152.Only apply verylight pressure to the surface.

167.Measure thevolume of the oil carefully.

166.Make surethat the nutsaretight.

1、There are three jacking points on the fuselage

164.Make surethat the tension in the cables is correct

163.Operatetheengine at 100%thrust.

162.Slowly turn the vane

161.Apply sealant on the outer surface.

160.Find the damaged areas.

159.Make surethat the pipe is notclogged.

158.Replace thedefective pump.