©
1988 Caterpillar
All Rights Reserved
Printed in U.S.A.
Component Location
Component
Schematic
Location
Machine
Location
Component
Schematic
Location
Machine
Location
Alarm-Boom Overload B-3 A Solenoid-Hammer Blow Rate A-2 15
Alarm-Travel C-10 1 Solenoid-Hammer/Travel A-1 16
Alternator E-9 2 Solenoid-Hydraulic B-9 17
Batteries A-8 3 Solenoid-Hydraulic Oil Cooler B-9 18
Breaker-Alternator D-9 4 Solenoid-Start Aid D-9 19
Fuses C-5,C-7,E-7 B Starter D-9 20
Gauge-Coolant Temperature D-4 A Switch-Air Horn E-3 A
Gauge-Fuel Level D-4 A Switch-Beacon E-7 C
Horn-Forward Horn/Air Horn E-2 5 Switch-Blower F-5 C
Lamp-Dome F-7 C Switch-Boom Overload A-3 21
Lamp-Engine Compartment B-9 6 Switch-Coolant Temperature E-9 22
Lighter-Cigar E-7 C Switch-Disconnect A-8 23
Meter-Service E-5 A Switch-Engine Compartment Lamp B-9 24
Motor-Blower F-6 C Switch-Engine Oil Pressure D-9 25
Motor-Fan D-7 C Switch-Fan D-7 C
Motor-Lower Wiper D-3 C Switch-Hammer D-6 C
Motor-Upper Wiper E-3 C Switch-Hammer Blow Rate E-6 A
Motor-Washer C-7 C Switch-Hammer/Travel E-6 A
Pump-Air (Forward Horn) A-7 7 Switch-Head Lamp E-3 A
Pump-Refueling F-9 8 Switch-Hydraulic Oil D-9 26
Radio F-7 C Switch-Hydraulic Oil Cooler Control A-9 27
Relay-Air Horn B-3 B Switch-Key D-5 A
Relay-Hammer/Travel F-4 B Switch-Left Armrest Interlock F-5 28
Relay-Start E-9 4 Switch-Left Auxiliary Hydraulic F-5 29
Relay-Start/Stop C-3 C Switch-Lower Windshield Disconnect D-3 C
Resistor-Blower Speed F-6 C Switch-Refueling F-9 30
Sender-Air Filter C-9 9 Switch-Right Auxiliary Hydraulic F-5 31
Sender-Coolant Temperature E-9 10 Switch-Start Aid D-5 A
Sender-Fuel F-9 11 Switch-Travel Alarm A-4 32
Solenoid-Boom Lock A-2 12 Switch-Upper Wiper Disconnect D-3 C
Solenoid-Engine Start Stop E-10 13 Switch-Flood Lamps D-6 A
Solenoid-Hammer A-2 14 Switch-Wipers D-7 C
A - COMPONENTS ON INSTRUMENT PANEL
B - COMPONENTS INSIDE INSTRUMENT PANEL
C - COMPONENTS INSIDE CAB
Connector IDENT.
Harness And/Or
Components
Schematic
Location
6 Contacts A-8U1525, WWW-5W9667 E-7
4 Contacts
AAAA-5W4457, SSSS-5W4673
Blower Motor/Blower Switch
F-6
1
2
3
4
5
6
8
9
10
11
12
14
15
13
16
1
2
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
7
3
C24365P1
1
2
3
4
5
6
8
9
10
14
12
11
15
13
16
1
2
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
7
C24337P1
SENR3791
April 1988
213B Excavator
Electrical System
1EJ
1
2
D-9
5W9302EE
CC
5W8899
5W9266
5W9318
5W8918
MMM
JJJ
HHH
GGG
CCC
ZZ
YY
XX
5W8948Q
B-2,E-4,F-2
UU E-25W8945
SS
YL
XXX
TO FRAME
TO CAB
0
L1
L46
L46
GY
L40
L39
L45
L16
RD/YL
LOWER WIPER
CIGAR LIGHTER
5W9628
BR-12
RD CIGAR LIGHTER
RADIO
5W8933
GGG
6
3
5
4
2
1
2
6
5
4
3
L42
1
-10
-10
-10
-10
-10
-10
-10
-10
-10
-10
Z
-10
JJJ
HHH
TO FRAME
L40
L39
L45
L41
L43
L43
L41
L29
X
X
L39
L28
BR
GY
GRD
SEND
IGN
L28
L33
L39
30
L46
L34
RD/YL
GY(1)
L31
L33
L34
L33
L31
L29
L15
L12
L16
L2
L27
L18
BU-12BU-12
RD(4)-14
L28
L34
L41
58
56B
56A
L41
L43
L42
TO CAB
5W9736
UPPER
WIPER
MOTOR
UPPER WINDSHIELD
DISCONNECT SW
5W9751
LOWER WIPER
MOTOR
5W9741
5W9751
LOWER WINDSHIELD
DISCONNECT SW
-
MMM
L2
RD-14
RD(4)-14
RD(4)-14
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
ALL WIRE IS 16 GAGE
E-2
ALL BACKLIGHTING LAMPS ARE 5W2035
UNLESS OTHERWISE SPECIFIED:
BB
A-8
A-8
A-8
5W8944SS
5W8906Z
5W8877X
5W8904U
S
R 5W8903 D-5
TT 5W4457
J
G
E
C
CABLE AS.
