Operation & Maintenance Manual for WP7 Euro Ⅵ Vehicle Diesel Engine 1.9 How to select proper viscosity 1.10 Auxiliary materials The applicable positions are shown in the following table: Table 1-4 Auxiliary materials for WP7 Euro Ⅵ diesel engines 6 Lubricating oil SAE Viscosity grade Applicable ambient temperature (℃) 5W/30 -30~35 10W/30 -25~35 15W/40 -20~40 20W/50 -15~50 Gear oil 85W/90 -15~49 80W/90 -25~49 85W/140 (viscosity higher than 85W/90) -15~49 S/N Name Color Usage and Application 1 Molybdenum disulfide, oil solution Dark gray Acting as a lubricant before the lubricating oil pressure is built up. For example: coated on the intake valve stem etc.
2 Loctite 242 Blue Coated on the threads and outside surface of bearings to prevent against any potential looseness due to vibration, with medium strength. 3 Loctite 262 Red Coated on the outside surface of threads, playing the role of locking, sealing and resistance to looseness due to shock, with high strength. 4 Loctite 275 Green Coated on the pipeline and connection portion 5 Loctite 510 Red (Orange ) Coated on the shiny metal surface to function as sealing. For example: the joint faces of the cylinder block and flywheel housing.
6 Loctite 277 Red Suitable for sealing the space between core and hole and applied to the oil chamber and oil passage, such as the cylindrical surface of bowl-plug. 7 (Loctite 648) Green Coated on the shining metal surface to function as fixing, such as the inside hole of tensioning bearing and outside surface of the shaft etc.