Case CONSTRUCTION 3 Series - Page 28

SECTION 00 - INTRODUCTION 19
VARIABLE-DISPLACEMENT PUMP
GEAR PUMP
21E 121E 221E 321E
System Pump with adjustment depending on engine rpm
Model
AV4VG40DA1D2
/ 32R
A4VG56DA1D2
/ 32R
A4VG56DA1D2
/ 32R
A4VG71DA1D2
/ 32R
Displacement
cm
3
/rev
(in
3
/rev)
40
(2.44)
56.0
(3.41)
56.0
(3.41)
71.0
(4.33)
Power kW (hp) 35.7 (46.1) 38.0 (51) 48.3 (61.8) 52.8 (70.8)
Transmission through diesel engine direct drive, i = 1.0
Service revolutions
(= engine rated speed)
rpm 2300 2300 2500 2500
Maximum oil delivery
l/min
(gal/min)
88.8 (23.40) 131.3 (34.60) 136.0 (35.80) 173.4 (45.70)
Supply pressure
(rotation speed at full load)
bar (psi) 25 (362) 27 (391) 27 (391) 27 (391)
Adjustment start bar (psi)
50 (725)
(at 1100 rpm)
50 (725)
(at 1100 rpm)
50 (725)
(at 1100 rpm)
50 (725)
(at 1100 rpm)
Adjustment end bar (psi)
400 (5801)
(at 1800 rpm)
400 (5801)
(at 1900 rpm)
400 (5801)
(at 1900 rpm)
400 (5801)
(at 1900 rpm)
Pressure cut-off bar (psi) 430 (6234)
High-pressure relief valves
- opening -
bar (psi) 465 (6744) 467 (6773) 467 (6773) 467 (6773)
Hydraulic motor adjustment
start
bar (psi) 245 (3553) 190 (2755)
245 (3553)
(190 (2755)
“high speed”
models)
215 (3118)
Voltage V 12
21E 121E 221E 321E
Model 022R0020KB 032R0020KB 028R0020KB 032R0020KB
Displacement
cm
3
/rev
(in
3
/rev)
22.5
(1.37)
32
(1.95)
28
(1.7)
32
(1.95)
Maximum pressure bar (psi) 270 (3914)