HYDRAULIC HOSES, TUBES, AND FITTINGS REPLACEMENT/REPAIR

TM 10-3930-673-20-2

18-25. HYDRAULIC HOSES, TUBES, AND FITTINGS REPLACEMENT/REPAIR

This Task Covers:

a. Removal

c. Repair

b. Inspection

d. Installation

INITIAL SETUP

Equipment Condition

Tools and Special Tools

Wheels chocked

Tool Kit, General Mechanic's: Automotive

Materials/Parts

Tool Kit, Machinists: Post, Camp and Station (Item 19,

Oil, Lubricating, Transmission/Hydraulic (Item 23,

Tool Outfit, Hydraulic System Test and Repair

Tags (Item 39, Appendix C)

(HSTRU) (Item 20, Appendix F)

Tie Wraps (Item 41, Appendix C)

Cap and Plug Set (Item 3, Appendix F)

Container, 1 gal (3.8 l)

a. Removal.

WARNING

Hydraulic oil in system can be under pressures over 3000 psi 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.

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

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

Remove caps and plugs as hoses are installed. Wipe all sealing surfaces on hydraulic components

and hoses clean and dry. Apply light coating of clean hydraulic oil to all seals as installed.