a300 Hydraulic Schematic v-0144legend-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:
3250-3350 PSI (224-231 Bar)
at Front Quick Couplers
5
20
RELIEF VALVE - PORT:
4000 PSI (276 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
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
20.7 GPM (78,35 L/min.) at High Engine Idle
31
DRIVE MOTOR SHUTTLE VALVE
32
SHUTTLE RELIEF VALVE:
200 PSI (13,8 Bar)
33
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE - BLEED OFF REAR
AUXILIARY ("SV2")
HYDRAULIC/HYDROSTATIC SCHEMATIC
A300 (S/N 521111001 - 521111292)
(PRINTED MAY 2004)
V-0144legend
LEGEND
1 of 2
Dealer Copy -- Not for Resale
34
35
36
37
38
39
40
50
PRESSURE COMPENSATED FLOW
CONTROL
V-0144legend (4-28-04)
NOTE: Unless otherwise specified
springs have NO significant
pressure value.
51
RELIEF VALVE - PORT:
4000 PSI (276 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
at High Engine Idle
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 (83 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
FILTER (BRAKE)
LOAD SHUTTLE VALVE - BLEED OFF
PILOT ACTIVATED DIRECTIONAL CONTROL
VALVE - FOR REAR AUXILIARY - NORMALLY
CLOSED. ("P2" and "F2")
PILOT ACTIVATED DIRECTIONAL CONTROL
VALVE - FOR REAR AUXILIARY - NORMALLY
OPEN ("D1" and "P1")
PILOT ACTIVATED DIRECTIONAL
CONTROL VALVE - FOR REAR AUXILIARY -
NORMALLY OPEN ("D2" and "P2")
FILTER - DIVERTER VALVE (SCREEN)
INTEGRATED IN SOLENOID
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE - TO ACTIVATE REAR
AUXILIARY ("SV1")
PILOT ACTIVATED DIRECTIONAL CONTROL
VALVE - FOR REAR AUXILIARY - NORMALLY
CLOSED ("P1" and "F1")
59
PILOT ACTIVATED DIRECTIONAL
CONTROL VALVE - TWO SPEED
DRIVE MOTOR
60
PUMP SERVO
FILTER - CASE DRAIN (Attachment)
61
HYDRAULIC STEERING PUMP - Gear Type
13.0 GPM (49,2 L/min.) at High Engine Idle
62
FILTER - STEERING (10 MICRON)
63
SOLENOID ACTIVATED
PROPORTIONAL FLOW CONTROL
VALVE - STEERING
64
SOLENOID ACTIVATED PRESSURE
CONTROL VALVE
0-2000 PSI (0-138 Bar)
65
STEERING CYLINDER
66
CHECK VALVE - 270 PSI (18,6 BaR)
67 PRESSURE CONTROL PILOT
VALVE - 2 COILS
0 - 0.085 Ampere
68
DISPLACEMENT CONTROL SPOOL
69
FRONT AUXILIARY MANUAL
PRESSURE BLEED-OFF VALVE
HYDRAULIC/HYDROSTATIC SCHEMATIC
A300 (S/N 521111001 - 521111292)
(PRINTED MAY 2004)
V-0144legend
LEGEND
2 of 2
Dealer Copy -- Not for Resale