User Manual

KENR8230-01
30 Page, (Dimensions: 39 inches x 28 inches)
LINE PATTERNS
Drain / Return Lines
Component Group
Pilot / Load Sensing Pressure
Pressure Line
Attachment
Air Line
CALLOUTS
Taps (Pressure, Sampling,Sensor) by letter
Components by number
YY
52
DRAIN / RETURN LINE
HYDRAULIC CIRCUIT COLOR DESCRIPTIONS
IMPLEMENT and STEERING PUMP CIRCUIT
SWING CYLINDER CIRCUIT
STEERING CYLINDER CIRCUIT
PILOT OIL CIRCUIT
BUCKET CYLINDER CIRCUIT
STICK CYLINDER CIRCUIT
LOAD SENSE CIRCUIT
SUPPLY LINE
AUXILIARY CIRCUIT (BACKHOE VALVE)
E-STICK CYLINDER CIRCUIT
BOOM CYLINDER CIRCUIT
STABILIZER CYLINDER CIRCUIT
BOOSTED BRAKE OIL CIRCUIT
LIFT CYLINDER CIRCUIT
TILT CYLINDER CIRCUIT
AUXILIARY CIRCUIT (LOADER VALVE)
POWER SHIDESHIFT CYLINDER CIRCUIT
SIDESHIFT LOCK CYLINDER CIRCUIT
THIS SCHEMATIC IS FOR THE 432E, 434E, 442E, and 444E BACKHOE LOADERS
PART #: 268-0120 CHG01 Document #: KENR8230-01
Components are shown installed on a fully operable machine with the key and engine off and transmission shifter in neutral.
Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations.
A
B
C
D
E
F
G
H
I
A
B
C
D
E
F
G
H
I
12 11 10 9 8 7 6 5 4 3 2 1
12 11 10 9 8 7 6 5 4 3 2 1
ITEM NAME 432E 434E
1 PUMP GP.
289-6370
2 HYDRAULIC TANK
246-5286
3 TANK GROUP
245-8777
4 COOLER
HYDRAULIC COOLER
5 FILTER
226-9747
6 HMU
210-6240
7
STEER CYLINDERS
7A FRONT
7B
REAR
8 LIFT CYLINDERS 214-9373
9 TILT CYLINDERS 192-3884
10
MP BUCKET CYLINDER .(OPT)
11
STABILIZER CYLINDERS
11A LH
173-4565
11B RH
173-4565
12 BOOM CYLINDER
268-9049(S)
210-7076
268-9051(S)
246-9884
13 STICK CYLINDER
14 SWING CYLINDER
278-1971
15 BUCKET CYLINDER
210-7085(S)
210-7086
210-7095(S)
210-7096
16 E-STICK CYLINDER (OPT).
210-7097(S) / 210-7089
17
VALVE PILOT
17A VALVE PILOT (SWITCH)
297-4394
17B VALVE PILOT (SWITCH+DETENT)
297-4395
18 ACCUMULATOR
226-0420
19 RIDE CNTRL VALVE (OPT)
245-8780
20 RIDE CNTRL ACCMLTR (OPT)
162-3960
21 RIDE CNTR PRES. SWTCH(OPT)
131-9203
22 TEMP. SENSOR (OPT)
TEMP SENSOR
23 DIFF. PRES. SWITCH (OPT)
134-0404
25 COUPLER VALVE (See Volume 2)
231-2615
26 COUPLER CYLINDER (See Volume 2)
190-3085
27
LOADER VALVE (PL/IT) 3 BANK
LIFT SECTION
308-2157
TILT SECTION
308-2163
27C AUX SECTION
308-2159
27D INLET SECTION
PATTERN SWITCH VALVE
VALVE GP - CUSHION RELIEF (OPT)
32 VALVE GP - PILOT (BACKHOE)
33
VALVE GP - PILOT (LOADER)
267-2760
PRV MANIFOLD
300-4493
PO CHECK VALVE
308-3437
36 CHECK VALVE ADAPTER
165-7948
N/A
269-1083
COMPONENT LIST
24 ALL WHEEL STEER VALVE
442E 444E
249-6710 LH
249-6711 RH
249-6712 LH
249-6713 RH
210-7101 214-9372
268-9049(S)
210-7076
268-9051(S)
246-9884
210-7083(S)
210-7084
210-7093(S)
210-7094
210-7083(S)
210-7084
210-7093(S)
210-7094
256-3089 (OPT) 256-3089 (STD)
210-7085(S)
210-7086
210-7095(S)
210-7096
N/A
300-4491
206-3685
267-2758
N/A
N/A
MP BUCKET CYL.
