Titan part 236-948A is a long piston rod used in the pump section of compatible Titan PowrTwin airless sprayers / stripers. It connects the drive to the piston assembly, converting rotational motion into linear reciprocating motion to generate high‑pressure fluid output. A precision‑ground rod ensures smooth operation and consistent pressure.
| Part Number | 236-948A |
|---|---|
| Part Description | Long Piston Rod |
| Brand | Titan |
| Fits |
PowrTwin 4900, 6900, 8900, 12000 Plus DI, 12000 Plus |
| Condition | New |
The Titan 236-948A Long Piston Rod is a precision‑machined component inside the fluid pump of PowrTwin models. It connects the drive assembly (crank or wobble plate) to the piston or plunger. As the drive rotates, the piston rod moves linearly, drawing paint into the pump cylinder on the intake stroke and forcing it out at high pressure on the output stroke.
Over time, the piston rod can become scored, bent, or worn at the bearing surfaces, causing pressure loss, erratic output, or fluid leaks. Replacing a damaged rod restores pump efficiency and prevents further damage to seals and cylinders.
| Power conversion | Changes rotary drive motion into linear pump action |
|---|---|
| Pressure generation | Forces fluid out of the cylinder at high PSI |
| Wear surface | Hardened surface reduces friction against seals and cylinder |
| Stroke length | Long rod design provides greater volume per cycle for higher output |
| Scoring or galling | Visible vertical scratches or metal transfer on the rod surface |
|---|---|
| Bending | Rod is not perfectly straight, causing binding or uneven wear |
| Pressure loss | Pump cannot reach or maintain rated pressure even after repacking |
| Excessive seal wear | Repeated seal failures may indicate a damaged rod surface |
Titan 236-948A is compatible with the following Titan PowrTwin models. Always verify fitment using the correct parts diagram for your specific machine.
| Brand / Model | Component |
|---|---|
| PowrTwin 4900 | Long piston rod |
| PowrTwin 6900 | Long piston rod |
| PowrTwin 8900 | Long piston rod |
| PowrTwin 12000 Plus DI | Long piston rod |
| PowrTwin 12000 Plus | Long piston rod |
When replacing the piston rod, these associated components should be inspected and often replaced simultaneously to ensure a complete pump rebuild.
Seals wear against the rod; a new rod should be installed with fresh seals to prevent immediate leakage.
Inspect for scoring or out‑of‑round condition that could damage the new rod.
Worn bushings cause side‑loading and premature rod failure.
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