Bobcat 325 Mini Excavator Hydraulic Repair & Troubleshooting Schematic (S/N AAC511001 AND ABOVE) (S/N A9K011001 AND ABOVE) 328 (S/N A9K111001 AND ABOVE)

BOOM
SWING
CYLINDER
BOOM
CYLINDER
BUCKET
CYLINDER
BLADE CYLINDER
T1, T2
P2 P1
V
L.H. TRAVEL MOTOR
R.H. TRAVEL MOTOR
T1, T2 P2 P1
V
CENTER SWIVEL JOINT
E
B
D
C
A
H
F
G
AUX
BOOST
SLEW
BUCKET
ARM
BOOM SWING
RH TRAVEL
BOOM
LH TRAVEL
A
B
A
B
B
A
B
A
A
B
A
B
A
B
A
B
A
B
FEMALE (PRESSURE)
T2
PUMP SUPPLY
WORKING CIRCUITS
PILOT PRESSURE
SYSTEM RETURN LINES
ENCLOSURE
DIRECT TANK RETURN
ARM
CYLINDER
BLADE
DIRECT TO
TANK VALVE
(EXCLUDE FOR
U.S. OPTION)MALE (RETURN)
HYDRAULIC/HYDROSTATIC SCHEMATIC
325 (S/N AAC511001 AND ABOVE)
(S/N A9K011001 AND ABOVE)
328 (S/N A9K111001 AND ABOVE)
(PRINTED MAY 2009)
V-0978
22
33
30
16
15
17
18
13
14
29
19
23
12
5
10
11
34
35
1 of 2
Dealer Copy -- Not for Resale
OIL COOLER
PRESSURIZED BREATHER
1
2
3
4
T
LH JOYSTICK
P
1
2
3
4
T
RH JOYSTICK
P
L
1
I
S
O
L3 ISO
R
1
ISO
US OPTION
ISO/STD CONVERTER
(ISO SHOWN)
L1
L3
R3
I
S
O
R1
R3
BACK
FRONT
S
TD
I
S
O
C
P1
P2
P3
B
A
PSI
V1
V2
V3
TOP
SLEW MOTOR
BOTTOM
BOOST
BUCKET
BOOM SWING
RH TRAVEL
LH TRAVEL
b
a
b
a
T1
b
a
b
a
b
a
B
A
b
a
P1
P2
P3
MAIN FILTER WITH BY-PASS
CASE DRAIN FILTER
WITH BY-PASS
T
T2
G
PB
T1
F
HYDRAULIC PUMP
G1
FRONT
LEFT
RIGHT
REAR
FRONTRIGHT
REAR
LEFT
V-0978 (5/6/09)
2
1
7
6
28
25
9
26
3
4
31
27
20
21
32
22
24
8
8
33
15
18
14
29
A3
A2
A1
S1
34
SLEW LOCK VALVE
(S/N A9K011121 & Above
& S/N A9K111122 & Above ONLY)
J1
J2
A
B
B1
A1
36
2 of 2
Dealer Copy -- Not for Resale
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