Hydraulic oil in the system can be under pressures over 3000 psi with 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 live pressure. Relieve
pressure in hydraulic oil tank by loosening filler cap very slowly. Failure to follow these precautions could result in serious
At operating temperatures, hydraulic oil is hot and under pressure. Hot oil is hot and under pressure. Hot oil can cause injuries.
Allow hydraulic oil to cool before disconnecting any hydraulic lines.
Wipe the area clean around all hydraulic connections to be opened during removal and disassembly. Cap oil lines and plug holes
after removing lines. Contamination of the hydraulic system could result in premature failure.
HYDRAULIC OIL LEVEL
(1) Visually inspect hydraulic oil level gage
to determine if tank is filled to proper
(2) Hydraulic oil should be visible between
ADD and FULL marks.
(a) If hydraulic oil is visible between
ADD and FULL marks, go to
Step 2 of this fault.
(b) If hydraulic oil is not visible, inspect
tank for leaks. Then fill tank to
FULL mark with hydraulic oil
IL LEVEL GAGE
HYDRAULIC OIL TANK