SENR5479-01
April 1993
320 FB & 320 LL,
325 FB & 325 LL,
330 FB & 330 LL Forest Swing Machines
Electrical Schematic
325:
8NK1-UP
330:
8FK1-UP
320:
9KK1-UP
©
1993 Caterpillar
All Rights Reserved
Printed in U.S.A.
Component Location
Harness Connector Location
Harness Connector Location
Machine
Location
Component
Schematic
Location
Connectors
Machine
Location
Harness and/or
Components
Schematic
Location
Connectors
Machine
Location
Harness and/or
Components
Schematic
Location
A Diode B-7
A B - 1004379 Not Used D-2
8 Contacts A B-1004379 Not Used D-2
A Diode B-8
A B - 1004379 C - 1004380 D-3
A B - 1004379 C - 1004380 D-3
A Diode F-7
C - 1004380 D-108-2986 C-3
C-1004380 D-1004382 C-3
A Diode F-8
A A - 1003975 B-1004379 C-6
6 Contacts A A -1003975 B-1004379 C-6
1 Fuse A-5
A A - 1003975 B-1004379 E-6
A A - 1003975 B-1004379 E-6
1 Relay - Grapple A-5
4 Contacts * D - 1082986 Grapple Solenoid B-4
4 Contacts * D-1004382 Grapple Solenoid B-4
2 Solenoid - Grapple B-4
Machine locations are repeated for connectors located close together.
3 Solenoid - Rotate CW C-4
* = Connector is located at the component.
3 Solenoid - Rotate CCW C-4
A = Connector is located under platform.
D Switch - Grapple E-5
B Switch - Grapple C-5
D Switch - Horn F-5
B Switch - Low Idle B-5
2 Switch - Pilot Pressure B-4
D Switch - Rotate CW E-5
B Switch - Rotate CCW C-5
Machine locations are repeated for components located close
together.
A = Components under platform.
B = Components on right joystick.
D = Components on left joystick.
8 Contacts
6 Contacts
320
325 & 330
Solenoid Specifications
Part No.
Component Description
Resistance (Ohms)¹
3E8634 Solenoid: Rotate 18.9
¹ At room temperature unless otherwise noted.
Off Machine Switch Specification
Part No.
Function
Actuate
Deactuate
Contact Position
9X3489 Pilot Pressure
293 kPa MAX
(42.5 psi MAX)
230.0 ± 20 kPa
(33.4 ± 3.0 psi)
Normally Open
Machine Harness Connector And Component Locations
A
A
1
1
B
B
D
D
1
1
1
2
2
1
1
3
2
GN
BK
BK
GN
GN
GN
GN
GN
PILOT PRESS SW
9X3489
GRAPPLE SOL
6T8208
10A
C
108-2986
B
D
C
D
C
E
1
B
200 BK
BK-18
BK-18
200 BK
A514 YL
A514 YL
200BK
130 GN
130 GN
A548 OR
200 BK
549 PK
200 BK
200 BK
A551 YL
A549 BU
200 BK
WH-22
GN-22
B786 BU
200BK
310 PU 1
D
3
2
ROTATE CW SOL
3E8634
ROTATE CCW SOL
3E8634
200 BK
B734 GY
549 PK
A548 OR
1
2
3
7
8
6
5
4
A549 BU
A551 YL
148 WH
200 BK
A547 GN
548 GY
A550 BR
2
1
NOT USED
200 BK
200 BK
A514 YL
A544 GN
B734 GY
A543 BU
200 BK
549 PK
548 GY
A550 BR
A551 YL
B734 GY
200 BK
A547 GN
148 WH
A549 BU
A548 OR
LH JUMPER
A
E
A
E
A
PK
GY
WH
WH
BR
YL
578 BU
519 PK
PK - 22
GY - 22
WH - 22
BR - 22
A547 GN
549 PK
548 GY
148 WH
A550 BR
A551 YL
200 BK
A545 BR
DIODE AS.
2V9473
DIODE AS.
2V9473
YL - 22
B
D
A545 BR
5
4
1
2
3
6
HYD PRESS SW
A546 PU
D
ATCH AUX
HIGH SPEED
SAW SW
TERMINALS
NOT USED
A514 YL
200 BK
320 OR
GN - 22
YL-22
BR-22
WH-22
5
4
1
3
2
A544 GN
A546 PU
1
1
2
3
1
4
2
HORN
9U3537
SWITCH
SWITCH
SWITCH
6
1
5
2
GRAPPLE RELAY
7Y5490
3
4
A543 BU
A514 YL
200 BK
B734 GY
549 PK
A548 OR
A549 BU
A551 YL
148 WH
200 BK
A547 GN
548 GY
A550 BR
A545 BR
A544 GN
A546 PU
A543 BU
A514 YL
L3
GY-22
L3
L2
C
B
L2
2
6
A545 BR
WH - 22
GY
SAW SW.
