Keep your hydraulic slide-out system operating reliably with this genuine Lippert Hydac replacement cartridge valve. Engineered to OEM specification, it fits Lippert hydraulic slide-out manifolds and includes a turn-and-lock set screw for manual override -- so you can retract your slide-out even if you lose 12V power on the road.
Hydraulic cartridge valves are the workhorses inside your slide-out manifold. When one fails -- due to contamination, seal wear, or an electrical fault -- the affected slide may refuse to extend or retract entirely. Replacing only the failed cartridge is far faster and more economical than replacing the entire valve manifold block.
This Lippert part (177094) is the direct OEM replacement for the Hydac WS08W-01T-C-N-0 cartridge valve used throughout Lippert's hydraulic slide-out platform. It carries cross-reference part numbers for Grand Design, Heartland, Jayco, Keystone, and Winnebago coaches built around the Lippert hydraulic system, making it straightforward to confirm correct fitment against your coach's parts documentation.
Turn-and-lock set screw lets you manually actuate the valve and retract your slide-out during a power or electrical failure -- no hydraulic pressure required.
Manufactured to the Hydac WS08W-01T-C-N-0 specification, ensuring proper flow and pressure characteristics for the Lippert hydraulic platform.
Matches part numbers for Grand Design, Heartland, Jayco, Keystone RV, and Winnebago, covering a wide range of hydraulic slide-out coaches.
Threads directly into the existing Lippert manifold body -- no machining, adapters, or manifold replacement needed for a straightforward service repair.
The Lippert hydraulic slide-out system uses a manifold with multiple solenoid-operated cartridge valves to direct fluid flow to the slide-out ram cylinders. Each cartridge contains the valve spool, seals, and spring that control directional flow. A failed or stuck cartridge typically presents as a slide that moves in only one direction, moves slowly, or does not move at all despite the pump running.
Replacing the cartridge -- rather than the manifold -- is the correct first diagnostic step once fluid level and electrical signals to the solenoid have been confirmed good. Always depressurize the hydraulic system and clean the manifold surface before cartridge removal to prevent contamination of the bore.
The integrated turn-and-lock set screw allows a technician or owner to manually shift the valve spool without power. This is critical when a solenoid coil fails or a 12V supply issue prevents normal operation. Rotate the set screw to override, retract the slide, then replace the valve or diagnose the electrical fault at a shop.
Cross-reference your coach's parts manual using the part numbers listed below. Lippert hydraulic slide-out manifolds accept this cartridge style across multiple production years, but visually confirm the manifold body markings or consult the OEM parts list for your specific coach model and year before removing the old valve.
Always relieve hydraulic pressure from the system before removing any cartridge valve. Failure to do so can result in sudden fluid ejection and personal injury. Refer to your Lippert hydraulic system documentation for the proper pressure-relief procedure before beginning service.