Bobcat 320 Mini Excavator Hydraulic Repair & Troubleshooting Schematic (S/N 223811001 – 223812346) 322 (S/N 223511001 – 223514376)

B
A
A
B
B
A
B
A
BLADE
CYLINDER
BOOM
SWING
CYLINDER
ARM
CYLINDER
T1
P1
P2
A
B
RIGHT HAND TRAVEL MOTOR
CENTER
SWIVEL JOINT
322 ONLY
3
1
5
7
8
6
4
3
1A
1B
8B
8A
2
5
7
6
4
CENTER
SWIVEL JOINT
320/320L ONLY
3
1
1
3
10
HYDRAULIC CONTROL VALVE
HYDRAULIC/HYDROSTATIC SCHEMATIC
320/320L (S/N 223811001 - 223812346)
322 (S/N 223511001 - 223514376)
(PRINTED JUNE 2005)
V-0032
12
28
19
1 of 6
Dealer Copy -- Not for Resale
P3
P2
RIGHT HAND
TRAVEL
BOOM SWING
ARM
P1
BUCKET
T1
23
21
HYDRAULIC CONTROL VALVE
16
15
17
18
27
26
19
29
29
2 of 6
Dealer Copy -- Not for Resale
1
4
3
2
1
4
PUMP 1
PUMP 2
PUMP 3
G
PB
T
V1
V2
V3
HYDRAULIC PUMPS
F
PS1
PS2
P
T
RIGHT HAND JOYSTICK
LEFT HAND JOYSTICK
P
9
20
22
MANIFOLD ASSEMBLY
3
5
4
21
27
26
3 of 6
Dealer Copy -- Not for Resale
MALE (RETURN)
FEMALE (PRESSURE)
FRONT
AUXILIARY
HYDRAULICS
A
B
A
B
A
B
B
A
A
B
EXPAND CYL
322 ONLY
SWING MOTOR
T1
BOTTOM
TOP
BOOM
CYLINDER
BUCKET
CYLINDER
P2
P1
LEFT HAND TRAVEL MOTOR
322
ONLY
WORKING CIRCUITS
PILOT CIRCUITS
DRAIN CIRCUITS
COMPONENTS
11
24
8
8
Printed in U.S.A.
4 of 6
Dealer Copy -- Not for Resale
PB
BOOM
LEFT HAND
TRAVEL
AUXILIAR
Y
BLADE
SLEW
T2
L3 ISO
US OPTION
ISO/
STD CONVERTER
(ISO SHOWN)
L1
L3
L
R1 ISO
R
3
I
SO
R
R
3
BACK
FRONT
STD
ISO
13
14
25
5 of 6
Dealer Copy -- Not for Resale
3
2
FILTER WITH BY-PASS
T
P
L
3 ISO
US OPTION
STD CONVERTER
ISO SHOWN
)
L1
I
SO
R
1
R
3
BACK
FRONT
I
S
O
7
6
V-0032 (6-21-05)
2
BREATHER CAP
1
6 of 6
Dealer Copy -- Not for Resale
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