1-17
MAIN PUMP
MAIN PUMP
2)
2)
FAN AND BRAKE PUMP
FAN AND BRAKE PUMP
3)
3)
Item
Specification
Type
Variable piston pump
Capacity
54+38 cc/rev
Maximum operating pressure
280 kgf/cm
2
(3980 psi)
Rated oil quantity
185
ℓ/
min (48.8 U.S.gpm / 40.6 U.K.gpm)
Maximum speed
2230 rpm
Item
Specification
Type
Variable piston pump
Capacity
28 cc/rev
Maximum operating pressure
250 kgf/cm
2
(3560 psi)
Rated oil quantity
56
ℓ/
min (15.6 U.S.gpm)
Maxmum speed
2230 rpm
MAIN CONTROL VALVE
MAIN CONTROL VALVE
4)
4)
Item
Specification
Type
2 spool
Operating method
Hydraulic pilot assist
System pressure
280 kgf/cm
2
(3980 psi)
Overload relief valve pressure
340 kgf/cm
2
(4840 psi) /
★
300 kgf/cm
2
(4270 psi)
★
: Bucket dump
ELECTRO-HYDRAULIC BLOCK
ELECTRO-HYDRAULIC BLOCK
5)
5)
Item
Specification
Type
Proportional pressure reducing vlave
Control current
0~950 mA
Resistance
10.5
Ω
Normal flow
12
ℓ/
min (3.17 U.S.gpm)
REMOTE CONTROL VALVE
REMOTE CONTROL VALVE (EH TYPE)
6)
6)
Item
Specification
Type
Fingertip
Axle
Single axle for boom, bucket, auxiliary
Operating voltage
4.5~5.5 V
Output signal
0.5~4.5 V (neutral 2.5 V)
Содержание HL955
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