Global 989021, Эксплуатация, техническое обслуживание, список запасных частей

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9-2 BL-GL22-1119 - 11-20-2019
9-2. HYDRAULIC PUMP, MOTOR AND RESERVOIR
ASSEMBLY
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
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. Engage the emergency stop switch (and turn off
key switch.
3. Remove the compartment covers as described in
paragraph
5-3.
4. Tag and disconnect electrical leads from motor
and solenoid of pump/motor assembly.
NOTE: The reservoir and hose will be filled with
hydraulic oil. Place a container under the
pump assembly to catch any hydraulic oil.
5. Disconnect hose from pump/motor assembly.
6. While supporting pump/motor assembly, remove
four screws and four lock washers.
7. Remove the pump/motor assembly.
9-2.2. Disassembly and Reassembly
1. Remove the hydraulic pump/motor assembly as
described in paragraph
9-2.1.
2. Refer to Figure 12-7 for disassembly and reas-
sembly.
9-2.3. Installation
1. While supporting the pump/motor assembly (,
install four screws and four lock washers.
2. Reconnect hose to pump/motor assembly.
3. Connect electrical leads to motor and solenoid of
pump/motor assembly.
4. Fill the hydraulic reservoir. Use hydraulic oil listed
in
Table 3-3 .
5. Disengage the emergency stop switch and turn
on key switch.
6. Operate the lift and lower buttons to refill the
cylinder and lines with hydraulic oil.
7. Check level of hydraulic oil. If required, add
hydraulic oil to bring to proper level. Use hydraulic
oil listed in
Table 3-3 .
8. Install the compartment covers as described in
paragraph
5-3.
9-3. LIFT CYLINDER
9-3.1. Removal
1. With the lift truck wheels securely blocked, raise
the forks approximately three feet from floor and
position blocks or strong supports under the lift
carriage.
2. Lower lift carriage onto the support. Check that
arrangement is secure before proceeding.
3. Engage the emergency stop switch and turn off
key switch.
WARNING: Before attempting any replacement,
make certain power is disconnected.
CAUTION: Hydraulic oil can damage parts. Wipe off
any oil immediately. Provide a container
under the line or fitting before discon-
necting.
4. Remove the compartment covers as described in
paragraph
5-3.
5. Remove the windshield as described in paragraph
5-4.
6. Remove the lift chain as described in paragraph
8-4.
7. Disconnect the hose from the top of lift cylinder.
8. Disconnect the hose from the bottom of lift cylin-
der and remove connector and seal.
9. Manually push the cylinder rod down as far as
possible.
10. Remove screw, lock washer, flat washer and ram
head from cylinder.
WARNING: Support lift cylinder before performing
the following steps to prevent cylinder
from falling.
11. Remove two bolts, two lock washers, two flat
washers and clip.
12. Raise lift cylinder assembly up and out of truck.