AA
WIRE AS.
HARNESS AS.
LOCPART NO.IDENT
COMPONENTS ARE SHOWN INSTALLED ON A FULLY
OPERABLE MACHINE WITH THE KEY AND ENGINE OFF,
AND LEFT ARMREST CONSOLE UP
E
E
F
0
1
1
C
B
A
9 8 7
789
6 5 4
456
1
3 2
F
E
D
1
C
B
A
23
GY(1)
BK/GN/RD(1)
GN/WH
GN/BR(1)
BULB
5W2041
DOME
LAMP AS.
5W9753
TO
CAB
BR
RD
RD
L12
L12
BR
DOME LAMP
BK/YL
FAN
5W9754
BR-14
BK
RD
BR(15)
WH
RD-10
BR(15)
BR(15)
WH
YL
RD-10
MOTOR
TO
CAB
BR
BR
BEACON SW
5W9347
FAN SW
5W9748
LOWER
WIPER SW
5W9746
UPPER
WIPER SW
5W9744
BK/PU
BK/PU FAN
BEACON BK
GY/BK(11)
GY/BK(15)
8A
RD8A
RD8A
RD8A
RD8A
RD8A
RD
BK
WH
YL YL YL
YL
BR
9
10
15
7
5
13
10
9
10
9
5 1
7
5
4
2
BU-12
BU-12
2.5A
ANTENNA
BR
10
9
GROUND
SPEAKER
SPEAKER
ANTENNA
+ BATTERY
L12
L16
CC
BR
TO
ENGINE
TO
FRAME
TO
FRAME
TO
ENGINE
TO
ENGINE
TO
ENGINE
FUEL
REFUELING SW
5W2655
REAR
FLOOD
LAMP
8U1503
-T
BR
RD/YL
FUEL
REFUELING
PUMP
5W8633
FUEL
SENDER
5W9930
BR/BK
RD/YL
BR/BK
BR/WH
BR
ZU
BK-0
BK-8
BU(2)
L39
BK-0
MOTOR
ALT
+
OPERATOR STATION
BR(15)
WH
BK(2)2A
BR-14
L39
L39
L24
GY(5)
BK/YL
RD-10
BK
RD(4)-14
FUEL GAGE
INDICATOR LAMPS
BOOM OVERLOAD
TRAVEL ALARM
TEMP GAGE
FORWARD HORN
HEATER
AIR HORN
LEFT OPTIONAL HYD
RIGHT OPTIONAL HYD
HYD OIL COOLER
FLOOD LAMPS
RD
RD
RD
RD
RD
RD
RD
RD
RD
RD
RD
RD
1
2
3
4
5
6
7
8
9
10
11
12
8A
8A
16A
16A
8A
8A
8A
8A
8A
8A
8A
8A
L18
TO
FRAME
L12
L16
RD-10
L18
L24
L15
BR(5)
HYDRAULIC
OIL SW
5W8554
HYDRAULIC
OIL COOLER
CONTROL SW
5W2687
DD
BBAA
ANTENNA
5W9391
TRAVEL
ALARM
3T1815
BR
AB
BK/GN/RD
GN/BR
BR
BR
GY(5)
BR
BU(2)
-T
-T
BK(2)
BK-0
BK-0 BK-0
NEGPOSNEGPOS
BEACON
5W2686
BK/YL
OPERATOR STATION
MOTOR
BK(11)
GY(11)
GY/BK(13)
BK/GN(12)
BK/WH(12)
BK/PU(12)
RD(5)
RD(6)
HAMMER BLOW
RATE SW
5W9372
FRONT
FLOOD
LAMP SW
5W9347
REAR
FLOOD
LAMP SW
5W9347
PU
RD(3)
WH(3)
BK(3)
RD/YL
GY
GY GY
SERVICE
METER
5W9365
BU(2)
BRBR
- +
BRBR
RD
10
9
51
10
9
51
BK
RD-10
BK-12
RD(2)
BU
RD(3)
GY
BR/WH
BR/BK
FUEL
LEVEL
GAGE
5W9367
BR
AIR FILTER
INDICATOR
ENGINE
OIL PRESS.
