Bobcat 335 Mini Excavator Hydraulic Repair & Troubleshooting Schematic S/N A16U11001 – A16U11490

BOOM CYLINDER
BUCKET CYLINDER
ARM CYLINDER
ISO/STD
CONVERTER
(ISO SHOWN)
MAIN FILTER WITH
BY-PASS
OIL COOLER
1
2
3
4
RH JOYSTICK
1
2
3
4
LH JOYSTICK
T
P
T
P
R1
L
3
IS
O
L
3
R1
IS
O
L1 ISO
L1
R3
IS
O
R
3
BACK
FRONT
S
T
D
IS
O
DIRECT TO
TANK VALVE
(OPTIONAL)
CPT
B
A
F C D
E
LS 1
LS 2
OFFSET CYLINDER
SECOND AUXILIARY
(SERVICE KIT ONLY)
LOCKING
VALVE
T
P
TRAVEL JOYSTICK
3
4
1
2
M
P1
AUXILIARY
A
B
A
B
SLEW
A
B
BLADE
TRAVEL L
TRAVEL R
A
B
BUCKET
ARM
A
B
A
B
BOOM
OFFSET
A
B
SLEW MOTOR
HYDRAULIC/HYDROSTATIC SCHEMATIC
335 S/N A16U11001 – A16U11490
(PRINTED MARCH 2007)
V-0847
44
45
51
52
46
46
47
48
49
50
19
31
32
33
18
35
36
34
21
37
34
21
34
21
38
39
40
34
21
41
42
34
21
43
34
21
34
21
34
34
4
3
20
b
a
MALE
(Return)
FEMALE
(Pressure)
A
B
A
B
b
a
b
a
b
a
b
a
b
a
b
a
B
A
1 of 2
Dealer Copy -- Not for Resale
CENTER
SWIVEL
JOINT
CASE DRAIN
FILTER
WITH BY-PASS
RESERVOIR
PRESSURIZED BREATHER
RH BLADE
CYLINDER
LH BLADE
CYLINDER
MAIN FILTER WITH
PASS
T
P
T
P
A
C
D
B
E
H
F
G
R1
O
L1 ISO
3
INTERSECTION OF HYDRAULIC LINES
INDICATED BY JUNCTION DOT
PUMP SUPPLY
WORKING CIRCUITS
PILOT PRESSURE
SYSTEM RETURN LINES
ENCLOSURE
DIRECT TANK RETURN
LOAD SENSE
T
P
X
Mb
Ma
B
A
T
B
A
T
Mb
Ma
X
HYDRAULIC PUMP
TRAVEL MOTOR (2)
V-0847 (3-13-07)
4
3
2
1
5
14
15
17
16
13
11
8
9
6
12
7
11
10
10
11
11
8
9
6
12
7
P
P1
LS
T
HYDRAULIC X-CHANGE
(OPTIONAL)
53
55
54
56
57
B
T1
C
P1
A
P
T2
T
D
B1
G
PWM-1
PWM-2
2-SPD
J-STK
30
22
28
29
27
23
24
25
26
2 of 2
Dealer Copy -- Not for Resale
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