PISTON PUMP REPLACEMENT - TM-10-3930-660-24-10753

TM 10-3930-660-24-1

PISTON PUMP REPLACEMENT

0174 00

THIS WORK PACKAGE COVERS

Removal, Installation

INITIAL SETUP

Tools and Special Tools

References

Tool kit, general mechanic's (Item 39, WP 0324 00)

Shop equipment, common no. 1 (Item 20, WP 0324

Personnel Required

00)

Two

Materials/Parts

Equipment Condition

Cap and plug set (Item 8, WP 0323 00)

Oil, lubricating (Item 32, WP 0323 00)

Vehicle parked on level ground (TM 10-3930-660-

10)

Tag, marker (Item 57, WP 0323 00)

Boom raised (TM 10-3930-660-10)

Lockwasher (19)

Transmission cover removed (WP 0150 00)

O-ring (21)

REMOVAL

WARNING

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

MLRS attachment is approximately 6,300 lb (2858 kg). Failure to adequately support the boom could

result in severe injury or death.

Do NOT remove hydraulic tank filler cap or disconnect or remove any hydraulic system line or fitting

unless hydraulic system pressure has been relieved. Hydraulic system pressure can be over 3,000 psi

(20685 kPa), even with engine and pump OFF. To relieve pressure, lower all hydraulic attachments to

the ground and shut down engine. Move control levers through all operating positions, then SLOWLY

loosen hydraulic tank filler cap. After maintenance, tighten all connections before applying pressure.

Escaping hydraulic fluid under pressure can penetrate the skin, causing injury or death.

At operating temperature hydraulic oil is hot. Allow hydraulic oil to cool before disconnecting any

hydraulics. Failure to do so could result in injury.

CAUTION

Wipe the area clean around all hydraulic connections to be opened during removal and disassembly. Con-

tamination of the hydraulic system could result in premature failure.

NOTE

If more than one hydraulic line is to be removed, tag lines to ensure proper installation. Use suitable con-

tainer to catch any hydraulic oil that may drain from system.