INDICATOR
KEY SW
8U0810
58
15
19
17
50A
B
H
M
L
GN/WH
TT
TO
CAB
RESISTOR
5W4672
BLOWER
5W4669
NO
NCC
BLOWER SW
5W5857
LEFT AUX
HYD SW
5W2701
RIGHT AUX
HYD SW
5W2701
BK/GN/RD(1)
GN/BR(1)
BK/GN/RD(1)
GN/BR(1)
GN/WH
BK/GN/RD
GN/BR
BK/GN/RD
GN/BR
BR-14
BK-14
RD-14
BU-14
BK
RD
BU
BR
BR
BK
MOTOR
IGN
SEND
GRD
YL
RD-14
RD(2)
RD(3)
BU
RD(6)
RD(5)
YL
RD(1)
RD(2)
GN/WH
RD-14
RD(3)
BU
GN/BR(1)
BK/GN/RD(1)
GY(5)
RD(6)
RD(5)
TTT
FFF
RD(3)
WH(3)
BK(3)
WH(3)
RD(1)
YL(2)
GN/BU(2)
GN/BU(1)
75
YL(1)
10
9
BR/WH
BR/BK
RD/YL
GY(5)
31B
GN/BR(1)
GY(1)
BK/GN/RD(1)
31
BU(2)
BR(5)
53A 53
GN(1)-14
BBB
RD-10
BU-12
RD(4)-14
DDD
NN
A
A
L18
A
11
29
28
3
26
33
25
34
36
37
RD-10
MM
35
13
14
9
10
2
32
8
6
5
18
30
31
1
12
15
27
17
24
19
23
21
4
20
SSSWWW
WWWA
SSS
RRR
VVV
L24
AJJ
GG
1
7
4
5
2
3
6
A
A
SSS
T
B-35W8889
M
YYY
L
YYY
A
L7
D-6
Y
F-7
A
5W9321
A
MM
A
A
A
E-9
B
FF
G J
L7
A
P
L4
A
A
AAA
DD
A
D-75W9670VVV
D-25W9676UUU
D-75W9675TTT
E-75W9674RRR
D-75W9671QQQ
F-98U0878DDD
F-98U0877BBB
A-28U2593AAA
E-28U0115XXX
1H6936NN
B-9
B-98U2623GG
D-105W8908FF
D-105W8909N
B-35W8916H
A-75W8917F
E-75W9667WWW
D-7,E-7,D-38U0646SSS
D-35W9669PPP
D-15P5624HH
A-68U0818M
A-58U0820L
LAMP SW
5W9346
ENGINE
COMPARTMENT
LAMP
8U2621
GY
BR
N
L5
GY(6)
BK-12
L5
FORWARD
HORN
AIR PUMP
5W9400
YL
RD-14
L5
MMM
YY
CC
T
C
C-7,B-3
RR
J
B-7
RD(1)
B-7
BK/WH
F-7
BK/WH
L3
L3
FUSE
HOLDER A
5W9304
GY
GY
1
2
3
4
5
6
7
8
9
10
11
12
QQ
G
W
W
YC
J
J
G
L3
G
E K
L3
E-6,C-7
BU-12
BU(2)
BK(1)
BR
EE
GY
CCC
CCC
Z
UU
VV
VV
R
RR
J
T
QQ
PP
THIS SCHEMATIC IS FOR THE 213BLC TRACK TYPE
EXCAVATOR (7X1750 CHG 00)
ALL INDICATOR LAMPS ARE 5W9352
A-5
D-35W8887P
C-25W8946PP
C-3,C-58U1018QQ
D-3,C-78U0813RR
F-4,E-68U1335Y
F-4,E-68U1336W
A-38U2594
V
Q
L4
ZZ
VV
C-9
8U1500
8U1501DD
8U1499
8U1498
B-7,C-38U1019T
ALTERNATOR
9W3043
COOLANT
SENDER
8U1516
BU-12
5W8947
GN(1)
VV
5W9267
BK(4)-0
A-2
YL(2)
GN/BU(2)
