UPPERSTRUCTURE / Signal Control Valve REMOVE AND INSTALL SIGNAL CONTROL VALVE IMPORTANT: Release any pressure in the hydraulic oil tank before doing any work. (Refer to BLEED AIR FROM HYDRAULIC OIL TANK on W1-4-1.) Removal 1. Open the engine cover. Remove bolts (3) (4 used). Remove covers (1, 2). : 17 mm 2. Remove bolt (4). Remove the clip band. W1V7-02-08-001 : 17 mm 3. Remove all connectors, hoses and pipes from signal control valve (5). 5 6 Clip Band : 19 mm, 22 mm 4. Attach a nylon sling onto the body of signal control valve (5). Hold signal control valve (5). 7 4 CAUTION: Signal control valve (5) + bracket (7) weight: 21 kg (46 lb) 5. Remove bolts (8) (3 used).
Hoist and remove signal control valve (5) and bracket (7) from the control valve. Control Valve W1V1-02-09-001 : 22 mm 6. Remove socket bolts (6) (4 used). Remove signal control valve (5) from bracket (7). : 8 mm Control Valve W1V1-02-09-002 W2-9-1 2 1 3 5 6 8 7 5 8 8