SERVICE BRAKE SYSTEM HOSES, TUBES, AND FITTINGS REPLACEMENT/REPAIR

TM 10-3930-673-20-2

12-9. SERVICE BRAKE SYSTEM HOSES, TUBES, AND FITTINGS REPLACEMENT/

REPAIR

This Task Covers:

a. Removal

b. Repair

c. Installation

INITIAL SETUP

Materials/Parts

Tools and Special Tools

Hydraulic Oil (Item 23, Appendix C)

Tool Kit, General Mechanic's: Automotive

Container

Preformed Packings (2)

Cap and Plug Set (Item 3, Appendix F)

Equipment Condition

Vehicle parked on level ground

Parking brake set (TM 10-3930-673-10)

Wheels chocked

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.

Front and rear brake system hoses, lines, and fittings are removed and installed the same way.

Note routing of hoses on vehicle for ease of installation.

Remove tie wraps as necessary.