b300 Hydraulic Schematic v-0687legend-2

HYDRAULIC/HYDROSTATIC SCHEMATIC
B300 B SERIES (S/N 573111001 AND ABOVE)
(PRINTED MARCH 2005)
V-0687le
HYDRAULIC RESERVOIR
Capacity . . . . . . . 64.5 Qts. (61 L)
19
20
21
22
LEGEND
9
3
8
4
10
11
Printed in U.S.A.
12
15
17
18
7
6
2
1
23
24
25
26
13
14
27
5
SCREEN (Suction)
W/By-Pass . . . . . . . 4 PSI (30 kPa)
HYDRAULIC FILTER ELEMENT
FILTER BY-PASS . . . . . . . 36 PSI (250 kPa)
DIFFERENTIAL PRESSURE SWITCH
Normally Closed
CHARGE BUILD-UP
BREATHER/FILL CAP
OIL COOLER
RELIEF VALVE . . . . . . . 2610 PSI (180 Bar)
PORT RELIEF VALVE
TILT CYLINDER (Rod & Base) 4060 PSI (280 Bar)
PORT RELIEF VALVE
AUXILIARY (Male & Female) 3625 PSI (250 Bar)
PORT RELIEF VALVE
BACKHOE SWING CYLINDER (Rod & Base)
2900 PSI (200 Bar)
SOLENOID ACTIVATED DIRECTIONAL
CONTROL VALVE - Auxiliary Couplers
PORT RELIEF VALVE
BACKHOE BOOM CYLINDER (Base)
2306 PSI (195 Bar)
ORIFICE (Boom Rod) 0.15 inch (3,7 mm)
PORT RELIEF VALVE
BACKHOE ARM CYLINDER (Base)
2306 PSI (195 Bar)
STEERING VALVE - Wheel Alignment
RELIEF/REPLENISHING VALVE - HIGH
PRESSURE . . . . . . . 6600 PSI (455 Bar)
RELIEF VALVE - Charge Pressure
CHARGE PUMP
4.0 GPM (15,4 L/min) at Hi
gh Engine Idle
DRIVE MOTOR SHUTTLE VALVE
28
29
30
31
TOW VALVE
RELIEF VALVE 2538 PSI (175 Bar)
RELIEF VALVE (2) 3480 PSI (240 Bar)
32
SERVO PISTON - Swash Plate
33
ORIFICE - 0.04 inch (1,0 mm)
16
LOAD CHECK VALVE (2)
34
GEAR PUMP
14,65 GPM (55,4 L/min) at Hi
gh Engine Idle
PRIORITY VALVE - Steering
PORT RELIEF VALVE
BACKHOE BOOM CYLINDER (Rod)
3045 PSI (210 Bar)
PORT RELIEF VALVE
BACKHOE BUCKET CYLINDER (Rod)
3480 PSI (240 Bar)
PORT RELIEF VALVE
BACKHOE ARM CYLINDER (Rod)
3045 PSI (210 Bar)
VARIABLE CAPACITY DISPLACEMENT BI-
DIRECTIONAL HYDROSTATIC PUMP
ORIFICE - Swing (Base & Rod) 0.138 inch (3,
5 mm)
1 of 2
Dealer Copy -- Not for Resale
V-0687le (3-3-05)
NOTE: Unless otherwise specified
springs have NO significant
pressure value.
gh Engine Idle
gh Engine Idle
35
BRAKE VALVE - SAPR
Spring Applied - Pressure Release
36
37
DIFFERENTIAL LOCK VALVE
Spring Applied - Pressure Release
SOLENOID ACTIVATED DIRECTIONAL CONTROL
VALVE - SAPR Brake & Differential Lock
HYDRAULIC/HYDROSTATIC SCHEMATIC
B300 B SERIES (S/N 573111001 AND ABOVE)
(PRINTED MARCH 2005)
V-0687le
LEGEND
2 of 2
Dealer Copy -- Not for Resale