E50 HYDRAULIC/HYDROSTATIC SCHEMATIC

S/N AHHE11001 AND ABOVE

(PRINTED APRIL 2013)
V-1399legend

LEGEND
1 HYDRAULIC RESERVOIR: Pressurized 17 SOLENOID ACTIVATED DIRECTIONAL 34 PORT RELIEF VALVE (With Anti-Cavitation 54 CHECK VALVE – Brake Release
with Fill Strainer CONTROL VALVE – Boom Offset / Valve) - (ARM Cylinder) 4206 PSI (290 bar)
Reservoir Capacity (at Site Gauge) Secondary Auxiliary Hydraulics – If Equipped) 55 PILOT ACTIVATED DIRECTIONAL
35 PORT RELIEF VALVE (With Anti-Cavitation
. . . . . .16.0 qt. (15.1 L) Valve) - (ARM Cylinder) 4206 PSI (290 bar) CONTROL VALVE - Second Auxiliary
System Capacity . . . . 58.0 qt. (54.9 L) 18 SOLENOID ACTIVATED DIRECTIONAL (Optional)
CONTROL VALVE – Boom Offset / 36 PORT RELIEF VALVE - (With Anti- 56 SOLENOID ACTIVATED DIRECTIONAL
Secondary Auxiliary Hydraulics – If Equipped) Cavitation Valve) - (Auxiliary Pressure Port:
2 PRESSURIZED BREATHER/FILL CAP 3045 PSI (210 bar) CONTROL VALVE - Second Auxiliary (2)
with FILTER: 19 (Optional)
SOLENOID ACTIVATED DIRECTIONAL PORT RELIEF VALVE (With Anti-
6 PSI (0.4 bar) – Outlet 37
CONTROL VALVE - Two Speed Cavitation Valve) - (Auxiliary Return Port:
0.6 PSI (0.04 bar) - Inlet 3045 PSI (210 bar) 57 PORT RELIEF VALVE (With Anti-Cavitation
20 SOLENOID ACTIVATED DIRECTIONAL Valve) - (Secondary Auxiliary)
3 HYDRAULIC FILTER ELEMENT 38 PORT RELIEF VALVE (With Anti-Cavitation
CONTROL VALVE - Work group Lockout 4000 PSI (276 bar)
15 Micron Valve) - (Boom Cylinder) 4206 PSI (290 bar)
21 NOT USED FOR THIS MODEL 58 PORT RELIEF VALVE (With Anti-Cavitation
4 FILTER BY-PASS 50 PSI (3.44 bar) 39 PORT RELIEF VALVE (With Anti-Cavitation
Valve) - (Boom Cylinder) 4206 PSI (290 bar) Valve) - (Secondary Auxiliary)
4000 PSI (276 bar)
5 CASE DRAIN FILTER 40 PORT RELIEF VALVE (With Anti-Cavitation
22 NOT USED FOR THIS MODEL 59 TEST PORT - "JP3" PORT - Pressure
Valve) - (Blade Cylinder) 3771 PSI (260 bar)
6 Reducing Valve
HYDRAULIC BY-PASS SWITCH 41 CHECK VALVE: 45 PSI (3,1 bar) With a
1,222 mm (0.045 in) Orifice 60 FACTORY FILL PORT
7 HYDRAULIC PISTON PUMP . . . . . . 23 SOLENOID ACTIVATED DIRECTIONAL
36.6 GPM (138,5 L/min.) at High Engine RPM CONTROL VALVE - Male Coupler 42 CHECK VALVE: 60 PSI (4,2 bar) 61 TEST PORT (CAP)
8 PUMP MARGIN SPOOL - 24 SOLENOID ACTIVATED DIRECTIONAL 43 ORIFICE – Straight Travel 0.31 inch (0,8 mm)
232 PSI (16 bar) CONTROL VALVE - Female Coupler 62 NOT USED FOR THIS MODEL
25 ACCUMULATOR 44 COUNTERBALANCE VALVE - With restrictors
9 TORQUE LIMITER 63 NOT USED FOR THIS MODEL
45 TWO SPEED SHIFT SPOOL
26 FLUSHING VALVE 360 PSI (25 bar) 64 NOT USED FOR THIS MODEL
10 PUMP CONTROLLER – Back-up Relief Valve
46 CROSSPORT RELIEF VALVE – Travel Motor
3916 PSI (270 bar) 27 LOAD SENSE BLEED CARTRIDGE 65 NOT USED FOR THIS MODEL
0.185 GPM (0.70 L/min.) 3810 PSI (263 bar)
11 ORIFICE: 0.026 inch (0,66 mm)
47 NOT USED FOR THIS MODEL 66 NOT USED FOR THIS MODEL
12 ORIFICE: 0.031 inch (0,79 mm) 28 LOAD SENSE RELIEF VALVE
3626 PSI (250 bar) 48 CHECK VALVE – Anti-Drain 67 CHECK VALVE With 0.009 in. (0,23 mm) Orifice
13 PRESSURE SWITCH – Motion Alarm 29 FILTER – Control Valve CROSSPORT RELIEF VALVE (Ramp
49 68 ANTI-CAVITATION VALVE
(If Equipped) Pressure Increasing Type):
30 PRESSURE SENSOR – Auto Idle
14 SHUTTLE VALVE – Motion Alarm (If Set @: 3495 PSI (241 Bar) 69 TEST PORT – LS PORT
Equipped) 31 COMPENSATOR Crack Pressure: 1600 PSI (110 Bar)
70 NOT USED FOR THIS MODEL
50 ANTI-CAVITATION VALVE (2)
15 PRESSURE REDUCING VALVE 32 PORT RELIEF VALVE (With Anti-Cavitation
51 PILOT ACTIVATED DIRECTIONAL 71 NOT USED FOR THIS MODEL
435 PSI (30 bar) Valve) - (BUCKET Cylinder) 4206 PSI (290 bar)
CONTROL VALVE – Brake Release Valve
16 CHECK VALVE - Accumulator 72 TEST PORT – “P” PORT (Manifold)
57 PSI (3,9 bar)
33 PORT RELIEF VALVE (With Anti-Cavitation 52 TIMER VALVE: 363 PSI (25 Bar) (3.7 Sec.)
Valve) - (BUCKET Cylinder) 4206 PSI (290 bar)
53 ORIFICE - 0.016 inch (0,4 mm) NOTE: Unless otherwise specified
springs have NO significant
pressure value.

