220 S450 Operation & Maintenance Manual
(S450) LOADER SPECIFICATIONS (CONT’D)
Hydraulic System
Pump Type Engine driven, gear type
Pump Capacity 63,2 L/min (16.7 U.S. gpm)
System Relief at Quick Couplers 22,4 – 23,1 MPa (224 – 231 bar) (3250 – 3350 psi)
Filter (Hydraulic / Hydrostatic) Replaceable beta 10 micron = 200, drop in element
Filter (Charge) Replaceable beta 10 micron = 200, drop in element
Hydraulic Cylinders: Double-acting; tilt cylinders have cushioning feature on dump and rollback
Lift Cylinder (2):
Bore Diameter 50,8 mm (2.00 in)
Rod Diameter 31,8 mm (1.25 in)
Stroke 665,2 mm (26.19 in)
Tilt Cylinder (2):
Bore Diameter 60,4 mm (2.38 in)
Rod Diameter 31,8 mm (1.25 in)
Stroke 356,9 mm (14.05 in)
Control Valve – Standard
3-Spool, open centre, manually operated with spring detent for lift float;
Electrically controlled auxiliary spool
Control Valve – ACS and SJC
3-Spool, open centre with electric actuator controlled lift with float and tilt;
Electrically controlled auxiliary spool
Fluid Lines SAE Standard tubelines, hoses, and fittings
Hydraulic Function Time:
Raise Lift Arms 2.6 seconds
Lower Lift Arms 2.4 seconds
Bucket Dump 2.0 seconds
Bucket Rollback 1.5 seconds
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