6 - Maintenance87Nozzle Tubes and FittingsPoor sealings are usually caused by:• Missing O-rings or gaskets• Damaged or incorrectly seated O-rings• Dry or deformed O-rings or gaskets• Foreign objectsIn case of leaks:DO NOT overtighten. Disassemble, check condition and position of O-ring or gasket. Clean, lubricate and reassemble.The O-ring must be lubricated ALL THE WAY ROUND, before fitting it onto the nozzle tube. Use non-mineral lubricant.For AXIAL connections, a little mechanical leverage may be used.For RADIAL connections, only tighten by hand.Adjustment of 3-Way ValveThe large ball valve (type s93) can be adjusted, if it is too tight tooperate - or if it is too loose (=liquid leakage).• Correct setting is when the valve can be operated smoothly by onehand.Use a suitable tool and adjust the toothed ring inside the valve as shownon the drawing.μ ATTENTION! The small ball valves (type s67) cannot be adjusted.Retighten the FrameThe frame are two sections bolted together. Also the drawbar is bolted to the frame. These bolts need to be tightenedcorrectly. Check regularly if bolts are tightened according to the specified torques below.180 Nm250 Nm250 Nm250 Nm180 Nm180 Nm
