UPPERSTRUCTURE / Pump Device ALLOWABLE LIMITS FOR CYLINDER BLOCK The Repair Limits for Cylinder, Valve Plate and Swash Plate (Shoe Plate) Roughness when repair is necessary 3-Z Valve plate (sliding portion) Swash plate (shoe plate portion) Cylinder (sliding portion) Standard roughness (values after being repaired) Less than 0.4Z (by lapping) W2-4-38