Most Maxum II guns share the same wear parts: needle packing 0275579, needle spring 0295575, the air valve seals and spring, the 277502 material flow knob and check valve assembly 0276248. Callout numbers differ from one Maxum II diagram to the next, so pick your gun's diagram first. Kits include repair kit 0277943 and check valve repair kit 0297051.
Parts shared across the Maxum II diagrams
Our site has seven Maxum II diagram pages, one for each combination of air supply and cup or feed style (turbine, regulator and compressor guns, with cup, pressure feed or top feed). The same small group of parts repeats on the turbine, regulator and pressure feed pages. The numbers are the same on every page, but the callout numbers are not, so always read the callout off your own gun's page.
Shared Maxum II parts and their callouts on three diagrams
| Part | Part number | Turbine Cup (0277034) | Regulator Cup (0277076) | Regulator Top Feed (0277075) |
|---|---|---|---|---|
| Material Flow Adjustment Knob | 277502 | 1 | 1 | 18 |
| Needle Spring | 0295575 | 2 | 2 | 19 |
| Air Valve Spring | 0275578 | 6 | 6 | 23 |
| Air Valve Seal | 0277486 | 7 | 7 | 24 |
| Threaded Air Valve | 277536 | 8 | 8 | 25 |
| Air Valve Snap Ring | 0277489 | 9 | 9 | 26 |
| Front Air Valve Seal | 0277488 | 10 | 10 | 27 |
| Locking Nut | 9811119 | 11 | 11 | 28 |
| Needle Packing | 0275579 | 24 | 22 | 34 |
| Check Valve Assembly | 0276248 | 34 | 32 | 5 |
Callouts copied from the three diagram pages. The Rear Air Valve Seal 0275501 is callout 5 on the Turbine Cup and Regulator Cup pages.
Compare the Turbine Cup and Regulator Top Feed columns: the same needle packing is callout 24 on one page and 34 on the other. That is why a callout number alone is never enough to order from.
Fluid side
Needle packing 0275579 and the needle spring 0295575 are the fluid-side wear parts in the table. The Maxum II manual ties a leaking gun to damaged parts or a loose packing nut, and pulsing to loose or damaged packing, so the packing is the first part to look at for those symptoms.
Check valve assembly 0276248 is on the cup and top feed pages. The manual lists a plugged check valve under little or no flow, and a check valve that is not working under spitting. The regulator pages also list 0277483 Long Check Valve Tube (callout 33 on the two cup pages, 6 on Regulator Top Feed), and the two regulator cup pages list the 0277495 Cup Gasket (callout 44).
Air side
The air valve group is the spring, the three seals and the snap ring in the table, plus the threaded air valve 277536. The 0277493 Air Flow Valve appears on the turbine pages and the compressor pressure feed page (callout 17 on most of them, 12 on the Turbine Top Feed page). The 0277515 Retaining Ring is listed on every page too, again at a different callout on each.
Bleeder and non-bleeder guns
The Maxum II manual describes two air layouts. A standard non-bleeder gun has its air inlet at the bottom of the handle with an air flow knob. A bleeder gun has the inlet moved to the rear, no air knob, and air flows whenever the hose is attached. The manual says the bleeder layout is for high-viscosity materials and confined spaces, and Titan says the Maxum II converts from non-bleeder to bleeder. Because the air parts differ, check that the page you order from matches the way your gun is set up.
Kits
- 0277943 Maxum II Gun Repair Kit. Titan's kit contents are not listed in the material we work from, so check the product page.
- 0297051 Check Valve Repair Kit, for the check valve side.
- 0297052 Cup Gasket Kit.
- 0279942 Standard Maintenance Kit. Titan says it contains #2 and #4 projector sets, a gun wrench, 6 check valve seals, needle packing, a replacement check valve assembly, a cup gasket and an air plug.
- 0279941 Deluxe Maintenance Kit.
What the manual says about two of them
The Maxum II manual gives a specific instruction for the packing nut: tighten it with a 3/8 inch wrench until the needle stays retracted, then loosen it until the needle moves freely. It gives no torque value, so none is quoted here. The manual also says the check valve seal goes in stem up, with the arrow pointing toward the gun. The Locking Nut 9811119 on the diagrams may not be the same thing as the manual's packing nut, so match the callout on your page against the manual rather than assuming.
Choosing the right diagram
Start on the Maxum II HVLP Spray Guns Series page and pick the page that matches the gun you hold. The names tell you the air source and feed: Turbine Cup (0277034), Turbine Pressure Feed (0277057), Turbine Top Feed (0277055), Compressor Pressure Feed (0277088), Compressor Regulator Cup (0508062), Regulator Cup (0277076) and Regulator Top Feed (0277075). Direct links: Turbine Cup, Regulator Cup and Turbine Pressure Feed.
Maxum II wear parts and kits from this guide:
The Short Version
Needle packing 0275579, check valve assembly 0276248 and the air valve seals are the parts you will order most often on a Maxum II. They repeat across the diagrams but the callouts change, so open your gun's own page, then use the kits when more than one part is due.
Not sure which Maxum II diagram is yours?
Call (713) 931-0006 with the gun number or model and serial number and our parts team will point you to the right page.
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