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TM 10-3930-673-20-1
WARNING
Hydraulic oil in system can be under pressures over 3000 psi (20685 kPa) with engine OFF. Always relieve pressure in hydraulic
lines before attempting to remove any component in hydraulic system. With engine OFF, starter switch in RUN position, and
MLRS attachment on 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
personal injury.
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.
CAUTION
Wipe area clean around all hydraulic connections to be opened during removal and disassembly. Cap oil lines and plug holes after
removing lines. Contamination of hydraulic system could result in premature failure.
HYDRAULIC OIL LEVEL
VISUAL INSPECTION
(1) Visually inspect hydraulic oil level gage
to determine if tank is filled to proper
level.
(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 the fault.
(b) If hydraulic oil is not visible, inspect
tank for leaks. Then fill tank to
FULL mark with hydraulic oil
(Para 18-2).
HYDRAULIC
O
IL LEVEL GAGE
HYDRAULIC OIL TANK
TR01283
2-859

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