28
LOADER VALVE (EST) 3 BANK
28 LOADER VALVE (3 BANK)
N/A
28A INLET SECTION
308-2156
293-8702
27A
27B
27 LOADER VALVE (3 BANK)
269-1081
N/A
N/A
28B TILT SECTION
308-2158
N/A
N/A
29
BACKHOE VALVE (SS) 7 BANK
29 BACKHOE VALVE (SS) 7 BANK
293-8701
29A BOOM SECTION
308-2149
29B STICK SECTION
308-2152
29C E-STICK SECTION
308-2153
29D OUTLET SECTION
308-2154
29E INLET MANIFOLD
308-2147
29F STABILIZER SECTION
308-2148
29G SWING SECTION
308-2150
29H BUCKET SECTION
308-2151
30
31
34
35
Tap Description
T1 Pump Discharge
T2 Load Sense
SOS Oil Sampling
TAP LOCATIONS
T3 Pilot Pressure
ITEM
VALVE
P1 LS RELIEF LOADER
P2 LS RELIEF BACKHOE
P3 HMU LS RELIEF
P4 TILT RE
P5 TILT HE
P6 LOADER AUX HE
P7 BUCKET RE & HE
P8 BOOM HE
P9 BOOM RE
P10a STICK HE
P10b STICK RE
P11 SWING RE + HE
P12 E-STICK RE + HE
P13 BACK PRESSURE CHECKVALVE
P14 FILTER BYPASS
P15 COOLER BYPASS
P16 STEERING CYL. RELIEF
P17 REAR WHEEL LINE RELIEF
P18 FLUSHING / MARGIN RELIEF
PR1 PILOT PRESSURE REDUCING
R1 LS DRAIN REGULATOR
PUMP
TANK
6
1
3
2
5
22
23
4
7A
FRONT STEER CYLINDER
LEFT JOYSTICK
RIGHT JOYSTICK
STABILIZER JOYSTICK
32
17B17A
BOOSTED BRAKES (REF)
BS
BT
LEFT
BRAKE
PEDAL
RIGHT
BRAKE
PEDAL
TO REAR AXLE
LEFT WHEEL
BRAKE
TO REAR AXLE
RIGHT WHEEL
BRAKE
32
LOADER JOYSTICK
33
LIFT TILT
T3
T2
T1
9
10
26
25
8
SOS
POWERED SIDESHIFT OPTION
Load Signal Line
To Tan k
From Pump
Backhoe Frame
Sideshift Cylinders
REAR STEER CYLINDER
24
7B
11
12
14
31
15
16
11
a1
a3
a2
a1
a3
a2
T2
P
P2
LS
B1 A1 B2 A2 B3 A3 B4 A4 B5 A5 B6 A6 B7 A7
T
b1 a1 b2 b3 a3 b4 a4 b5 a5 b6 a6 b1 a1
STAB BOOM BUCKETSWING STICK E-STICK STAB
a2
T1
T3
C
BACKHOE
VALVE
13
LOADER VALVE
P
T
DLS
LS
D
LIFT
a1
B1
A1
a2
B2
A2
TILT
AUX
b1
b2
a3
b3
M
A3
B3
STICK SWING
BOOM
BUCKET
LH RH
432E / 442E
2827
28A
27C
27B
27D
27A
28B
28C
P6
P5
P4
P1
P16
P16
P3
P2
P18
P9
P8
P11
P11
P7
P7
P10
P10
P12
P12
P14
P13
P15
R1
29E
29F 29A
29G
29H
29C
29B
30
29F
29
29D
34
18
PR1
35
35
36
21
20
19