GN/BU(1)
BR-14
GY(1)
BK(3)-0
C-10
BK(1)-0
L4
8U1339
J
GN(2)-14
8U1979
GN(1)-14
E-9
GN(2)-14
8U1517
BK(2)-0
A-2
E-3,C-7
C-7
GN(1)-14
B-5
RD(1)-10
C-2
RD(1)-10
8U1502
ENGINE OIL
PRESSURE SW
6T1546
BK(1)-0
F-6
BK(2)-0
BU(2)
YL(4)
A-7
BR
BU-18
GY(1)
BK(2)BK(2)
FUSE BLOCK
5W9752
L
BU/YL(2)-14
YL(3)
WASHER
8U2598
YL(4)
HYDRAULIC
OIL COOLER
SOLENOID
8U0190
BU-12
OPTIONAL
HYDRAULIC
SOLENOID
8U0359
12V BATTERY
9G2647
12V BATTERY
9G2647
2
GY
START AID
GY(1)
8U2655
GN/BU(1)
HAMMER/TRAVEL RELAY
HAMMER/TRAVEL SW
8U1525
ENGINE COMPARTMENT LAMP
RD-18
HAMMER BLOW RATE
START/STOP RELAY
SWITCH ILLUMINATION
START/STOP RELAY
CAB SWITCH ILLUMINATION
LEFT LOW BEAM
BU-12
25A
8A
8A
8A
8A
8A
8A
8A
8A
8A
8A
8A
BK(1)
BK(1)
TRAVEL
ALARM SW
9D7032
E-5,F-58U0353
BU/YL(1)-14
YL(5)
GY(6)
GN(1)
GN(1)
GN
GN(1)
D
RD(9)
BK(2)
YL(3)
OPERATOR STATION
GN
GY(6)
BU-12
BK(1)
1
GY(6)
BK(1)
YL(5)
BK-18
BL/YL(1)-14
8U0811
RD(1)-10
ENGINE COMPARTMENT LAMP
GN/BU(3)
GY(6)
BR(3)
START AID
BOOM LOCK
YL(5)
BU/YL(1)-14
GN/WH
GN
RD(9)
GN/BU(5)
GN/BU(4)
RD(10)
RD(11)
14
HAMMER/TRAVEL
RELAY
5W5863
LEFT ARMREST
INTERLOCK SW
5W9346
GN(1)-14
GN(2)-14
BK(4)
BK
RD(5)
YL(3)
RD(10)
WH(3)
PU
RD(10)
GN/BU(4)
16
GN/BU(5)
7
GN/BU(3)
RD(3)
YL(4)
GN/BU(3)
START AID
SW
3T3453
BK/WH
BR
BR
BR
GN(1)
RD(7)
RD(7)
GN
GY
BK
BR
BK
HEAD LAMP
SW
5W9347
BR
BR
BR
BR
BK(4)
GY
BOOM CHECK
SW
5W9347
GY BR
RD(7)
HAMMER
INDICATOR
GY
BR(3)
GN(1)-14
RD-10
RD(1)-10
BK/WH
YL(5)
A
8U2624
YL(3)
RD(9)
GN/BU(4)
RD(9)
QQQ
BR
5 1
TRAVEL
INDICATOR
RD(10)
9
10
GY
U
BR
BR
GN/BU(5)
7
9
10
5 1
HAMMER SW
8U2654
RD(11)
BOOM LOCK
SOLENOID
8U1067
BR(3)
BR
BR
BU(2)
BOOM
OVERLOAD
WARNING
HYDRAULIC
OIL TEMP
INDICATOR
ALTERNATOR
INDICATOR
Q
V
A
HAMMER/TRAVEL
SOLENOID
8U1328
GY
-
SSS
+
FFF
B
B
D
D
YL(4)
C
Y
W
AIR
HORN SW
5W9376
FORWARD HORN/
AIR HORN
5W2658
W
RD(3)
GN/BU(3)
BR(5)
BU(2)
BR
L
M
A
YL(1)
BK(11)
