Titan part 550-540 is a LX-40 airless gun parts kit used to rebuild the LX-40 spray gun on compatible PowrLiner airless stripers. This kit contains all necessary wear items to restore proper gun function, including the fluid needle, seat, spring, packings, and seals. A worn or leaking gun can cause poor spray pattern, dripping, or loss of pressure. Rebuilding with this OEM parts kit restores reliable triggering, positive shut‑off, and consistent finish quality.
| Part Number | 550-540 |
|---|---|
| Part Description | LX-40 Airless Gun Parts |
| Brand | Titan |
| Fits |
PowrLiner 1800M, 2800M |
| Condition | New |
The Titan 550-540 LX-40 Airless Gun Parts Kit is a complete rebuild set for the LX‑40 spray gun used on PowrLiner 1800M and 2800M airless stripers. It includes all the wear components that degrade over time from normal use, abrasives, and chemical exposure.
Common symptoms of a worn spray gun include dripping from the tip when the trigger is released, difficulty triggering (stiff or sticky), uneven fan pattern, or loss of pressure at the gun. Rebuilding with this OEM parts kit restores positive needle seating, smooth trigger action, and a consistent, leak‑free spray pattern.
| Restores positive shut‑off | Replaces worn needle/seat to stop tip drip |
|---|---|
| Smooths trigger action | New packings and seals reduce friction |
| Eliminates pressure loss | Stops internal leakage that wastes pressure |
| Extends gun life | Prevents body wear from damaged components |
| Tip drips after trigger release | Needle/seat no longer seals |
|---|---|
| Hard to pull trigger | Packings swollen or dry |
| Uneven or spitting spray pattern | Worn needle or seat causing erratic flow |
| Visible leakage from gun body | Seals have failed |
Titan part 550-540 is a direct replacement LX-40 gun parts kit for the following PowrLiner models. Always verify that your spray gun is the LX‑40 model before ordering.
| Model | Component |
|---|---|
| PowrLiner 1800M | LX-40 airless gun parts |
| PowrLiner 2800M | LX-40 airless gun parts |
When rebuilding the gun, inspect or replace these additional components.
A worn tip affects pattern quality; replace if damaged.
A clogged filter can mimic gun problems; clean or replace.
Inspect for leaks or damage that could affect pressure.
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