KENR8227-05 November 2020
FLUID POWER SYMBOLS BASIC COMPONENT SYMBOLS MAIN
PUMP OR MOTOR
FLUID CONDITIONER
SPRING
CONTROL VALVES
VARIABILITY
SPRING (ADJUSTABLE)
LINE RESTRICTION (VARIABLE)
PRESSURE COMPENSATION
34
Accumulator Gp - Brake
E-3 C-2, F-2
2
Brake Gp - Service And Parking (Rear)
B-8, F-8
3
Tap Number
5
Core Gp - Oil Cooler
D-7
7
Left Brake Pressure
Core Gp - Oil Cooler (Brk, Hyd. Fan, Steer.)
D-2
8
Cylinder Gp - Hoist
B-5
9
Drive Gp - Pump
B-5
10
Filter And Mtg Gp - Hyd. (Brk Oil Clr Lines) Filter Gp - Oil (Parking, Service Brakes)
D-1 C-5
12
Fitting Orifice
D-3
13
Motor Gp - Piston
A-2
14
Pump And Motor Gp - Brake Release (Parking, Secondary)
C-2
15
797B Off-Highway Truck Hydraulic System
A-4
16
JSM220-UP
B-5
17
A-3
18
Pump Gp - Piston (Brake Cooling Motor Drive)
A-5
19
E-7
Pump Gp - Piston (Hyd Fan And Steer)
A-5
20
B
Right Brake Pressure
E-6
Screen As - (Brk Cooling Lines)
A-2
21
C
Brake Manifold Pressure
D-6
Screen As - (Hyd Tank)
C-3
22
D
Hoist Pump Supply Pressure
B-4
Screen Gp - Hydraulic (Hoist)
B-4
23
E
Hoist Pump Supply Pressure
B-4
Sensor Gp - Pressure (Brake Accum)
D-3 C-4
24
Slack Adjuster Gp - (Rear/Front)
26 27
Switch Gp - Pressure (Parking Brake)
E-5 D-4
Tank Gp - Hydraulic
B-4
29
Valve And Mtg Gp - Brake
D-6
30
Valve And Mtg Gp - Brake
F-3
31
D-1, D-8
32
B-8
33
Valve Gp - Brake Control (Service) Valve Gp - Control (Hoist And Brake Cooling) Valve Gp - Diverter (Rear Brake Oil Cooling) Valve Gp - Relay (Service/Parking Brake) Valve Gp - Relief (Brake Oil Cooling) Valve Gp - Traction Control
E-6
34 35 36
F-7
37
FOUR - WAY
P T BASIC SYMBOL
INFINITE POSITION
PRESSURIZED
SPRING LOADED
RETURN ABOVE FLUID LEVEL
SHUTTLE
PILOT CONTROLLED
RETURN BELOW FLUID LEVEL
MEASUREMENT
PRESSURE
ROTATING SHAFTS
TEMPERATURE
FLOW
UNIDIRECTIONAL
BIDIRECTIONAL
COMBINATION CONTROLS
SOLENOID
SOLENOID OR MANUAL
SOLENOID & PILOT
SOLENOID & PILOT OR MANUAL
SERVO
THERMAL
DETENT
MANUAL CONTROL SYMBOLS
PUSH - PULL LEVER
GENERAL MANUAL
MANUAL SHUTOFF
29
PUSH BUTTON
PEDAL
PILOT CONTROL SYMBOLS
RELEASED PRESSURE
28
D-2, E-2 B-3
THREE - WAY
CHECK VALVES
SHIFTED POSITION
VENTED
25
E-2, F-7
Switch As - Pressure (Brake System)
TWO - WAY
FLUID STORAGE RESERVOIRS
11
Pump Gp - Gear (Brake Cooling)
Sensor Gp - Pressure (Brake Accum)
THREE POSITION
6
Pump Gp - Gear
ATTACHMENT
SPRING
REMOTE SUPPLY PRESSURE
11 EXTERNAL RETURN
INTERNAL RETURN
SPRING LOADED
GAS CHARGED
LINES CROSSING
FIXED DISPLACEMENT
VARIABLE DISPLACEMENT NON-COMPENSATED
