1.111 HYDRAULICS Installation NOTE: Note the position of the machined flats on the cylinder rear attachment pin, they must face forwards. 1. Installation is the reverse of the above procedure. 2. Refer to page 1.66, check the hydraulic level and replenish tank before engine is started. 3. Purge the hydraulic system by starting the engine and operating the extension, crowd and auxiliary services to fully extend and retract cylinders several times. 4. Refer to Page 1.66, check the hydraulic level and replenish if necessary.