Hydraulic And Electrical Assembly Removal; 9-2.1 Removal; 9-2.2 Installation; Hydraulic Pump, Motor, And - Big Joe E30 Operation, Maintenance And Parts Manual

CAUTION: Hydraulic oil can damage parts. Wipe off
any oil immediately. Provide a container
under the line or fitting before discon-
necting.
4. Refer to Figure 9-2
ting and replace it with a new line or fitting. Check
level of hydraulic oil. With lift carriage fully low-
ered, fill reservoir with hydraulic oil to 1 inch below
opening. Use hydraulic oil listed in
5. Turn on the key switch (20,
emergency disconnect (17).
6. Operate the lift and lower buttons to refill the
cylinder and lines with hydraulic oil.
7. Check level of hydraulic oil. Hydraulic oil must be
1 inch below opening. If required, add hydraulic
oil to bring to proper level. Use hydraulic oil listed
in Table 3-2.
8. Install the upper compartment cover as described
in paragraph 5-2.
9-2. HYDRAULIC AND ELECTRICAL ASSEMBLY
REMOVAL
The hydraulic system and electrical system can be
removed as an assembly to provide additional clear-
ance for various maintenance procedures.
WARNING: When forks are raised, pressure exists in
the hydraulic system lines and fittings. To
ensure release of pressure, forks must
be fully lowered and the batteries discon-
nected before performing any mainte-
nance on the hydraulic system.
9-2.1. Removal
1. Lower forks fully.
2. Turn off the key switch (20,
emergency disconnect (17).
3. Remove the upper compartment cover (5,
9-1) as described in paragraph
4. Remove four screws (1,
(2) and move assembly (8) away from frame (9).
9-2.2. Installation
1. Position assembly (8) on frame (9) and secure
with four screws (1,
(2).
2. Turn on the key switch (20,
emergency disconnect (17).
3. Install the upper compartment cover as described
in paragraph 5-2.
9-2
and remove leaking line or fit-
Table 3-2.
Figure 12-18) and
Figure 12-18) and
5-2.
Figure 9-1), four washers
Figure 9-1), and four washers
Figure 12-18) and
9-3. HYDRAULIC PUMP, MOTOR, AND RESER-
VOIR ASSY
The hydraulic pump/motor assembly can be disas-
sembled and repaired. However, a defective pump,
valve or motor requires replacement of that compo-
nent.
WARNING: When forks are raised, pressure exists in
9-3.1. Removal
1. Lower forks fully.
2. Turn off the key switch (20,
emergency disconnect (17).
3. Remove the hydraulic and electrical assembly (
as described in paragraph
4. Tag and disconnect electrical leads from solenoid
(2, Figure
NOTE: The reservoir and hose will be filled with
hydraulic oil. Place a container under the
pump assembly to catch any hydraulic oil.
5. Remove bolt (7,
disconnect hose (8) pump and motor (9).
6. Remove two screws (1) and remove pump and
motor (9).
9-3.2. Disassembly and Reassembly
1. Remove the hydraulic pump/motor assembly as
described in paragraph
2. Refer to
bly.
9-3.3. Installation
Figure
1. Position pump and motor (9,
bracket and secure with two screws (1).
2. Connect electrical leads to motor (3,
and solenoid (2).
3. Reconnect hose (8,
assembly (9) with two washers (5) and bolt (7).
4. Fill the hydraulic reservoir. Hydraulic oil must be 1
inch below opening. If required, add hydraulic oil
to bring to proper level. Use hydraulic oil listed in
Table 3-2.
5. Turn on the key switch (20,
emergency disconnect (17).
the hydraulic system lines and fittings. To
ensure release of pressure, forks must
be fully lowered and the batteries discon-
nected before performing any mainte-
nance on the hydraulic system.
Figure
9-2.
9-3) and motor (3)
Figure 9-2) and washers (5) and
9-3.1.
Figure 9-3 for disassembly and reassem-
Figure 9-2) to pump/motor
Figure
BL-E30-0515 - 03-01-2018
12-18) and
Figure 9-2) on
Figure 9-3)
12-18) and