KENR7657-01 February 2010
FLUID POWER SYMBOLS
COMPONENT LOCATIONS NAME
BASIC COMPONENT SYMBOLS
PART NUMBER
SCHEMATIC LOCATION
MACHINE LOCATION
PUMP - GP.
296-6714
B-3
1
HYDRAULIC TANK
297-1233
A-3
2
TANK GP.
297-1232
A-3
3
COOLER
214-2202
C-1
4
FILTER
210-6243
C-1
5
HMU
247-7868
B-4
6
CYLINDER - FRONT STEER
214-5097
A-4
7
CYLINDER - LIFT
215-7298
B-8
8
CYLINDER - TILT
206-3553
B-8
9
CYLINDER - MP BUCKET OPTION
A-8
10 11A
F-6
11B
CYLINDER - BOOM
246-9885
F-4
12
CYLINDER - STICK
210-7077
F-2
13
CYLINDER - SWING
269-0381
F-3
14
CYLINDER - BUCKET
210-7085
F-3
15
F-1
16
VALVE - RIDE CONTROL (OPT)
245-8780
C-8
19
ACCUMULATOR - RIDE CONTROL (OPT)
162-3960
D-8
20
SWITCH - RIDE CONTROL PRESSURE (OPT)
304-5696
C-8
21
8J-6875
D-7
34
VALVE - SHUTTLE
TWO-WAY
CHECK VALVES
P T SHIFTED POSITION
P T NORMAL POSITION
INFINITE POSITION
VENTED
416E Backhoe Loader Hydraulic System
PILOT CONTROLLED
RETURN ABOVE FLUID LEVEL
PRESSURIZED
RETURN BELOW FLUID LEVEL
MEASUREMENT
PRESSURE
ROTATING SHAFTS
FLOW
TEMPERATURE
UNIDIRECTIONAL
BIDIRECTIONAL
COMBINATION CONTROLS
BWC1-UP
2 BANK
248-0481
D-6
27
3 BANK (SHOWN ON SCHEMATIC)
248-0482
D-6
27
INLET MANIFOLD
259-6745
C-6
27A
LIFT SECTION
259-6732
C-6
27B
TILT SECTION
259-6731
B-6
27C
AUXILIARY (AUX) SECTION
259-6729
A-6
27D
SOLENOID or MANUAL
SOLENOID
6 BANK
248-0483
F-7
29
7 BANK
248-0484
F-7
29
8 BANK (SHOWN ON SCHEMATIC)
248-0485
F-7
29
259-6739
D-4
29A
SWING SECTION
259-6738
D-3
29B
BUCKET SECTION
259-6737
D-2
29C
MANUAL SHUTOFF
PUSH-PULL LEVER
EXTERNAL RETURN
STICK SECTION
259-6736
D-2
29D
E-STICK SECTION
259-6734
D-1
29E
STABILIZER SECTION x 2 (Left and Right)
259-6746
D-7
29F
AUXILIARY (AUX) SECTION
259-6733
D-5
29G
INLET MANIFOLD
259-6742
D-5
29J
DETENT
THERMAL
MANUAL CONTROL SYMBOLS
GENERAL MANUAL
PUSH BUTTON
PILOT CONTROL SYMBOLS
RELEASED PRESSURE
BOOM SECTION
SERVO
SOLENOID and PILOT or MANUAL
SOLENOID and PILOT
BACKHOE VALVE (29)
INTERNAL RETURN
SIMPLIFIED
ACCUMULATORS
SPRING LOADED
CROSSING AND JOINING LINES
LINES CROSSING
GAS CHARGED
VARIABLE DISPLACEMENT NON-COMPENSATED
FIXED DISPLACEMENT
SINGLE ACTING
BIDIRECTIONAL
BIDIRECTIONAL
DOUBLE ACTING
INTERNAL PASSAGEWAYS
VARIABLE DISPLACEMENT NON-COMPENSATED
UNIDIRECTIONAL
INTERNAL SUPPLY PRESSURE
HYDRAULIC AND PNEUMATIC CYLINDERS
LINES JOINING
UNIDIRECTIONAL
SPRING
COMPLETE
HYDRAULIC MOTORS
HYDRAULIC PUMPS FIXED DISPLACEMENT
PEDAL
REMOTE SUPPLY PRESSURE
FLOW IN ONE DIRECTION
TWO POSITION
THREE POSITION
INFINITE POSITIONING
TAP LOCATIONS
PARALLEL FLOW
CROSS FLOW
FLOW ALLOWED IN EITHER DIRECTION
Description Pump Discharge Load Sense Oil Sampling
17 5
2
21 20 19
9
8
10
4
7
Electrical Symbols Table Hydraulic Symbols (Electrical) The hydraulic oil filter is located below the machine at the left frame rail. The hydraulic oil filter bypass switch is mounted to the oil filter base.
