a300 Hydraulic Schematic v-0306legend-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: 5221 PSI (360 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
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
53
14
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE - BICS CONTROL
29
CHARGE PUMP
11.1 GPM (42,0 Lpm) @ High Engine Idle
30
HYDRAULIC PUMP . . . . . . . . . Gear Type
20.7 GPM (78,4 Lpm) @ High Engine Idle
31
DRIVE MOTOR SHUTTLE VALVE
32
SHUTTLE RELIEF VALVE: 200 PSI (13,8 Bar)
33
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE - BASE
LOAD SHUTTLE VALVE - BLEED OFF
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE - ROD
(For S/M P/N 6901932)
HYDRAULIC/HYDROSTATIC SCHEMATIC
WITH TWO SPEED VALVE
A300 (S/N 523411001 - 523411003)
(S/N 523511001 AND ABOVE)
LEGEND
(PRINTED JUNE 2004)
V-0306
1 of 2
Dealer Copy -- Not for Resale
36
37
38
39
40
50
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
41
CHECK VALVE - BICS CONTROL VALVE
42
LIFT ARM BY-PASS RESTRICTOR
43
44
45
VARIABLE CAPACITY DISPLACEMENT
BIDIRECTIONAL HYDROSTATIC PUMP
46
RELIEF VALVE - 2000 PSI (138 Bar)
47
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE (TWO COIL)
48
RELIEF VALVE - 1200 PSI (83 Bar)
49
CHECK VALVE WITH 80 PSI (5,5 Bar)
SPRING
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE - MAKE-UP
PUSH BUTTON SOLENOID ACTIVATED
DIRECTIONAL CONTROL VALVE -
BRAKE
58
FILTER (BRAKE)
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE (TWO COIL)
PILOT ACTIVATED DIRECTIONAL
CONTROL VALVE - FOR REAR AUXILIARY
ORIFICE WITH 0.140 (3,6 mm) RESTRICTION
RELIEF VALVE - 3300 PSI (228 Bar)
ORIFICE WITH 0.031 (0,79 mm)
RESTRICTION
59
PILOT ACTIVATED DIRECTIONAL
CONTROL VALVE - TWO SPEED
DRIVE MOTOR
60
PUMP SERVO
FILTER - CASE DRAIN (Attachment)
61
HYDRAULIC STEERING PUMP - Gear Type
13.6 GPM (51,5 Lpm) @ High Engine Idle
62
FILTER - STEERING (10 MICRON)
63
SOLENOID ACTIVATED
PROPORTIONAL FLOW CONTROL
VALVE - STEERING
64
SOLENOID ACTIVATED PRESSURE
CONTROL VALVE
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
FRONT AUXILIARY MANUAL
PRESSURE BLEED-OFF VALVE
69
70
ORIFICE WITH 0.025 (0,64 mm) RESTRICTION
V-0306 (6/15/04)
CHECK VALVE - WITH 300 PSI Spring and with:
0.030 inch (0,76 mm) ORIFICE
(S/N 523411001 - 523411153)
(S/N 523511001 & Above)
0.016 inch (0,40 mm) ORIFICE
(S/N 523411154 & Above)
RESTRICTION:
0.120 inch (3,05 mm)
(S/N 523411001 - 523411153)
(S/N 523511001 & Above)
0.089 inch (2,26 mm)
(S/N 523411154 & Above)
HYDRAULIC/HYDROSTATIC SCHEMATIC
WITH TWO SPEED VALVE
A300 (S/N 523411001 - 523411003)
(S/N 523511001 AND ABOVE)
LEGEND
(PRINTED JUNE 2004)
V-0306
2 of 2
Dealer Copy -- Not for Resale