GY(11)
BR(15)
GY/BK(15)
GY/BK(11)
GY/BK(13)
53E
53
HAMMER BLOW RATE
BR(3)
YL(1)
BK/WH
BR-12BR(15)
BK/PU(12)
BK/WH(12)
BK/GN(12)
L28
53A
BR(15)
L34
L33
L39
H
MOTOR
G
RD-10
L16
L15
LL
F
MJGP
RD(8)
DISCONNECT
SWITCH
8U1505
H
MOTOR
AIR FILTER
SENDER
5W9934
BR YL(5)
TO
FRAME
GN/BU(1)
K
JJ
B-6,C-6,D-4
31
53A
31B
53
8U0819
BU/YL(1)-14
A-6,B-5,D-68U0817
BK(4)-0
A-68U0812
BK(3)-0
BU/YL(1)-14
START AID
SOLENOID
8U1093
ALTERNATOR
BREAKER
9S0173
START RELAY
9F3099
B-7
GN(1)
BR(6)
5W8876
BR
COOLANT
TEMP SW
8U1103
T-
F-6
60A
OPERATOR STATION
BR
WH-14
BK-14
HEAD
LAMP AS.
5W5878
WH-14
BK-14
WH(3)
BK(3)
5W4673
BOOM
OVERLOAD
ALARM
5W2663
YL
YL
START/STOP SOLENOID
ZZZ
A
RD(8)
GN/WH(4)-14
RD-14
AIR
HORN
RELAY
5W5883
YL(2)
BR
BR
TO
INSTRUMENT
PANEL
B A
E-5,F-5
BU/YL(2)-14
BU/YL(1)-14
AUX
FLOOD
LAMP GP.
8U1503
BR
BK(12)
L1
G S
MTR
ENGINE
START/STOP
SOLENOID
7T7744
REFUELING PUMP
YL(4)
1
BAT
MOTOR
2
TO
FRAME
FUSE
8A - 5W6394
16A - 5W4968
25A - 5W4969
FUSE
HOLDER B
5W9305
STARTER
8C4774
MOTOR
HAMMER/TRAVEL RELAY
L33
1
LAMP
5W2038
LAMP
5W2038
BR
L34
BU
L34
22
5W7227
BK(1)
L45
L31
TO FRAME
YL
FORWARD
HORN SW
5W2664
10
13
5
T
YL(5)
G
L46
L7
PPP
RD(9)
PPP
GY
SSS
RD(3)-14
TO
FRAME
1
9
ZZZ
X
B
BK(4)
TO
FRAME
GN/WH(4)-14
L45
BR-14
D+
BR
BR(6)
XX
BK(1)
A
B
GY
HAMMER BLOW
RATE
SOLENOID
8U0329
L28
L34
UUU
A
L29
GY(6)
HH
RD(1)
A
L33
S
RD/YL
M
YL(5)
E
RD(8)
H
YL(1)
K
31
30/51
GN/BU(1)
GN/BU(2)
SW NO.2
BOOM
OVERLOAD SW
5W2584
L5
L2
HAMMER/TRAVEL
SW
5W9350
RD(11)
HAMMER
SOLENOID
8U2651
PU
RD(8)
10
9
1
85
TO
SWITCH
BRACKET
BR
5
OPERATOR STATION
WH(3)
START/STOP
RELAY
5W2661
30
85
87
87A
86
RD(7)
7
13
YL(2)
BU
COOLANT
TEMP
GAGE
5W9373
OPERATOR STATION
87
A
YL(2)-12
L27
BR
BR
Q
A
PU
HEAD
LAMP AS.
5W5878
58
56B
56A
BR
RD(1)
2
1
3
FLOOD
LAMP GP.
8U1503
HAMMER/TRAVEL SW
GN/BU(3)
BK/WH
L1
L5
U
GY
RIGHT LOW BEAM GN/BU(2)
BU-12
YL(1)
RD(3)
D29881
