MAINTENANCE 4.8 EVERY 10 OPERATING HOURS OR DAILY CHECK GREASE INJECTORS Legend for illustration Z 19511 (D) Injectors on slewing connection (1) Indicator stem for visual indication of injector opera- tion (2) Output adjusting screw (3) Protection cap (4) Grease fitting Check operation of all grease injectors (D) by visually watching the cycle indicator stem (1) while operating the central lubrication system manually. Stem (1) must move in and out once a complete lubrication cycle. If a cycle indicator (1) does not move during a lubrication cycle, grease supply to the lubrication point of the concerned injector is interrupted, proceed according to paragraph CORRECTIVE ACTIONS.
NOTICE If the failure is caused through a defective central lubrication system, manually lubricate at grease fittings (4) after removal of caps (3). CORRECTIVE ACTIONS 1. Check to make sure grease supply through inlet line is pro- vided. 2. Disconnect the outlet line of the respective injector. 3. Operate the central lubrication system manually. A - If now the injector works, i.e. cycle indicator stem (1) moves in and out the disconnected line or the grease passage at the lubrication point is damaged or blocked by foreign matter. Repair as necessary. B - If the injector does not work, i.e. cycle indicator stem (1) stationary, replace the respective injector. 4.
Operate the central lubrication system and re-check opera- tion of the grease injectors. REMARK If the failure is caused through a defective central lubrication system, manually lubricate at grease fittings (4) after removal of caps (3). 323