hitachi — Solenoid Valve Set Pressure

OPERATIONAL PERFORMANCE TEST / Component Test Solenoid Valve Adjustment Procedure IMPORTANT: As O-ring is damaged and oil leak- age may cause, do not loosen ad- justing screw (8) excessively. Do not loosen adjusting screw (8) more than 2 turns. 1. Loosen lock nut (7). Turn adjusting screw (8) and adjust the set pressure. 2. After adjustment, tighten lock nut (7). 7 O-Ring 8 : 10 mm : 3 mm T1V1-04-05-004 2.0 mm (0.079 in) or less from end of Lock Nut : 3 N m (0.3 kgf m, 2.2 lbf ft) 3. After adjustment, check the set pressure. NOTE:

Standard Change in Pressure (Reference) 1 275 Change in Pressure (40) (2.8) T1V1-04-05-003 8 7 Pressure Increase Pressure Decrease W107-02-05-129 T4-5-7 7 8 1/4 1/2 3/4 kPa (kgf/cm2) (psi) 69 (0.7) (10) 137 (1.4) (20) 206 (2.1) (30)