UPPERSTRUCTURE / Control Valve Assemble Control Valve (4-Spool Control Valve) 1. Install O-rings (3) (8 used) to housing (22). Install cover (24) to housing (22) with socket bolts (1) (2 used). Install cover (23) to housing (22) with socket bolts (1) (5 used). : 10 mm : 100 N m (10 kgf m, 74 lbf ft) 2. Apply LOCTITE #262 to the thread part of bolts (4) (4 used). Install spring guide (5), sleeve (6), spring (7) and spring guide (5) to spools (20, 12, 10, 8) with bolt (4) respectively. : 10 mm : 100 N m (10 kgf m, 74 lbf ft) 3. Install O-ring (16) and backup ring (17) to cap (18). Install check valve (13), spring (14) and spacer (15) to spool (12). Install cap (18) to spool (12). :
80 N m (8 kgf m, 59 lbf ft) IMPORTANT: Apply hydraulic oil onto the surface of spools (9, 11, 19, 21). 4. Rotate and install spools (8, 10, 12, 20) to housing (22) slowly. 5. Install O-rings (3) (8 used) to housing (22). Install cover (2) to housing (22) with bolts (1) (6 used). : 10 mm : 10 mm : 100 N m (10 kgf m, 74 lbf ft) W2-5-57