HYDRAULIC SYSTEM VALVE MAINTENANCE - CONTINUED
BRAKE DRAIN SHUT-OFF VALVE REMOVAL
Relieve pressure in both brake circuits by opening two brake drain shut-off valves (WP 0188 00).
Perform the following steps to remove each of two brake drain shut-off valves.
Remove tiedown straps and clamps, as needed. Discard tiedown straps.
Remove three hoses (88) and O-rings (89) from valve (87). Discard O-rings.
Refer to Foldout, FO-2 as a guide to remove hoses and fittings from valve or component.
Note position of tiedown straps and clamps to aid in installation.
Remove valve (87) from mounting plate (91).
Remove two fittings (90) from valve (87).
BRAKE DRAIN SHUT-OFF VALVE INSTALLATION
Refer to General Maintenance Instructions (WP 0284 00) for complete instructions on connecting
hydraulic hoses and applying proper torque.
Perform steps 1 thru 5 to install each of two brake drain shut-off valves.
Perform step 1 to install fittings removed from old valve, if new valve is being installed.
Install two fittings (90) on valve (87).
Lubricate and install three new O-rings (89).
Install and tighten three hoses (88) on valve (87).
Install valve (87) on mounting plate (91).
Install clamps and new tiedown straps as needed, in same position as noted during removal.
At hydraulic reservoir, open any ball valve that may have been closed.
Start engine (TM 10-3930-675-10) and check for leaks.