Forklift Cylinder Block Relief Valve VW028129101D – Linde

Forklift Cylinder Block Pressure Relief Valve VW028129101D: Linde Engine Oil Pressure Bypass

The VW028129101D is a cylinder block pressure relief valve for Linde diesel forklift engines. Mounted directly in the engine cylinder block, this spring-loaded valve regulates oil gallery pressure by diverting excess oil back to the sump when pressure exceeds the calibrated set point — protecting main bearings, connecting rod bearings, and camshaft journals from overpressure damage during cold starts and high-load operation. Weighing 1.0 kg in a 20x15x10 cm package, this is a machined steel valve built for the thermal cycling and vibration conditions of industrial forklift engine blocks.

As an Aowen-brand OEM-compatible replacement, this valve matches Linde factory specifications for spring rate, seat geometry, and thread dimensions. Installation requires draining the engine oil and sump, removing the old relief valve from the cylinder block port, and torquing the replacement to specification. A faulty cylinder block relief valve can cause either critically low oil pressure (stuck open from debris or broken spring) or dangerously high pressure (seized closed from varnish), both leading to complete engine failure within operational hours. This component covers a broad range of Linde applications across logistics, manufacturing, construction, and mining sectors.

Browse all pressure relief valves. Visit Linde official for specifications.