Hitachi ZW 550-G, Technical Manual

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03-5
Measurement for Performance Check
Standard Measurement Values for Performance Check
For Europe (S/N 9001~)
Measurement conditions
Temperature of torque converter oil: 50 ~ 80°C (120 ~ 180°F)
Temperature of hydraulic oil: 50 ~ 80°C (120 ~ 180°F)
Temperature of engine coolant: 50 ~ 80°C (120 ~ 180°F)
Item
Standard measurement val-
ues for performance check
Remarks
System
Measurement item
Normal Power
Engine
Engine speed
(min
-1
) (rpm)
Minimum no-load speed, Low Idle (LI) 775 ± 50
Maximum no-load speed, High Idle (HI) 2,250 ± 50
Maximum speed in torque converter stall mode 2,130 ± 100
Maximum speed in multiple control valve relief mode 2,140 ± 100
Maximum speed in torque converter stall plus multiple
control valve relief mode
1,520
+150
- 100
1,650
+150
- 100
T
ransmission
Clutch pressure
MPa (kgf/cm
2
) (psi)
Engine speed
Low idle
1st speed 2.2~2.3 (22~23) (313~327)
Except 1st speed 2.5~2.6 (25~26) (356~370)
High idle
1st speed 2.5~2.6 (25~26) (356~370)
Except 1st speed 2.6~2.9 (27~30) (384~427)
Clutch time lag
(sec) Neutral
→
Forward 1st speed
(engine speed: 1,500 min
-1
(rpm))
0.3 ± 0.1 Before wheels move
Hydraulic line
Cylinder drift
(when boom and
bucket are horizontal
and with no load)
(mm/min) (in/min)
Boom cylinder 3 (1/8) or less
Bucket cylinder 4 (5/32) or less
Boom rising time
(no load)
(sec)
Engine speed
Idling (LI) 23 ± 3.0
1,500 min
-1
(rpm) 10.5 ± 1.0
Maximum (HI) 8.4± 0.5
Full steering time
(sec)
Engine speed
Idling (LI) 5.0 ± 0.5
1,500 min
-1
(rpm) 3.9 ± 0.3
Maximum (HI) 3.9 ± 0.3