TM 10-3930-659-20 10-12.    LEFT BRAKE VALVE-TO-RIGHT BRAKE VALVE HOSES AND FITTINGS REPLACEMENT. This task covers: a. Removal b. Installation INITIAL SETUP: Equipment Conditions: Materials/Parts: •    Parking brake set (see TM 10-3930-659-10). • Rags (Item 27, Appendix C) •    Frame locking bar Installed (see TM  10-3930- • Eight preformed packings 659-10). •    Right side cab skirt removed (see paragraph 14-6).   References: •     Low brake pressure switch removed (see para-    • TM 10-3930-659-10 graph 6-36). Tools/Test Equipment: •    General mechanic's tool kit (Item 44, Appendix F) NOTE A suitable container should be used to catch any draining hydraulic fluid.  Ensure that all spills are properly cleaned. a. REMOVAL WARNING Pressure  stored  In  accumulator  Is  approximately  500  psi  (3448  kPa).    Ensure that accumulator pressure Is relieved before removing service brake hoses or components.    Failure  to  follow  this  warning  may  result  in  serious  Injury  or death to personnel. 10-35