BIDIRECTIONAL
BIDIRECTIONAL
DOUBLE ACTING
INTERNAL PASSAGEWAYS
VARIABLE DISPLACEMENT NON-COMPENSATED
UNIDIRECTIONAL
Volume 1 of 4: Brakes, Brake Cooling, and Hoist Circuits
SINGLE ACTING
LINES JOINING
UNIDIRECTIONAL
INTERNAL SUPPLY PRESSURE
HYDRAULIC & PNEUMATIC CYLINDERS
HYDRAULIC MOTORS
HYDRAULIC PUMPS FIXED DISPLACEMENT
COMPLETE
CROSSING & JOINING LINES
ACCUMULATORS
COOLING COMPONENTS
SIMPLIFIED
INFINITE POSITIONING
3 POSITION
FLOW IN ONE DIRECTION
PARALLEL FLOW
CROSS FLOW
2 POSITION
FLOW IN EITHER DIRECTION
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25
A B
32
ELECTRICAL SYMBOLS TABLE
26
15 13
12
37
26
HYDRAULIC SYMBOLS (ELECTRICAL)
G
M
TRANSDUCER (FLUID)
TRANSDUCER (GAS / AIR)
GENERATOR
ELECTRIC MOTOR
PRESSURE SWITCH
PRESSURE SWITCH (ADJUSTABLE)
TEMPERATURE SWITCH
ELECTRICAL WIRE
9 23
26
37 A
B
1
30 C
26
12 WIRE NUMBER IDENTIFICATION CODES
ELECTRICAL SCHEMATIC EXAMPLE
HYDRAULIC SCHEMATIC EXAMPLE
CURRENT STANDARD
CURRENT STANDARD
HARNESS IDENTIFICATION CODE THIS EXAMPLE INDICATES WIRE 135 IN HARNESS “AG” WIRE WIRE COLOR CIRCUIT NUMBER IDENTIFICATION
325-AG135 PK-14
CIRCUIT NUMBER IDENTIFICATION
WIRE COLOR
WIRE GAUGE* *Wire gauge is shown in AWG (American Wire Gauge) but could also be shown in metric denoted with mm
325-PK
PREVIOUS STANDARD WIRE
27
5
31
6
2
11
8
10
D 17 20
7
29 19 18 14
E 23
11
4
20 8
36 14
19
1 30 C
33
34
22 21
16 2
9
CIRCUIT NUMBER IDENTIFICATION
21 36 4
9
3
15
D
33
E
18 19 17
33
29
16 15
HOIST COMPONENTS
26 32 33 26 32 13 28 37 A 35 3
27 31
6
5
2
11 10
7
23
D 17 E
34
9
12
30
25
C
COMPONENT LOCATIONS
24
1
B
325-PK-14
24 35
18 22 29
WIRE COLOR
3
B
BRAKE COMPONENT
WIRE GAUGE* *Wire gauge is shown in AWG (American Wire Gauge) but could also be shown in metric denoted with mm
A
(EXAMPLE VALVE)
(Dimensions: 39 inches x 28 inches)
4
28
30 Page,
20
32
KENR8227-05 VOL 1 of 4
A
Schematic Location
Description
P T
F-3 F-5
Brake And Rax Brake, Rax Lube And Rax Fan
LINE RESTRICTION (VARIABLE & PRESSURE COMPENSATED)
A B
NORMAL POSITION
Control Gp - Foot Brake (Service)
Pump Gp
PUMP (VARIABLE & PRESSURE COMPENSATED)
VALVE PORTS
CONTROL VALVES
4
Control Gp - Foot Brake (Secondary)
TWO POSITION
AB
C-3, A-3
Breather
Tap Location - Volume 1 Pressure and Sampling
ONE POSITION
1
Brake Gp - Service And Parking (Front)
HYDRAULIC PNEUMATIC ENERGY TRIANGLES
PUMP (2 - SECTION)
11
7
Schematic Machine Location Location
Description
LINE RESTRICTION (FIXED)
VALVES
VALVE ENVELOPES
Component Location - Volume 1
RESTRICTION
AUX