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 Color
325-AG135 PK-14
IMPLEMENT SYSTEM
Y1
Wire Circuit Number Identification
18 Y2
Flow Symbol
Level Symbol
325-PK Circuit Identification Number
Wire Color
Wire Gauge
Previous Standard
24
21
J
Wire Color
Wire
325-PK-14 B
DOZER BLADE
STEERING SYSTEM
Circuit Number Identification
A
Wire Gauge (EXAMPLE VALVE)
16 Page
HD
3
RENR3680-01 VOL 1
1
X2
28
29
Electrical Symbols Table
8
7
6
HD
2
4
5
1
MA
2
3
X2
19
K
X1
1
H
LINES GROUP COLOR DESCRIPTIONS STEER PUMP OUTPUT IMPLEMENT PUMP OUTPUT TILT CYLINDER CONTROL CIRCUIT IMPLEMENT PUMP SIGNAL RIPPER TIP CYLINDER CONTROL CIRCUIT SUPPLY LINE DRAIN / RETURN LINE
F
STEERING LOOP CIRCUIT WINCH FREE SPOOL CONTROL CIRCUIT LIFT CYLINDER CONTROL CIRCUIT
F
29
RIPPER LIFT CYLINDER CONTROL CIRCUIT WINCH CONTROL CIRCUIT
20
CONTROL PRESSURE SUPPLIED BY TRANSMISSION
STEERING PILOT CONTROL CIRCUIT
F Y1 PS
HC
MB
E
Y2
G
17
E
E
21
HA
4
28
HB
RIPER TIP
MARGIN
5
26
3
CUT-OFF
J
18 D
D
27
B
A
23 6
RIPPER LIFT
28
22
A
LIFT
16
7
32 24
C
30 TILT
15
DUAL TILT OPTION
8
25
SINGLE TILT OPTION
16 Page, Color 2
RENR3680-01 VOL 1
PILOT SUPPLY
C
14
B
LOWER
RAISE LOWER
RAISE
RIPER LIFT
Pressure Line
TILT LEFT
CP
Pilot / Load Sensing Pressure
TILT RIGHT
8 RAISE 1
RAISE
2
3
4
Drain / Return Lines Component Group
TILT 2
1
TIP
B
LINE PATTERNS
3
4
11
Attachment Air Line
ELEC. DET.
CALLOUTS
TIP/IN
12
TIP/OUT 1
T
S
2
3
T
S
4
1
RIPER TIP
T
S
2
3
T
S
YY
Taps (Pressure, Sampling,Sensor) by letter
52
Components by number
4
10
A
A FLOAT PILOT BOOST SIGNAL
THIS SCHEMATIC IS FOR THE D8R TRACK-TYPE TRACTOR PILOT SUPPLY
PILOT DRAIN
Part #: 163-5975 CHG 06 (RIPPER VERSION) VOLUME 1 OF 2 Components are shown installed on a fully operable machine with the key and engine off and transmission shifter in neutral.
8
7
6
5
4
3
2
1
20
Component Locations (Volume 2) Item Number
Description
Part Number
Schematic Location F-4
1
Pump Gp - Steering / Cooling
139-4151
2
Motor Gp - Steering
159-7162
F-6
3
Pump Gp - Implement
9T-8346
D-3
4
Valve Gp - Dozer & Winch Imp Dozer Only
160-8612 160-5952
D-6
5
Manifold Gp - Inlet & Relief
163-0829
D-6
6
Valve Gp - Dozer Lift Section
160-5953
D-6
7
Valve Gp - Tilt Section
160-5954
C-6 B-6
9
Valve Gp - Winch Section
124-2906
10
Cover - End
169-9119
A-6
11
Valve Gp - Dozer Pilot Control
200-0189
A-3
13
Valve Gp - Winch Pilot Control
160-0766
A-8
14
Valve Gp - Implement Lockout
130-4531
B-8
15
Accumulator - Pilot Circuit
200-0750
B-8
16
Valve Gp - Pressure Reg Manifold
162-0162
C-8
17
Valve Gp - Cooler Bypass
126-0747
E-3
18
Cooler - Hydraulic Oil
153-1271
D-2
19
Filter Gp - Steering Charge
177-6979
F-3
20
Valve Gp - Steering Pilot
9T-8693
F-3
21
Valve Gp - Pressure Control
163-0057
E-6
22
Valve Gp - Quick Drop
109-6942
D-2
23
Cylinder Gp - Lift
6E-1102
D-1
24
Cylinder Gp - Dual Tilt
6E-0397
C-1
25
Cylinder Gp - Single Tilt
6E-1175
B-1
30
Tank Gp - Hydraulic Oil
164-3700
C-3
31
Winch Unit
160-5555
E-8
32
Valve Gp - Dual Tilt
106-9648
C-1
19
1
FLUID POWER SYMBOLS
17
RENR3680-01 August 2005
MAIN AUX.