8T8828
A546 PU
148 WH
A548 0R
A549 BU PK-22
7
8
1
2
3
7
8
6
5
4
6
1
5
2
3
4
7
8
WH
PK
D
D
D
D
A543 BU
A544 GN
A547 GN
C
B
200 BK
DIODE AS.
2V9473
A
L1
B
100-3975
COMPONENTS ARE SHOWN INSTALLED ON A FULLY
OPERABLE MACHINE WITH THE KEY AND ENGINE OFF
LOG LOADER
IDENT PART NO.
L1
HARNESS AS.
UNLESS OTHERWISE SPECIFIED: ALL WIRES ARE 16 GAGE
CIRCUIT GROUPING
DESIGNATION
#L
ATCH WIRE, CABLE,
COMPONENT
CIRCUIT NOT CONNECTED
CIRCUIT CONNECTED
BLUE
GREEN
BU
GN
RD
WH
OR
YL
PK
BK
BLADE, SPADE, RING,
OR SCREW TERMINAL
INTERNAL ELECTRICAL
CONNECTION TO SURFACE
OF COMPONENT
ELECTRICAL CONNECTION
TO VEHICLE STRUCTURE
CONNECTOR
SYMBOL DESCRIPTION
BROWN
PURPLE
GRAY
BLACK
COLORABBREV
PINK
YELLOW
ORANGE
WHITE
RED
BR
PU
GY
A
DIODE AS.
2V9473
5678
A
B
C
D
E
F
8
7 6 5
D
E
F
1234
E
C
B
A
1234
THIS SCHEMATIC (100-7952 CHG 01) IS FOR THE 320, 325, AND 330
9U-3611
F 9U-35379U-3537
9U-3611
100-3975
IDENT PART NO.
HARNESS AS.
320 325 & 330
100-3479
101-3427
100-4382
100-4379
101-3427
9X3438
9X3437
9U2582
320 - 325 - 330 LOG LOADER
320
325
330
LOG LOADER LOG LOADER
4
3
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
GN
GN
GN
GN
GN
GN
GN
GN
SOLENOID VALVE
6T8208
1
2
C
SAW 1
SAW 2
C
200 BK
A547 GN
3
A550 BR
3
2
4
1
ATTCH AUX
HYD PRESS SW
9X3489
10A
150 OR
A543 BU
2
4
200 BK
1
C
9U-3537
B
E
2
1
200 BK
B
150 OR
A544 GN
A514 YL
A514 YL
200 BK
TILT
A514 YL
150 OR
148 WH
200 BK
A543 BU
A544 GN
A514 YL
200 BK
A546 PU
A545 BR
A543 BU
235 BK 2
2
1
D
1
2
200 BK
549 PK
4
3
3
200 BK
A549 BU
4
1
200 BK
A548 OR
A551 YL
200 BK
200 BK
ACCUMULATE
GRAPPLE
GRAPPLE
200 BK
B734 GY
549 PK
A548 OR
1
2
3
7
8
6
5
4
A549 BU
A551 YL
148 WH
200 BK
A547 GN
548 GY
A550 BR
2
1
(CONNECTS TO
200 BK
200 BK
A514 YL
A544 GN
B734 GY
A543 BU
200 BK
549 PK
548 GY
A550 BR
A551 YL
B734 GY
200 BK
A547 GN
148 WH
A549 BU
A548 OR
C
FUEL SENSOR JUMPER
A
E
A
E
A
PK
GY
WH
WH
BR
YL
495 GN
RELAY
7Y5490
PK - 22
GY - 22
WH - 22
BR - 22
A547 GN
549 PK
548 GY
148 WH
A550 BR
A551 YL
200 BK
A545 BR
DIODE AS.
2V9473
DIODE AS.
2V9473
YL - 22
C
B
D
A545 BR
5
4
1
2
3
6
HYD PRESS SW
A546 PU
D
ATCH AUX
A514 YL
4
200 BK
320 OR
GN - 22
YL-22
BR-22
WH-22
5
4
1
3
A514 YL
1
148 WH
BK-18
BK-18
2
A544 GN
A546 PU
3
HORN
9U3537
SWITCH
SWITCH
SWITCH
6
1
5
2
PILOT PRESS SW
9X3489
3
4
C
2
B734 GY
200 BK
ATTCH
STEM
A543 BU
A514 YL
200 BK
GN
L3
GY-22
L3
L2
C
B
L2
2
6
A545 BR
WH - 22
GY
1
BK-18
BK-18
SAW SW.
8T8828
4
A546 PU
148 WH
A548 0R
A549 BU PK-22
7
8
WH
1
5
PK
2
548 GY
C
A543 BU
A544 GN
A547 GN
C
C
C
B
200 BK
DIODE AS.