Printed in USA V-1399legend (5-1-13)

 TRAVEL MOTORS OFFSET CYLINDER
ARM CYLINDER LH SLEW MOTOR W/ BRAKE
LH MALE FEMALE
Q2 Q1 COUPLER COUPLER
THUMB CYLINDER (OPTION) Q2 Q1
ARM LOAD BOOM CYLINDER GEAR SH
T2
HOLDING T2 BOX
VALVE (OPTION) U1 M T1
T1 DB 51
2ND AUX FUNCTION
PS PG
PS BLADE CYLINDER (OPTION)
BOOM LOAD 73
46 F
C D
HOLDING 46
VALVE (OPTION)
U1 M 74
45
45 E
49
49a
Male Female 47
44 53
Pp D1 Dr 44 57
58
52
F G

P2
49
P1
BUCKET CYLINDER Pp D1 P1 P2
Dr PA PB 56
56
56a
B C A
DIRECT TO TANK
55
VALVE (IF 50
50a 50
EQUIPPED)
A CP T B

E H B D AC SWIVEL JOINT

61 CONTROL VALVE A8 B8
A10 B10 A9 B9 A5 B5 A4 B4 A3 B3 M
A7 B7 A2 B2 A1 B1
69
P1
P2

BOOM LS
TRAVEL RIGHT TRAVEL LEFT
BLADE
BUCKET 31 ARM
31
31a
AUXILIARY
31 31
31g
SLEW

31
31b 31
31c 31
31e
31f
31
OFFSET
28
30 31
31h 29
LS2

26
27

31i
31

43
32 33 35 39
34 36 37 38 40 68
a b a b a b a b
a b a b b a b a b

67 41

13 54
LH JOYSTICK RH JOYSTICK
67
67a
1 5 T1 2 OIL
4 2 2
LH REV
8 5 COOLER
RH REV
PRESSURIZED BREATHER
42 REAR RIGHT REAR RIGHT 14 HYDRAULIC PUMP Case Drain Filter
X
12 2
3
10
LEFT FRONT 3 LEFT FRONT T
1
LH FWD RH FWD
1
1 9 60
4 P T 3 4 B
P T

P1 P

BLADE CONTROL TRAVEL CONTROL 7

T

P
48 4
HYDRAULIC RESERVOIR

S L2 L1 L

REAR FRONT
2 1

11
3
59 FILTER W/ BYPASS 6

MANIFOLD
AXA AXB T1 T2 JP1 JP2 JP3 2SP OFA OFB T6

T5 T4

15 Legend
HYDRAULIC / HYDROSTATIC SCHEMATIC
ACCUMULATOR
Pressure Line
Drain Line
E50 (S/N AHHE11001 & ABOVE)
Pilot Line
25 ACC
P
72 Load Sense Line
T3 JP5 JP4
(PRINTED APRIL 2013)
7167649

PRINTED IN BELGIUM 24 23 20 19 18 17 16