G Transducer (Fluid)
A
B
C
D
E
Transducer (Gas / Air)
11B
29
34
1
6
Pressure Switch (Adjustable)
10
9
8
Electric Motor
J Pressure Switch
12 14
Generator
G
F
H 13
M
SOS
Electrical Wire
Temperature Switch
Pressure Switch
Electrical Symbols (Electrical)
HYDRAULIC OIL FILTER 16 15
1
13
2
9
5
4 T
Pressure Symbol
Temperature Symbol
Level Symbol
Flow Symbol
Wire Number Identification Codes
Electrical Schematic Example
SOS
K
Implement and Steering Pump
Hydraulic Schematic Example Current Standard
Current Standard Harness identification code This example indicates wire 135 in harness "AG".
Hydraulic Oil Filter
Wire Circuit Number Identification
12
14 11B 11A
29
34
17 5
21 20 19
6
8
7
325-AG135 PK-14
(A) Extendable Stick Control Valve (B) Stick Control Valve (C) Bucket Control Valve (D) Swing Control Valve (E) Boom Control Valve (F) Auxiliary Control Valve (G) Middle Inlet Manifold (H) Left Stabilizer Control Valve (J) Right Stabilizer Control Valve (K) Solenoid for the Sideshift Lock
10
NOTE: Alpha numeric numbers are represented by the number only on the machine views.
325-PK Circuit Identification Number
Implement and Steering Pump
Wire Gauge
Wire Color
Wire
325-PK-14 B
E
BACKHOE VALVE
Circuit Number Identification
(EXAMPLE VALVE)
C
A
29
A
Wire Gauge
B
D
The implement and steering pump on the 416E is a similar design and operates the same as the pump on the "A" Series machines. The pump is located below the cab floor plate. The pump control valve is mounted on top of the pump and contains a flow compensator spool and pressure cutoff spool. The implement and steering pump supplies oil flow to the loader valve group, backhoe valve group, and steering system.
Wire Color
Previous Standard
D
COMPONENT LOCATIONS
Wire Color
T2
T2
Hydraulic Oil Filter
SOS
C
A
B B
A F E
T2 F
T1
A C These illustrations show the implement and steering pump out of the machine. The following components are visible:
T1
D
IMPLEMENT / STEERING PUMP
B
The 416E machines are equipped with a mechanically controlled loader valve (A). The loader valve is accessed from below the floor plate. The loader control valve group contains an inlet manifold (B), lift control valve (C), tilt control valve (D), and auxiliary control valve (E, if equipped).
Pressure Cutoff (A), Flow compensator (B), Load sensing pressure tap (T2), Discharge pressure tap (T1), Inlet port (C), Case drain port (D), Hydraulic Oil Tank (E), Outlet port (F)
1
LOADER VALVE
27
Travel at high speeds over rough terrain causes bucket movement. The optional Ride Control System acts as a shock absorber by absorbing bucket forces, which stabilize the machine. The Ride Control System components include; ride control relay (A), ride control solenoids (B), ride control accumulator (C), and ride control pressure switch (D). Two solenoids are now used on the "E" Series machines Ride Control System.
D C
RIDE CONTROL
19
(Dimensions: 34 inches x 28 inches)
11A
The 416E is equipped with a mechanically controlled backhoe valve that is visible with the floor plate at the rear of the cab removed.
24 Page,
14
Printed in U.S.A.
© 2010 Caterpillar All Rights Reserved
KENR7657-01
T1 T2 SOS
16 15
SHUTTLE
SPRING LOADED
BASIC SYMBOL
FLUID STORAGE RESERVOIRS
LOADER VALVE (27)
Tap
FOUR-WAY
THREE-WAY
AB
AB
F-7
ATTACHMENT
LINE RESTRICTION VARIABLE and PRESSURE COMPENSATED
VALVE PORTS
CONTROL VALVES
185-1839
210-7097
HYDRAULIC PNEUMATIC ENERGY TRIANGLES
THREE POSITION
PUMP: VARIABLE and PRESSURE COMPENSATED
2-SECTION PUMP
VALVES
TWO POSITION
ONE POSITION
LINE RESTRICTION (FIXED)
RESTRICTION
PRESSURE COMPENSATION
LINE RESTRICTION (VARIABLE)
SPRING (ADJUSTABLE)
VALVE ENVELOPES
LH: 291-2682
CYLINDER - E-STICK
CONTROL VALVES
SPRING
FLUID CONDITIONER
VARIABILITY
RH: 291-2681
CYLINDER - STABILIZER
MAIN AUX.
PUMP or MOTOR