2V9473
A
L1
B
GN
100-3975
COMPONENTS ARE SHOWN INSTALLED ON A FULLY
OPERABLE MACHINE WITH THE KEY AND ENGINE OFF
HIGH SPEED FELLERBUNCHER
IDENT PART NO.
L1
HARNESS AS.
UNLESS OTHERWISE SPECIFIED: ALL WIRES ARE 16 GAGE
L4
L4
CIRCUIT GROUPING
DESIGNATION
#L
ATCH WIRE, CABLE,
COMPONENT
CIRCUIT NOT CONNECTED
CIRCUIT CONNECTED
BLUE
GREEN
BU
GN
RD
WH
OR
YL
PK
BK
BLADE, SPADE, RING,
OR SCREW TERMINAL
INTERNAL ELECTRICAL
CONNECTION TO SURFACE
OF COMPONENT
ELECTRICAL CONNECTION
TO VEHICLE STRUCTURE
CONNECTOR
SYMBOL DESCRIPTION
BROWN
PURPLE
GRAY
BLACK
COLORABBREV
PINK
YELLOW
ORANGE
WHITE
RED
BR
PU
GY
A
DIODE AS.
2V9473
5678
A
B
C
D
E
F
8
7 6 5
D
E
F
1234
E
C
B
A
1234
D38324
(325 & 330 only)
THIS SCHEMATIC (100-8173 CHG 01) IS FOR THE 320, 325, AND 330
100-4383
100-3975
IDENT PART NO.
HARNESS AS.
320 325 & 330
100-4379
100-4381
9U-3537
100-4379
108-2985
9X3438
9X3437
STD WIRING)
9U2582
Component Location Harness Connector Location
Harness Connector Location
Machine
Location
Component
Schematic
Location
Connectors
Machine
Location
Harness and/or
Components
Schematic
Location
Connectors
Machine
Location
Harness and/or
Components
Schematic
Location
A Diode C-7 B - 1004379 C - 108-2895 D-2
8 Contacts
B - 1004379 C -1004381 D-2
A Diode C-8 B - 1004379 C - 108-2895 D-3
B - 1004379 C -1004381 D-3
A Diode F-7 A A - 1003975 B-1004379 D-6
A -1003975 B -1004379 D-6
A Diode F-8 A A - 1003975 B-1004379 F-6
6 Contacts
A A -1003975 B -1004379 F-6
1 Fuse A-5 C - 108-2985 Accumulate Solenoid C-4
C -1004381 Accumulate Solenoid C-4
1 Relay - Saw A-5
4 Contacts
* C - 108-2985 Accumulate Solenoid C-4
4 Contacts
* C -1004381 Accumulate Solenoid C-4
2 Solenoid - Accumulate C-4
Machine locations are repeated for connectors located close together.
2 Solenoid - Attachment C-4
* = Connector is located at the component.
2 Solenoid - Grapple D-4
A = Connector is located under platform.
2 Solenoid - Saw B-4
2 Solenoid - Tilt C-4
B Switch - Accumulate D-5
2 Switch - Atch Aux Hyd Press D-4
B Switch - Grapple D-5
2 Switch - Pilot Pressure B-4
C Switch - Saw C-6
Machine locations are repeated for components located close
together.
A = Components under platform.
B = Components on right joystick.
D = Components on left joystick.
8 Contacts
6 Contacts
320
325 & 330
Solenoid Specifications
Part No.
Component Description
Resistance (Ohms)¹
6T8208
Solenoids:
Accumulate, Grapple
Saw
Tilt
24.9
¹ At room temperature unless otherwise noted.
Off Machine Switch Specification
Part No.
Function
Actuate
Deactuate
Contact Position
9X3489
Pilot Pressure
293 kPa MAX
(42.5 psi MAX)
230.0 ± 20 kPa
(33.4 ± 3.0 psi)
Normally Open
FELLERBUNCHER FELLERBUNCHER
325 - 330 FELLERBUNCHER
Machine Harness Connector And Component Locations
*
*
*
*
C - 108-2985 Accumulate Solenoid
C - 108-2985 Accumulate Solenoid
C - 108-2985 Accumulate Solenoid
D-4
B-4
C-4
A
*
*
*
*
C -1004381 Accumulate Solenoid
C -1004381 Accumulate Solenoid
C -1004381 Accumulate Solenoid
D-4
B-4
C-4
D Switch - Tilt F-5
C = Components on operators right console.
Attachment Aux Hydraulic Pressure
C32224P2
320 FELLERBUNCHER
A
A
1
1
B
B
C
C
D
D
1
1
2
2
1
1
1
1
A
A
1
1
B
B
C
C
D
D
1
1
2
2
