12-8. SERVICE BRAKE HYDRAULIC ACCUMULATOR REPLACEMENT/REPAIR/TEST
This Task Covers:
c. Test and Adjust Service Brake
Tools and Special Tools
Vehicle parked on level ground
Tool Kit, General Mechanic's: Automotive
(Item 18, Appendix F)
Cap and Plug Set (Item 3, Appendix F)
Kit, Accumulator Charging
Hydraulic Oil (Item 23, Appendix C)
(Item 17, Appendix B)
Soap Solution (Item 35, Appendix C)
Container, 1 gal (3.8 l) capacity
· 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.
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.
Use suitable container to catch any hydraulic oil that may drain from system.