure loss, pulsing and spitting, so clean the hopper screens and the gun filter first. A worn tip has a wider orifice, which shows up as a coarse or streaky pattern and falling pressure, so fit a new tip before you blame the pump. Then look at the valve parts on the Paint Pump page. Open the diaphragm or final assembly only after those, and only with the manual beside you.
AS1130 parts most often ordered from this guide:
The Short Version
For the AS1130, open the Paint Pump page for the diaphragm and valve parts, the Hopper page for screens, the Final Assembly page for the pressure knob and drive parts, and the LX-80 page for the repair kit, tip seal and filter. Check the tip and filters first, call (713) 931-0006 with the serial number if the diagram leaves you unsure.
Not sure which AS1130 part you need?
Call (713) 931-0006 with your model and serial number and our parts team will confirm the part before you order.
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