TM10-3930-660-20 12-8. SBRVICE BRAKE HYDRAULIC ACCUMULATOR -  REPLACE/REPAIR/TEST This task covers: a. Removal b. Disassembly c. Assembly d.  Installation e. Testing Initial Setup Tools Tool Kit, Automotive Mechanics Materials/Parts Container Hydraulic Oil (App. C, Item 35) Kit,  Accumulator  Charging Soap Solution (App. C, Item 45) Cap and Plug Set Equipment  Condition Vehicle parked on level ground. All wheels blocked. WARNING Hydraulic oil in the system can be under pressures over 3000 psi with the engine OFF . ALWAYS relieve pressure in hydraulic lines before attempting to remove any component in the hydraulic system. With engine OFF, starter switch in RUN position, and MLRS attachment on the ground, move control levers through all operating positions several times to relieve line pressure. Relieve  pressure in hydraulic oil tank by loosening filler cap very slowly. Failure to follow these precautions could result in serious personal injury. WARNING At operating temperatures, hydraulic oil is hot and under pressure. Hot oil can cause injuries. Allow hydraulic oil to cool before disconnecting any hydraulic lines. 12-22

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