Wire Number Identificat Identification ion Codes Electrical Schematic Example
Hydraulic Schematic Example Current Standard
Current Standard Harness identification code This example indicates wire 135 in harness "AG".
Wire CircuitNumber Identification
Wire Color
325-AG135 PK-14 325-PK CircuitIdentification Number
Wi re Co Col or
Wi re Gauge
Previous Standard Wire Color
Wire
325-PK-14 A CircuitNumber Identification
Wire Gauge (EXAMPLE VALVE)
1 0 0 3 e 1 g a P 1 6 1 R N E R
9
7
6
4
5
TRAVEL MOTOR (LEFT)
2
3
1
TRAVEL MOTOR (RIGHT)
1
R/G
R/G PG
1 F
SWIN G
F
STICK
MOTOR
BUCKET
CYLINDER
Dr a2
a1
a2
CYLINDER
BOOM
BOOM
CYLINDER
CYLINDER
a1
(Dr)
Ps
Dr
(Dr)
Dr
Ps
T1
1
T1
Cy l
T
Cyl
T
2
( T) ( T )
A
(Pp)
Pp
Pp
A
(Pp)
MU P1
P2
P2
P1
E
E A
B
2
SWIVEL
b L
HR
aR4
AR3
bR3
BR3
AR2
BR2
(IN) dR4
BOOM
STICK
(2)
(1)
D
(L)
bR2
AR1
BR1
(RIGHT)
(R)
2
bR1
dST1
bL1
T
SWING
BL1
TRAVEL
TRAVEL
(L)
(R)
BL2
AL1
(FORWARD)
(FORWARD)
AL2
bL3
AL3
(UP)
ATTCH
BL3
bL4
BL4
AL4
(CLOSE)
aL5D
aL5E
HL
(IN OUT DOWN) ,
,
dL5
BUCKET
BOOM
(1)
D
STICK
(2) BR4
STRAIGHT TRAVEL
R2
R1
X
dL6
C
(OUT) bR4
PB2
PA1
dR8
aR3
(LEFT) Y
dR7
aR2
Psp
aR1
PTA
PL
PR
aL1
PP
PAT
aL2
aL3A
dL9
aL3B
C
(OPEN)
(DOWN)
(REVERSE)
(REVERSE) PSW
aL4
PB1
PA2
PiS
aL3C
1
0 -
0 W 3 B /
TP
TT
JLP
JLT
Pi3
B
B
Pi1 Pi8
Pi5
JPi
C/V
Pi2
PEPU
PIN
PAC JRP
1 e g 1 a
JRT
,
SWING A4
A3
A2
A1
JL2 JL4
R
TRAVEL (L)
P
A1 Pf
JL3
PG
JL1
BUCKET JR4
N
DR4
ST
1 SB5 S B4 S B3 S B2
E
SP
DR6
(SLOW) (TRAVEL)
DR5
DR3
(SWING)
DR2
(PUMP) DR1
SB1
PH a2 a3
a1
A2
(REAR)
(FRONT)
TRAVEL (R)
6
ATTACHMENT COMPONENTS
PSA
STICK
JR2
Item
Description
No
.
BOOM JR3
JR1
(RELIEF)
1
Boom Lowering Control Valve
2
Check Valve
TOUT Pi2
Pi1
R
MAIN CONNECTOR LINE
SA5 S A4 S A3
SA2
SA1
DRAIN LINE Dr
A
B1
DO
DI
B2
A3
A B AND 315B L EXCAVATOR (ATTACHMENT) BOOM LOWERING CONTROL VALVE - PART #: 239-8628 Components are shown installed on a fully operable machine with the key and engine off and transmission shifter in neutral. Attachment Schematic is intended to Hydraulic Schematic in this Service Manual.