21
PUMP or MOTOR
2
Description
Schematic Location
HB
Implement Pump Signal Pressure
D-4
F
Charge Pump Discharge Pressure
E-6
G
Case Return
E-6
Filter Outlet Pressure
F-3
HA
H
Implement Pump Discharge At Pump
E-6
HC
Left Steering Loop
E-6
HD
Right Steering Loop
F-6
Hydraulic Oil Cooler Inlet Pressure
D-2
J K
Filter Inlet Pressure (SOS)
F-3
X1
Right Steer Actuator Signal Pressure
F-4
X2
Left Steer Actuator Signal Pressure
F-4
Y1
Left Steer Pilot Signal
E-3
Y2
Right Steer Pilot Signal
E-3
CP
Pilot Oil Supply Pressure Non Tap Location Points Of Reference
B-8
A
Implement Pump Discharge Pressure
D-4
E
Charge Pump Relief Pressure
E-5
Right Steer Loop At Pump
F-5
MA MB
Left Steer Loop At Pump
E-5
PS
Steer Pump Control Supply
E-5
LINE RESTRICTION (FIXED)
RESTRICTION
PUMP: VARIABLE and PRESSURE COMPENSATED
2-SECTION PUMP
HYDRAULIC PNEUMATIC ENERGY TRIANGLES
VALVE ENVELOPES
VALVE PORTS
TWO POSITION
ONE POSITION
TWO-WAY
THREE POSITION
CHECK VALVES
AB
AB
P T SHIFTED POSITION
P T NORMAL POSITION
15 16
INFINITE POSITION
PRESSURE
PILOT CONTROLLED
ROTATING SHAFTS
FLOW
TEMPERATURE
3
UNIDIRECTIONAL
BIDIRECTIONAL
FLUID STORAGE RESERVOIRS
7 9 10 19 30
D8R Track-Type Tractor Hydraulic System
11 20
VENTED
SOLENOID or MANUAL
SOLENOID
DETENT
THERMAL
GENERAL MANUAL
PUSH BUTTON
PEDAL
SPRING
PILOT CONTROL SYMBOLS
32
RELEASED PRESSURE
EXTERNAL RETURN
18
REMOTE SUPPLY PRESSURE
INTERNAL RETURN
SIMPLIFIED
CROSSING AND JOINING LINES
ACCUMULATORS
SPRING LOADED
GAS CHARGED
LINES CROSSING
HYDRAULIC PUMPS FIXED DISPLACEMENT
1 3
SERVO
SOLENOID and PILOT or MANUAL
SOLENOID and PILOT
MANUAL SHUTOFF
PUSH-PULL LEVER
21
RETURN BELOW FLUID LEVEL
MANUAL CONTROL SYMBOLS
4 5 6 7 9 10
RETURN ABOVE FLUID LEVEL
PRESSURIZED
COMBINATION CONTROLS
AKA1-UP 6YZ1-UP
22
2
SHUTTLE
SPRING LOADED
BASIC SYMBOL
MEASUREMENT
30
FOUR-WAY
THREE-WAY
CONTROL VALVES
22
4 5 6
ATTACHMENT
LINE RESTRICTION VARIABLE and PRESSURE COMPENSATED
VALVES
18 13 14
PRESSURE COMPENSATION
LINE RESTRICTION (VARIABLE)
SPRING (ADJUSTABLE)
VARIABILITY
15 16 Tap Number
CONTROL VALVES
SPRING
FLUID CONDITIONER
32
13 14 Tap Locations Pressure, Sampling, and Sensor
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 Color
325-AG135 PK-14
IMPLEMENT SYSTEM
Y1
Wire Circuit Number Identification
18 Y2
Flow Symbol
Level Symbol
325-PK Circuit Identification Number
Wire Color
Wire Gauge
Previous Standard
24
21
J
Wire Color
Wire
325-PK-14 B
DOZER BLADE
STEERING SYSTEM
Circuit Number Identification
A
Wire Gauge (EXAMPLE VALVE)
16 Page
HD
3
RENR3680-01 VOL 2
1
X2
31
Electrical Symbols Table
8
7
6
4
5
1
HD
2
MA
2
3
19
K
X1
X2
1
H
31 F
F
20
LINES GROUP COLOR DESCRIPTIONS STEER PUMP OUTPUT IMPLEMENT PUMP OUTPUT TILT CYLINDER CONTROL CIRCUIT
G X
IMPLEMENT PUMP SIGNAL RIPPER TIP CYLINDER CONTROL CIRCUIT
HC
STEERING LOOP CIRCUIT WINCH FREE SPOOL CONTROL CIRCUIT LIFT CYLINDER CONTROL CIRCUIT RIPPER LIFT CYLINDER CONTROL CIRCUIT WINCH CONTROL CIRCUIT
G
E
SUPPLY LINE DRAIN / RETURN LINE
Y1
F
MB
E
PS
STEERING PILOT CONTROL CIRCUIT
Y2
17
21
E
HA
HB
4
MARGIN
3 J
CUT-OFF
D
18 D
5
B
A
23 22 6
A
LIFT
C
C
30
32 24
16
PILOT SUPPLY
DUAL TILT OPTION
TILT
16 Page, Color 2
RENR3680-01 VOL 2
7
9
15
25
SINGLE TILT OPTION
B
B
LOWER RAISE
14 WINCH
CP
13
FREE SPOOL 1
TILT LEFT TILT RIGHT
10
HAUL IN/PAY OUT 2
3
LINE PATTERNS RAISE
4
TILT 2
1
3
Pressure Line
4
Pilot / Load Sensing Pressure ELEC. DET.
ELEC. DET.
FLOAT PILOT BOOST SIGNAL
Drain / Return Lines
11
Component Group Attachment Air Line
CALLOUTS
PILOT SUPPLY
A 1
T
S
2
3
T
S
4
1
PILOT DRAIN
T
S
3
2
T
S
YY
Taps (Pressure, Sampling,Sensor) by letter
52
Components by number
4
THIS SCHEMATIC IS FOR THE D8R TRACK-TYPE TRACTOR Part #: 163-5975 CHG 06 (WINCH VERSION) VOLUME 2 OF 2 Components are shown installed on a fully operable machine with the key and engine off and transmission shifter in neutral.
