hitachi — DISASSEMBLE BRAKE VALVE

UNDERCARRIAGE / Travel Device Disassemble Brake Valve 1. Remove plugs (1) (2 used) from valve housing (6). 6. Remove springs (10) (2 used) and poppets (9) (2 used) from valve housing (6) by using a magnet. 7. Remove plug (13) from valve housing (6). : 41 mm 2. Remove springs (3) (2 used) and stoppers (5) (2 used) from valve housing (6) by using a magnet. 3. Remove spool (4) from valve housing (6) by using a magnet. 4. Remove plug (7) from valve housing (6). The orifice inserted into the hole has been applied by using LOCTITE. Do not remove the orifice unless necessary. : 6 mm 8. Remove spring (15) and spool (16) from valve housing (6) by using a magnet. : 6 mm IMPORTANT:

Do not disassemble relief valve (12) as the set pressure changes. IMPORTANT: Do not move the piston installed to the outer surface of relief valve (12). O-ring may be damaged by the hole on cartridge. 5. Remove relief valves (12) (2 used) from valve housing (6). : 41 mm 12 Piston W1V7-03-02-009 W3-2-29