There is no published hour or gallon schedule for Advantage or EPX packings, seats or balls, so replace by symptom. Start with the tip, filters and inlet screen. Then look at the valves: a ball or seat that will not seat causes pulsing and pressure loss. Leaks at the oil cup or paint in it point to the packings, and a scored rod ruins new ones.
Why there is no fixed schedule
We looked for a service interval for Advantage and EPX piston sprayers, in hours or in gallons, for packings, valve seats and balls. Titan does not publish one in the manuals and sources we could find, so we do not give one here. What a pump sees depends on the coating, the tip, how clean it is kept and how often it is run dry. Replace on symptoms and on what you see when you inspect it.
The examples below use the Advantage 400 and the EPX2155. A Titan dealer describes the Advantage 400 as the EPX2155 reborn under the Advantage name, but the two diagram sets differ in some part numbers, so open the page for your own model. Use the Advantage 400 fluid section page or the EPX2155 fluid section page. We do not map other EPX models to Advantage numbers.
Symptom, likely part, and what to check first
| Symptom | Check first (no cost) | Then look at |
|---|---|---|
| Pulsing or spitting | Tip, gun filter, inlet screen | Inlet ball 762-145, foot valve seat 762-137 |
| Pressure will not hold | Tip wear, filters | Outlet ball 50164, outlet seat 704-558 or 13359, packings |
| Will not prime | Inlet screen and suction set, material level | Foot valve seat and inlet ball |
| Leak or paint in the oil cup | Oil cup level | Teflon ring/seal 700-821, repacking kit 0551533, piston rod |
| Motor stops or runs poorly | Power supply and switch | Switch 9850936, capacitor 704-206, brush kit 0508645 |
Relieve pressure with the pressure relief procedure in your manual before opening any part of the fluid section.
Check these first
A worn or clogged tip causes more apparent pump problems than any piston part. A worn tip has a wider orifice, so pressure drops and the pattern turns coarse and streaky. Fit a fresh tip before you suspect the pump. Then check the filters: a partly blocked gun, manifold or inlet filter causes pressure loss, pulsing and spitting.
On the suction side the EPX2155 suction set page lists the 0295565 inlet filter, 16 mesh, and the Advantage 400 suction set page lists the 700-805 inlet screen filter. Clean it before you order anything. See the Advantage 400 suction set page or the EPX2155 suction set page.
Valves that will not seat
If a valve does not seat, the sprayer pulses, loses pressure or will not prime. The Advantage 400 owner's manual puts debris in the foot valve seat or the outlet valve seat first on the list of causes. Its fix is to clean the seats, then reverse or replace them. Cleaning is free, so do that before buying, and replace when the seat or ball shows wear.
Valve parts on the fluid section pages
Leaks, paint in the oil cup and packings
The piston rod moves through packings that seal it, and the oil cup holds lubricant that keeps them lubricated. Worn packings show up as leaking at the cup, paint in the cup, or pressure that will not hold. The Advantage 400 manual has you fill the oil cup with Piston Lube, one tablespoon (15 g), so check the level first. Keep a bottle of 314-480 Piston Lube on hand.
The manual also warns never to run the sprayer for more than ten seconds without fluid, because it wears the packings. If your sprayer ran dry, expect that to be a cause.
The parts for this are the 700-821 Teflon ring/seal, listed on both pages, and on the EPX2155 page the 0551533 repacking kit. The Advantage 400 page does not list a repacking kit, so confirm with us what fits your model before ordering.
Scored piston rod
Inspect the rod when the section is apart. A rod has to be smooth: a scored rod destroys new packings, so fitting packings on a damaged rod only repeats the leak. The Advantage 400 page lists the 704-551A piston rod, and the EPX2155 page lists the 0551536 piston assembly. A pump that leaks again soon after repacking is a reason to check the rod.
Motor and electrical
The Advantage 400 motor page lists the 0508645 motor brush kit, the 704-250 motor fan, the 704-206 capacitor assembly and, on the gear box page, the 9850936 power switch. We do not say whether your motor uses brushes. Check your diagram or call with the model and serial number before ordering a brush kit, because the page for your motor decides it.
Advantage and EPX parts most often replaced:
−8%
The Short Version
No schedule exists, so replace by symptom. Tip and filters first, valves next, packings when the cup leaks or fills with paint, and the rod if it is scored. Keep to your model's own diagram page.
Not sure which part your sprayer needs?
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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