Removal - TM-10-3930-673-20-20548

TM 10-3930-673-20-2

18-4. PISTON PUMP REPLACEMENT (CONT)

b. Removal.

WARNING

Hydraulic oil in system can be under pressures over 3000 psi (20685 kPa) with engine OFF.

ALWAYS relieve pressure in hydraulic hoses before attempting to remove any component in

hydraulic system. With engine OFF, starter switch in RUN position, and attachment on ground,

move control levers through all operating positions several times to relieve hydraulic pressure.

Relieve pressure in hydraulic oil tank by loosening filler cap very slowly. Failure to follow these

precautions could result in serious injury or death to personnel.

At operating temperatures, hydraulic oil is hot and under pressure. Hot oil can cause injury to

personnel. Allow hydraulic oil to cool before disconnecting any hydraulic hoses.

When working under boom, always use blocks or other supports. Combined weight of boom and

attachment is approximately 6300 lb (2857.63 kg). Failure to adequately support boom could result

in severe injury or death to personnel.

CAUTION

Wipe area clean around all hydraulic connections to be opened during removal and disassembly. Cap

oil hoses and plug holes. Contamination of hydraulic system could result in equipment failure.

NOTE

If more than one hydraulic hose is to be removed, tag and mark hoses to ensure proper installation.

Use suitable container to catch any hydraulic oil that may drain from system.

18-14

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