a220 Hydraulic Schematic v-0268legend-2

FILTER - HYDRAULIC (CANISTER)
SPRING LOADED FILTER BY-PASS
VALVE: 45-55 PSI (3,1-3,8 Bar)
RESERVOIR:
Capacity . . . . . . 18.8 Qts. (17.8 L)
1
FILTER - CASE DRAIN (90 Micron)
2
3
4
15
PULL BUTTON ACTIVATED
DIRECTIONAL CONTROL VALVE - LIFT
ARM BY-PASS
16
FILTER - BICS CONTROL VALVE
(SCREEN)
17
ONE WAY RESTRICTOR - BOOM DOWN
18
LOAD CHECK VALVE- LIFT AND TILT
19
RELIEF VALVE - MAIN:
2950-3050 PSI (203-210 Bar)
at Front Quick Couplers
5
20
RELIEF VALVE - PORT:
3500 PSI (241 Bar)
21
ANTICAVITATION VALVE
22
RELIEF/ANTICAVITATION VALVE -
PORT (TILT BASE END)
3500 PSI (241 Bar)
23
ONE WAY RESTRICTOR VALVE
24
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE - AUXILIARY
25
RELIEF VALVE - PORT: . . . . . (Optional)
3500 PSI (241 Bar)
26
RELIEF/REPLENISHING VALVE - HIGH
PRESSURE: 5000 PSI (345 Bar)
27
CHARGE PRESSURE SWITCH
28
RELIEF VALVE - CHARGE:
120 degrees F. (53 degrees C.)Fluid
350 PSI (24,1 Bar) at High Engine Idle
34
35
36
PILOT ACTIVATED DIRECTIONAL
CONTROL VALVE - HYDRAULIC
POWERED BOB-TACH
FLOW DIVIDER ADJUSTMENT VALVE
PILOT ACTIVATED DIRECTIONAL
CONTROL VALVE - FLOW CONTROL
SPOOL
PILOT ACTIVATED DIRECTIONAL
CONTROL VALVE - LIFT CONTROL
CHECK VALVE - BUCKET POSITION
VALVE
PILOT ACTIVATED DIRECTIONAL
CONTROL VALVE - UNLOADING
SPOOL
PILOT ACTIVATED DIRECTIONAL
CONTROL VALVE - TILT CONTROL
DIFFERENTIAL PRESSURE SWITCH:
36-44 PSI (2,5-3,0 Bar)
FIXED CAPACITY DISPLACEMENT
BIDIRECTIONAL HYDROSTATIC
MOTOR
6
7
8
9
10
11
12
13
Printed in U.S.A.
14
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE - BICS CONTROL
29
CHARGE PUMP
12.0 GPM (45,4 L/min.) at High Engine Idle
30
HYDRAULIC PUMP . . . . . . . . . Gear Type
20.0 GPM (75,8 L/min.) at High Engine Idle
31
DRIVE MOTOR SHUTTLE VALVE
32
SHUTTLE RELIEF VALVE:
200 PSI (13,8 Bar)
33
REAR AUXILIARY BLEED SHUTTLE VALVE
LOAD CHECK VALVE - SELECT VALVE
(HIGH FLOW)
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE - HIGH FLOW
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE - DIVERTER
A220 HYDRAULIC/HYDROSTATIC SCHEMATIC
WITH HIGH FLOW AND TWO SPEED VALVE OPTION
S/N 519611124 - 519611311
S/N 519711004 - 519711140
(PRINTED APRIL 2004)
V-0268legend
LEGEND
1 of 2
Dealer Copy -- Not for Resale
37
38
39
40
50
PRESSURE COMPENSATED FLOW
CONTROL
V-0268legend (4-7-04)
NOTE: Unless otherwise specified
springs have NO significant
pressure value.
51
RELIEF VALVE - PORT:
3500 PSI (241 Bar)
52
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE - BUCKET POSITION
VALVE (ON/OFF)
FIXED CAPACITY DISPLACEMENT
BIDIRECTIONAL HYDROSTATIC
MOTOR
53
HYDRAULIC BRAKE - SPRING APPLIED -
PRESSURE TO RELEASE
54
55
56
57
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE - TWO SPEED
41
CHECK VALVE - BICS CONTROL VALVE
42
LIFT ARM BY-PASS RESTRICTOR
43
CHECK VALVE - AUXILIARY
44
45
VARIABLE CAPACITY DISPLACEMENT
BIDIRECTIONAL HYDROSTATIC PUMP
46
TWO-STAGE RELIEF
1000/2000 PSI (69/138 Bar)
47
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE (TWO COIL)
48
RELIEF VALVE - 1200 PSI (82,7 Bar)
49
RESTRICTOR - 0.015 inch (0,381 mm)
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE - MAKE-UP
PUSH BUTTON SOLENOID ACTIVATED
DIRECTIONAL CONTROL VALVE -
BRAKE
58
BRAKE DIAGNOSTIC PLUG
RELIEF VALVE - MAIN (HIGH FLOW)
3000 PSI (207 Bar)
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE (TWO COIL)
PILOT TO OPEN CHECK VALVE
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE - BLEED OFF
59
PILOT ACTIVATED DIRECTIONAL
CONTROL VALVE - TWO SPEED
DRIVE MOTOR
60
HYDRAULIC HIGH FLOW PUMP -
Gear Type
10.0 GPM (37,9 L/min.) at High Engine Idle
61
SELECT VALVE RESTRICTOR
FILTER - CASE DRAIN (Attachment)
62
HYDRAULIC STEERING PUMP- Gear Type
13.0 GPM (49,2 L/min.) at High Engine Idle
63
FILTER - STEERING (10 MICRON)
64
SOLENOID ACTIVATED
PROPORTIONAL FLOW CONTROL
VALVE - STEERING
65
SOLENOID ACTIVATED PRESSURE
CONTROL VALVE
0-2000 PSI (0-138 Bar)
66
STEERING CYLINDER
67
CHECK VALVE - 270 PSI (18,6 Bar)
68
PRESSURE CONTROL PILOT
VALVE - 2 COILS
0 - 0.085 Ampere
69
DISPLACEMENT CONTROL SPOOL
70
PUMP SERVO
71
FRONT AUXILIARY MANUAL PRESSURE
BLEED-OFF VALVE
A220 HYDRAULIC/HYDROSTATIC SCHEMATIC
WITH HIGH FLOW AND TWO SPEED VALVE OPTION
S/N 519611124 - 519611311
S/N 519711004 - 519711140
(PRINTED APRIL 2004)
V-0268legend
LEGEND
2 of 2
Dealer Copy -- Not for Resale